JP6442981B2 - Coil parts - Google Patents

Description

  The present invention relates to a coil component.

  Conventionally, coil components include those described in Japanese Utility Model Publication No. 5-62022 (Patent Document 1). The coil component includes a core having a core part and flanges provided at both ends of the core part, a conductive wire wound around the core part, and an electrode provided on the flange part.

Japanese Utility Model Publication No. 5-62022

  By the way, when the conventional coil component is shunt-connected to the signal line of the substrate and mounted, there is a problem that resonance caused by the conducting wire wound around the winding core portion occurs in a high frequency band. As a result, the signal line signal propagates in the shunt direction, the signal line propagation characteristics deteriorate, and the signal quality deteriorates.

  Accordingly, an object of the present invention is to provide a coil component that can suppress the deterioration of the propagation characteristics of a signal line.

In order to solve the above problems, the coil component of the present invention is:
A core having a core part and a first collar part and a second collar part provided at both ends of the core part;
A conductor provided in the core;
An electrode provided on the first collar and the second collar,
The conducting wire is
A coil-shaped first conductor portion wound around the core portion;
A coil-shaped or meander-shaped second conductor provided in the core;
The inductance value of the second conductor part is different from the inductance value of the first conductor part,
The axis of the second conductor portion is not the same axis as the axis of the first conductor portion, but is a different axis.

  Here, the axis | shaft of a 1st conducting wire part means the center axis | shaft of a coil shape. The axis of the second conductor portion means the center axis of the coil shape when the second conductor portion is coil-shaped, and the meander-shaped center line when the second conductor portion is meander-shaped, that is, the meander-shaped folding width. The direction in which the line connecting the centers of the lines extends. The axis of the second conductor part is not the same axis as the axis of the first conductor part but a different axis means that the axis of the second conductor part does not coincide with the axis of the first conductor part (not concentric), The axis of the second conductor part may be parallel to the axis of the first conductor part, or the axis of the second conductor part may not intersect the axis of the first conductor part, or the axis of the second conductor part The axis may intersect with the axis of the first conductor portion at one point.

  According to the coil component of the present invention, the conducting wire includes the coil-shaped first conducting wire portion wound around the winding core portion, and the coil-shaped or meander-shaped second conducting wire portion provided in the core. The inductance value of the second conductor portion is different from the inductance value of the first conductor portion. The axis of the second conductor part is different from the axis of the first conductor part. Therefore, since the coil-shaped or meander-shaped second conducting wire portion is added, when the coil component is shunt-connected to the signal line of the board and mounted, in the resonance frequency region generated by the first conducting wire portion that is the main coil. Impedance can be increased, and a mode in which a signal propagates in the shunt direction can be suppressed. Therefore, it is possible to suppress the deterioration of signal quality by suppressing the deterioration of the propagation characteristics of the signal line.

Moreover, in the coil component of one embodiment,
The conducting wire has a coil-shaped or meander-shaped third conducting wire portion provided in the core,
The first conductor portion is connected in series between the second conductor portion and the third conductor portion,
The inductance value of the third conductor part is different from the inductance value of the first conductor part,
The axis of the third conductor portion is not the same axis as the axis of the first conductor portion, but is a different axis.

  Here, the axis of the third conductor portion means the center axis of the coil shape when the third conductor portion is coil-shaped, and the meander-shaped center line when the third conductor portion is meander-shaped, that is, the meander shape. This is the direction in which the line segment connecting the centers of the folded widths extends. The axis of the third conductor portion is not the same axis as the axis of the first conductor portion but a different axis means a state where the axis of the third conductor portion does not coincide with the axis of the first conductor portion (not concentric), The axis of the three conductor part may be parallel to the axis of the first conductor part, or the axis of the third conductor part may not intersect the axis of the first conductor part, or the axis of the third conductor part The axis may intersect with the axis of the first conductor portion at one point.

  According to the coil component of the embodiment, since the first conductor portion is connected in series between the second conductor portion and the third conductor portion, the second conductor portion and the third conductor portion are connected to the first conductor portion. Can be arranged symmetrically. Thereby, the electrostatic capacitance which generate | occur | produces between each of the 1st-3rd conducting wire part becomes small, and the high frequency impedance becomes high. Therefore, it is preferable because the deterioration of the propagation characteristics of the signal line can be further prevented.

  Further, in the coil component according to an embodiment, the axis of the second conductor part and the axis of the third conductor part when viewed from the direction orthogonal to the axis of the first conductor part and the axis of the second conductor part. Is orthogonal to the axis of the first conductor portion.

  According to the coil component of the embodiment, since the axis of the second conductor part and the axis of the third conductor part are orthogonal to the axis of the first conductor part, the second and third conductor parts are separated from the first conductor part. Can be released. Thereby, the distance between a 1st conducting wire part and a 2nd conducting wire part becomes large, and the distance between a 1st conducting wire part and a 3rd conducting wire part becomes large. Therefore, it is preferable because the deterioration of the propagation characteristics of the signal line can be further prevented.

Moreover, in the coil component of one embodiment,
The first flange has a first protrusion and a second protrusion on the bottom side,
The second flange has a first protrusion and a second protrusion on the bottom surface side,
The first protrusion of the first flange and the first protrusion of the second flange are opposed in the axial direction of the first conductor portion,
The second protrusion of the first flange and the second protrusion of the second flange are opposed to the axial direction of the first conductor portion,
The second conductor portion is provided on the first protrusion of the first flange portion,
The third conductor portion is provided on the second protrusion of the second flange portion.

  According to the coil component of the embodiment, the second conductor portion is provided on the first protrusion of the first flange portion, and the third conductor portion is provided on the second protrusion of the second flange portion. The second conductor portion and the third conductor portion are arranged symmetrically with respect to the first conductor portion when viewed from the bottom surface side. Accordingly, the capacitance generated between each of the first to third conductor portions is reduced, and the high frequency impedance is increased. As a result, the deterioration of the propagation characteristics of the signal line can be further prevented, which is preferable.

Moreover, in the coil component of one embodiment,
The electrode is provided on the first protrusion of the first collar,
The electrode is provided on the second protrusion of the second collar.

  According to the coil component of the embodiment, since the electrode is provided on the first projection portion of the first collar portion, the second conductor portion can be brought close to the electrode, and the second projection of the second collar portion. Since the electrode is provided on the part, the third conductor part can be brought close to the electrode. As a result, the length of the lead wire to the electrode of the conducting wire can be shortened, and the resistance of the conducting wire can be reduced, which is preferable.

  Moreover, in the coil component of one Embodiment, the said conducting wire consists of a nickel-plated wire.

  According to the coil component of the above-described embodiment, the conductive wire is made of nickel-plated wire, which is preferable because it is possible to further suppress the deterioration of the signal line and further suppress the deterioration of the signal quality.

  Moreover, in the coil component of one Embodiment, the said 2nd conducting wire part and the said 3rd conducting wire part are provided in the position which does not contact the said electrode.

  According to the coil component of the embodiment, since the second conducting wire portion and the third conducting wire portion are provided at positions that do not contact the electrode, the second conducting wire portion and the third conducting wire portion function as an inductor. This is preferable.

  According to the coil component of the present invention, the conducting wire includes the coil-shaped first conducting wire portion wound around the winding core portion, and the coil-shaped or meander-shaped second conducting wire portion provided on the core, Since the inductance value of the two conductor portions is different from the inductance value of the first conductor portion and the axis of the second conductor portion is different from the axis of the first conductor portion, it is possible to suppress the deterioration of the propagation characteristics of the signal line.

It is the perspective view seen from the bottom face side which shows the coil components of 1st Embodiment of this invention. It is the simplification figure seen from the Y direction of conducting wire. It is a perspective view which shows the mounting state to the board | substrate of a coil component. It is a graph which shows the measurement result of S21 of the Example of this invention. It is a simplified side view which shows the 2nd conducting wire part of the coil components of 2nd Embodiment of this invention. It is a simplified side view which shows the coil components of 3rd Embodiment of this invention. It is the simplification figure seen from the Y direction of the conducting wire of another form. It is the simplification figure seen from the Z direction of the coil component of another form.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

(First embodiment)
FIG. 1 is a perspective view of the coil component according to the first embodiment of the present invention as seen from the bottom side. As shown in FIG. 1, the coil component 1 includes a core 10, a conductive wire 20 provided on the core 10, and an electrode 30 provided on the core 10.

  The core 10 includes a core portion 13, a first flange portion 11 provided at one end of the core portion 13, and a second flange portion 12 provided at the other end of the core portion 13. As a material of the core 10, for example, a material having a dielectric constant of 20 or less such as alumina (nonmagnetic material), Ni—Zn ferrite (magnetic material, insulator), or resin is used. The core 10 is molded, for example, by compressing and molding the material with a mold.

  Here, the bottom surface of the core 10 is a surface mounted on the substrate, and the top surface of the core 10 is a surface opposite to the bottom surface of the core 10. The direction connecting one end and the other end of the core part 13 is defined as the X direction, the direction orthogonal to the X direction on the bottom surface of the core 10 is defined as the Y direction, and the direction connecting the bottom surface and the top surface of the core 10 is defined as the Z direction. . The Z direction is orthogonal to the X direction and the Y direction. The dimension of the coil part 1 in the X direction is a length dimension L, the dimension of the coil part 1 in the Y direction is a width dimension W, and the dimension of the coil part 1 in the Z direction is a height dimension T.

  The core part 13 extends from one end to the other end. The shape of the core part 13 is a rectangular parallelepiped. The shape of the core part 13 may be other shapes such as a cylinder.

  An end surface of the first flange portion 11 is connected to one end of the core portion 13. The first flange 11 has a first protrusion 111 and a second protrusion 112 on the bottom side of the core 10. The first protrusion 111 and the second protrusion 112 are arranged in parallel in the Y direction.

  The end surface of the second flange portion 12 is connected to the other end of the core portion 13. The second flange 12 has a first protrusion 121 and a second protrusion 122 on the bottom surface side of the core 10. The first protrusion 121 and the second protrusion 122 are juxtaposed in the Y direction.

  The first protrusion 111 of the first flange 11 and the first protrusion 121 of the second flange 12 face each other in the X direction. The second protrusion 112 of the first flange 11 and the second protrusion 122 of the second flange 12 face each other in the X direction.

  The electrode 30 is provided on the bottom surface side of the first projection portion 111 and the second projection portion 112 of the first collar portion 11 and on the bottom surface side of the first projection portion 121 and the second projection portion 122 of the second collar portion 12. ing. As a material of the electrode 30, for example, Ag or the like is used.

  The conducting wire 20 includes a first conducting wire portion 21 provided in the core portion 13, and a second conducting wire portion 22 and a third conducting wire portion 23 provided in a region excluding the electrode 30 of the core 10. The first conductor portion 21, the second conductor portion 22, and the third conductor portion 23 are provided at positions that do not contact the electrode 30. The second conductor portion 22 is provided on the first protrusion 111 of the first flange portion 11, and the third conductor portion 23 is provided on the second protrusion portion 122 of the second flange portion 12.

  The first conductor portion 21 has a coil shape wound around the core portion 13. The second conductive wire portion 22 has a coil shape wound around the first protrusion 111 of the first flange portion 11. The third conductor portion 23 has a coil shape wound around the second protrusion 122 of the second flange portion 12.

  The first conductor portion 21 is connected in series between the second conductor portion 22 and the third conductor portion 23. The lead wire on one end side of the conducting wire 20 is connected to the electrode 30 of the first protrusion 111 of the first flange 11. The lead wire on the other end side of the conducting wire 20 is connected to the electrode 30 of the second protrusion 122 of the second flange 12.

  Since the first conductor portion 21, the second conductor portion 22, and the third conductor portion 23 are not wound around the electrode 30, they function as inductors. The number of turns of the second conductor part 22 and the number of turns of the third conductor part 23 are respectively smaller than the number of turns of the first conductor part 21. That is, the inductance value of the second conducting wire portion 22 and the inductance value of the third conducting wire portion 23 are different from the inductance value of the first conducting wire portion 21 and are smaller than the inductance value of the first conducting wire portion 21. The number of turns of the second conductor portion 22 and the number of turns of the third conductor portion 23 are the same. That is, the inductance value of the second conductor portion 22 and the inductance value of the third conductor portion 23 are the same. In addition, the winding number of the 2nd conducting wire part 22 and the winding number of the 3rd conducting wire part 23 may differ, and the inductance value of the 2nd conducting wire part 22 and the inductance value of the 3rd conducting wire part 23 may differ.

  The conducting wire 20 is made of a copper-nickel plated wire. In addition to the copper nickel plating wire, the wire may be, for example, a wire made of a conductive material such as Cu, Al, Au, or Ag, or a polyesterimide copper wire. For example, the conducting wire 20 may be a single wire or a litz wire. The conducting wire 20 may be a magnetic plating wire (including nickel or iron as a wire and coated with plating). Furthermore, the film covering the wire may be a material having a dielectric constant of 20 or less, a heat-resistant material such as polyesterimide, polyesteramide, polyurethane, or the like, or a material having self-bonding property.

  FIG. 2 is a simplified view of the conductive wire 20 as viewed from the Y direction. As shown in FIG. 2, the axis A <b> 2 of the second conducting wire portion 22 is not the same axis as the axis A <b> 1 of the first conducting wire portion 21 but a different axis. The axis A3 of the third conductor portion 23 is not the same axis as the axis A1 of the first conductor portion 21 but a different axis. The axis A1 of the first conducting wire portion 21, the axis A2 of the second conducting wire portion 22, and the axis A3 of the third conducting wire portion 23 are coil-shaped central axes, respectively.

  More specifically, when viewed from the direction (Y direction) perpendicular to the axis A1 of the first conductor portion 21 and the axis A2 of the second conductor portion 22, the axis A2 and the third conductor portion 23 of the second conductor portion 22 are used. The axis A <b> 3 is orthogonal to the axis A <b> 1 of the first conductor portion 21. That is, the axis A1 of the first conductor portion 21 coincides with the X direction. The axis A2 of the second conductor portion 22 and the axis A3 of the third conductor portion 23 are parallel to each other and coincide with the Z direction.

  Next, a method for mounting the coil component 1 will be described.

  As shown in FIG. 3, the coil component 1 is connected to the signal line 50 of the substrate 5 and mounted. The substrate 5 includes a signal line 50 and a ground electrode portion 55 that is electrically insulated from the signal line 50. The signal line 50 has a first port 51 and a second port 52. In the figure, the conductive portion of the substrate 5 is indicated by hatching.

  First, the coil component 1 is shunt-connected to the signal line 50. Specifically, the electrode 30 provided on the first flange portion 11 of the core 10 is electrically connected to the ground electrode portion 55, and the electrode 30 provided on the second flange portion 12 of the core 10 is Electrically connected to line 50. The second conductor portion 22 is located on the ground electrode portion 55 side, and the third conductor portion 23 is located on the signal line 50 side. As described above, the signal line 50 is electrically connected to the ground electrode portion 55 via the conducting wire 20 of the coil component 1.

  Then, a high frequency (RF) signal is propagated to the signal line 50 from the first port 51 toward the second port 52. At this time, a direct current is passed from the ground electrode portion 55 to the signal line 50 via the coil component 1, and the direct current is superimposed on the signal of the signal line 50.

  Thus, with the coil component 1 mounted on the substrate 5, for example, the propagation characteristics of the signal line 50 of the substrate 5 can be evaluated. The measurement of the propagation characteristic is, for example, the measurement of S21. S 21 indicates the transmission amount of the signal transmitted to the second port 52 when the signal incident on the first port 51 is transmitted.

  According to the coil component 1, the conductive wire 20 includes a coil-shaped first conductive wire portion 21 wound around the core portion 13 and coil-shaped second and third conductive wire portions 22 and 23 provided on the core 10. And have. The inductance values of the second and third conductor portions 22 and 23 are different from the inductance value of the first conductor portion 21. The axis A2 of the second conductor portion 22 and the axis A3 of the third conductor portion 23 are different from the axis A1 of the first conductor portion 21. Therefore, since the coil-shaped second and third conductor portions 22 and 23 are added, when the coil component 1 is shunt-connected to the signal line 50 and mounted, it is generated by the first conductor portion 21 that is the main coil. Impedance can be increased in the resonance frequency range, and a mode in which a signal propagates in the shunt direction can be suppressed. Therefore, it is possible to suppress the deterioration of the signal quality by suppressing the deterioration of the propagation characteristics of the signal line 50. In addition, even if any one of the 2nd, 3rd conducting wire parts 22 and 23 is provided, there exists this effect.

  In addition, since the axis A2 of the second conductor portion 22 and the axis A3 of the third conductor portion 23 are not the same axis as the axis A1 of the first conductor portion 21, but are different axes, the first to third conductor portions 21 to 23 are connected. The first conductor portion 21 may not be arranged side by side along the direction of the axis A1. Therefore, the axis A1 of the first conductor portion 21 in the coil component 1 is compared with the case where the axis A2 of the second conductor portion 22 and the axis A3 of the third conductor portion 23 coincide with the axis A1 of the first conductor portion 21. The size of the direction (length dimension L) can be reduced. In addition, even if any one of the 2nd, 3rd conducting wire parts 22 and 23 is provided, there exists this effect.

  Further, since the first conductor portion 21 is connected in series between the second conductor portion 22 and the third conductor portion 23, the second conductor portion 22 and the third conductor portion 23 are connected to the first conductor portion 21. Can be arranged symmetrically. Thereby, the electrostatic capacitance which generate | occur | produces between each of the 1st-3rd conducting wire parts 21-23 becomes small, and the high frequency impedance becomes high. Therefore, the deterioration of the propagation characteristics of the signal line 50 can be further prevented.

  Further, since the axis A2 of the second conductor portion 22 and the axis A3 of the third conductor portion 23 are orthogonal to the axis A1 of the first conductor portion 21, the second and third conductor portions 22, 23 are connected to the first conductor portion. 21 can be separated. Thereby, the distance between the 1st conducting wire part 21 and the 2nd conducting wire part 22 becomes large, and the distance between the 1st conducting wire part 21 and the 3rd conducting wire part 23 becomes large. Therefore, the deterioration of the propagation characteristics of the signal line 50 can be further prevented.

  Further, since the second conductor portion 22 is provided on the first protrusion 111 of the first flange portion 11 and the third conductor portion 23 is provided on the second protrusion portion 122 of the second flange portion 12, The second conductor portion 22 and the third conductor portion 23 are arranged symmetrically with respect to the first conductor portion 21 when viewed from the bottom surface side. Accordingly, the capacitance generated between each of the first to third conductor portions 21 to 23 is reduced, and the high frequency impedance is increased. As a result, the deterioration of the propagation characteristics of the signal line 50 can be further prevented. In the experiment, it is experimentally possible to arrange the second conductor portion 22 and the third conductor portion 23 symmetrically with respect to the first conductor portion 21 and to suppress the deterioration of the characteristics of S21 as compared to the case where they are asymmetrically arranged. Has been found.

  In addition, since the first protrusion 111 of the first flange 11 is provided with the electrode 30, the second conductor 22 can be brought close to the electrode 30, and the second protrusion of the second flange 12. Since the part 30 is provided with the electrode 30, the third conductor part 23 can be brought close to the electrode 30. As a result, the length of the lead wire to the electrode 30 of the conducting wire 20 can be shortened, and the resistance of the conducting wire 20 can be reduced.

  Moreover, since the conducting wire 20 is made of a nickel-plated wire, it is possible to further suppress the deterioration of the propagation characteristics of the signal line 50 and further suppress the deterioration of the signal quality.

  Since the length L of the coil component 1 can be reduced as described above, the coil component 1 can be easily mounted on the substrate 5 as compared with the conventional coil component. In addition, the coil component 1 is easier to manufacture than the conventional coil component, and the cost is further reduced.

  Next, an embodiment of the coil component 1 will be described.

  The structure of the embodiment is the same as the structure of the coil component 1 shown in FIG. The size of the coil component 1 is 1.6 mm (L dimension) × 0.8 mm (W dimension). The YZ cross section of the core part 13 is 0.76 mm (Y direction) × 0.4 mm (Z direction). The XY cross section of the first protrusion 111 of the first collar 11 and the XY cross section of the second protrusion 122 of the second collar 12 are each 0.28 mm (X direction) × 0.22 mm (Y direction). is there. The conducting wire 20 is made of a nickel-plated wire. The wire diameter of the conducting wire 20 is 0.03 mm. The number of turns of the first conductor portion 21 is 20 turns. The number of turns of the second conductor portion 22 and the number of turns of the third conductor portion 23 are each two turns.

  As shown in FIG. 3, measurement of S21 of the signal line 50 is performed in a state where the coil component 1 is mounted on the signal line 50 of the substrate 5, and the result is shown in FIG. In FIG. 4, the horizontal axis indicates the frequency of the signal propagating to the signal line 50. The vertical axis indicates the value of S21, and the higher the numerical value of S21, the better the characteristics of S21.

  In FIG. 4, a graph indicated by a dotted line indicates a theoretical value of the signal line 50 of the substrate 5, and indicates a calculated value of the pass characteristic of the signal line 50 of the substrate 5 illustrated in FIG. A graph shown by a solid line shows an example, and shows a calculated value of the pass characteristic of the signal line 50 when the coil component 1 shown in FIG. 3 is mounted on the substrate 5. The graph shown by the alternate long and short dash line shows the first comparative example, and unlike the example, there is no structure of the second and third conductor portions of the example, and there is one protrusion for each of the first and second collars. The conductive wire is made of a copper wire. That is, the calculated value of the pass characteristic of the signal line 50 when the coil component provided with only the first conductor portion 21 of the coil component 1 shown in FIG. The graph shown by a two-dot chain line shows a second comparative example, and unlike the example, there is no structure of the second and third conductor portions of the example, and each protrusion of the first and second collars is 1 One. That is, the calculated value of the pass characteristic of the signal line 50 when the coil component provided with only the first conductor portion 21 of the coil component 1 shown in FIG.

  As shown in FIG. 4, in the example (solid line), a result close to the theoretical value (dotted line) is obtained, and the deterioration of S21 is suppressed. On the other hand, in the first comparative example (dashed line), resonance occurred at low frequencies and high frequencies, and deterioration of S21 appeared. In the second comparative example (two-dot chain line), deterioration of S21 appeared at high frequencies. This result shows that the 2nd, 3rd conducting wire part of an Example has contributed greatly to suppression of deterioration of S21.

(Second Embodiment)
FIG. 5 is a simplified side view showing the coil component according to the second embodiment of the present invention. The second embodiment differs from the first embodiment in the shapes of the second and third conductor portions. This different configuration will be described below. Note that in the second embodiment, the same reference numerals as those in the first embodiment have the same configurations as those in the first embodiment, and a description thereof will be omitted.

  As shown in FIG. 5, the second conductor portion 22A has a meander shape. The meander shape is formed in a meandering shape in which straight portions 22a and folded portions 22b are alternately connected. The second conductive wire portion 22 </ b> A is provided on one surface of the first protrusion 111 of the first flange portion 11. The second conductor portion 22A is formed by printing, for example. The material of the second conductor portion 22A is, for example, a nickel plating foil or a metal foil such as Cu, Al, Au, or Ag.

  The axis A2 of the second conductor portion 22A is coincident with the Z direction and is not the same axis as the axis A1 of the first conductor portion 21 shown in FIG. The axis A2 of the second conductor portion 22A refers to the center line of the meander shape, that is, the direction in which the line segment connecting the centers of the meander-shaped folded widths extends. Specifically, the axis A2 of the second conductor portion 22A The axis A2 passes through the centers of the plurality of linear portions 22a.

  Although not shown, the shape of the third conductor portion (see the third wire portion 23 in FIG. 2) is the same as that of the second conductor portion 22A. That is, the third conductor portion has a meander shape. The third conductor portion is provided on one surface of the second protrusion 122 of the second flange portion 12. The axis of the third conductor portion coincides with the Z direction and is not the same axis as the axis A1 of the first conductor portion 21 shown in FIG.

  According to the second embodiment, even if the second conductor portion 22A and the third conductor portion are formed in a meander shape, the same effects as when the second and third conductor portions shown in the first embodiment are formed in a coil shape are exhibited. .

(Third embodiment)
FIG. 6 is a simplified side view showing the coil component according to the third embodiment of the present invention. The third embodiment differs from the first embodiment in the shape of the core portion of the core and the positions of the second and third conductor portions. This different configuration will be described below. Note that in the third embodiment, the same reference numerals as those in the first embodiment have the same configurations as those in the first embodiment, and a description thereof will be omitted.

  As shown in FIG. 6, the core portion 13A of the core 10A includes a large diameter portion 13a and small diameter portions 13b provided at both ends of the large diameter portion 13a. The diameter of the small diameter part 13b is smaller than the diameter of the large diameter part 13a. The axis of the small diameter portion 13b is not the same axis as the axis of the large diameter portion 13a but is a different axis. The axis of the small diameter portion 13b is parallel to the axis of the large diameter portion 13a.

  The first conductor portion 21 is wound around the large diameter portion 13a, the second conductor portion 22 is wound around one small diameter portion 13b, and the third conductor portion 23 is wound around the other small diameter portion 13b. Yes. The axis A2 of the second conductor portion 22 is not the same axis as the axis A1 of the first conductor portion 21, but is a different axis. The axis A3 of the third conductor portion 23 is not the same axis as the axis A1 of the first conductor portion 21 but a different axis. The axis A2 of the second conductor portion 22 and the axis A3 of the third conductor portion 23 coincide. The axis A2 of the second conductor portion 22 and the axis A3 of the third conductor portion 23 are parallel to the axis A1 of the first conductor portion 21.

  According to 3rd Embodiment, there exists an effect similar to the said 1st Embodiment. Moreover, since the 2nd conducting wire part 22 and the 3rd conducting wire part 23 are provided in the core part 13A with the 1st conducting wire part 21, winding to the core 10A of the conducting wire 20 becomes easy.

  The present invention is not limited to the above-described embodiment, and the design can be changed without departing from the gist of the present invention. For example, the feature points of the first to third embodiments may be variously combined.

  In the above-described embodiment, the second and third conductor portions are provided in addition to the first conductor portion. However, any one of the second and third conductor portions may be provided. Alternatively, in addition to the first to third conductor portions, one or more conductor portions may be provided.

  In the said embodiment, although the shape of the 2nd, 3rd conducting wire part was made the same, you may make it make the shape of the 2nd, 3rd conducting wire part different. That is, the second conductor portion may be in a coil shape, and the third conductor portion may be in a meander shape, or vice versa.

  In the embodiment, the number of protrusions of the first and second collars is two, but may be one or three or more. And you may make it provide a conducting wire part in arbitrary protrusion parts.

  In the above-described embodiment, the electrodes are provided on the protrusions of the flanges provided with the second and third conductors. However, the electrodes are not provided on the protrusions of the flanges provided with the second and third conductors. It may be. It has been found through experiments that deterioration of the characteristics of S21 can be suppressed regardless of the presence or absence of electrodes.

  In the above-described embodiment, the second and third conductor portions are provided in the protrusion portion and the core portion of the flange portion, but may be provided in a region other than the portion other than the core electrode. That is, the second and third conductor portions function as inductors, and the inductance values of the second and third conductor portions may be different from the inductance value of the first conductor portion. Moreover, the inductance value of a 2nd, 3rd conducting wire part may be larger than the inductance value of a 1st conducting wire part.

  In the above embodiment, the protrusion is provided on the bottom surface side of the flange, but the protrusion is provided on the top surface side of the flange, and the second and third conductor portions are provided on the protrusion on the top surface side. May be. Further, a protrusion may be provided on the end face side of the flange, and the second and third conductor portions may be provided on the end face side protrusion.

  In addition, the cross-sectional area of the YZ cross section of the core portion around which the first conductive wire portion is wound, the cross-sectional area of the XY cross section of the first protrusion portion of the first flange portion around which the second conductive wire portion is wound, The cross-sectional area of the XY cross section of the 2nd projection part of the 2nd collar part by which a conducting wire part is wound can be changed separately, respectively. And the characteristic of S21 of a desired frequency band can be raised in the coil component 1 whole by adjusting a mutual cross-sectional area. It has been found through experiments that S21 in the low frequency band deteriorates as the cross-sectional area of the YZ cross section of the winding core portion decreases. In addition, in the experiment, the smaller the cross-sectional area of the first protrusion of the first collar part, or the cross-sectional area of the second protrusion of the second collar part, the lower the resonance in the high frequency band. Has been found.

  Further, the winding direction of the second and third conducting wire portions may be the same as the winding direction of the first conducting wire portion (forward direction), that is, the direction of the magnetic field generated in the first conducting wire portion, The direction of the magnetic field generated in the second and third conductor portions is the same. Alternatively, the winding direction of the second and third conducting wire portions may be different (reverse direction) from the winding direction of the first conducting wire portion, that is, the direction of the magnetic field generated in the first conducting wire portion and the second direction. The direction of the magnetic field generated at the third conductor portion cancels out. It has been found through experiments that the deterioration of the characteristics of S21 can be suppressed regardless of whether the winding direction of the first conductor portion and the winding direction of the second and third conductor portions are the same or different.

  Further, the winding pitch of the second and third conductor portions may be wide or narrow. It has been experimentally found that the wider the winding pitch, the more the resonance shifts to a lower frequency. For example, when the winding pitch is 0.04 mm, 0.06 mm, and 0.08 mm, the resonance shifts to the lowest frequency when the winding pitch is 0.08 mm.

  Further, the number of turns of the second and third conductor portions may be any number as long as it is one turn or more. It is to be noted that the two protrusions of the first hook part and the second hook part 2 are respectively wound around the one protrusion part of the first hook part and the one protrusion part of the second hook part, respectively. Experiments have found that high-frequency resonance can be suppressed by winding a conducting wire around each of the protrusions for one turn.

  Further, the dielectric constant of the core portion around which the first conductor portion is wound, the dielectric constant of the first protrusion portion of the first flange portion around which the second conductor portion is wound, and the third conductor portion are wound. The dielectric constant of the second protrusion of the second collar can be changed individually. And the characteristic of S21 of a desired frequency band can be raised in the coil component 1 whole by adjusting a mutual dielectric constant. It has been found through experiments that S21 in the high frequency band gradually improves as the dielectric constant of the core becomes smaller. For example, when the dielectric constant is 1, 5, 10, and 15, the high frequency band S21 is improved when the dielectric constant is 5, 10, and 15, but when the dielectric constant is 1, the high frequency band S21. Improves the most. The same applies to the dielectric constant of the first protrusion of the first collar or the dielectric constant of the second protrusion of the second collar.

  In the embodiment, the axes of the second and third conductor portions are orthogonal to the axis of the first conductor portion when viewed from the Y direction. However, as shown in FIG. 7, the second conductor portion is viewed from the Y direction. The first angle α1 formed by the axis A2 of 22 and the axis A1 of the first conductor portion 21 and the second angle α2 formed by the axis A3 of the third conductor portion 23 and the axis A1 of the first conductor portion 21 are 90 It may be from ˜180 °. Further, the first angle α1 and the second angle α2 may be different from each other.

  Further, the distance between the first conductor portion and the second and third conductor portions may be increased. For example, as shown in FIG. 8, the first conductor portion 21 and the second conductor portion 22 are increased by increasing the width dimension W of the coil component 1, that is, by increasing the width dimension of the first and second flange portions 11 and 12. And the second distance D2 between the first conductor portion 21 and the third conductor portion 23 can be increased. It has been found through experiments that S21 in the high frequency band is improved by increasing the first and second distances D1 and D2. For example, when the width dimension W is 1.00 mm, 1.25 mm, 1.50 mm, 2.00 mm, and 2.50 mm, S21 in the high frequency band is improved when the width dimension W is 2.50 mm.

DESCRIPTION OF SYMBOLS 1 Coil component 5 Board | substrate 10,10A Core 11 1st collar part 111 1st projection part 112 2nd projection part 12 2nd collar part 121 1st projection part 122 2nd projection part 13, 13A Core part 20 Conductor 21 1st Conductor portion 22, 22A Second conductor portion 23 Third conductor portion 30 Electrode 50 Signal line 51 First port 52 Second port 55 Ground electrode portion A1 Axis of first conductor portion A2 Axis of second conductor portion A3 Third conductor portion Axis of

Claims (10)

A core having a core part and a first collar part and a second collar part provided at both ends of the core part;
A conductor provided in the core;
An electrode provided on the first collar and the second collar,
The conducting wire is
A coil-shaped first conductor portion wound around the core portion;
A coil-shaped or meander-shaped second conductor provided in the core;
The inductance value of the second conductor part is different from the inductance value of the first conductor part,
The shaft of the second conductor section, Ri different axes der not coaxial with the axis of the first conductor portion,
The conductor coil component according to claim Rukoto a wire rod of nickel plating. The coil component according to claim 1,
The conducting wire has a coil-shaped or meander-shaped third conducting wire portion provided in the core,
The first conductor portion is connected in series between the second conductor portion and the third conductor portion,
The inductance value of the third conductor part is different from the inductance value of the first conductor part,
A coil component, wherein the axis of the third conductor portion is not the same axis as the axis of the first conductor portion, but is a different axis. The coil component according to claim 2,
The axis of the second conductor part and the axis of the third conductor part are the axis of the first conductor part when viewed from the direction orthogonal to the axis of the first conductor part and the axis of the second conductor part. Coil parts characterized by being orthogonal. The coil component according to claim 2 or 3,
The first flange has a first protrusion and a second protrusion on the bottom side,
The second flange has a first protrusion and a second protrusion on the bottom surface side,
The first protrusion of the first flange and the first protrusion of the second flange are opposed in the axial direction of the first conductor portion,
The second protrusion of the first flange and the second protrusion of the second flange are opposed to the axial direction of the first conductor portion,
The second conductor portion is provided on the first protrusion of the first flange portion,
The third conductive wire portion is provided on the second protrusion of the second flange portion, and the coil component is characterized in that: A core having a core part and a first collar part and a second collar part provided at both ends of the core part;
A conductor provided in the core;
Electrodes provided on the first flange and the second flange;
With
The conducting wire is
A coil-shaped first conductor portion wound around the core portion;
A coil-shaped or meander-shaped second conductor provided in the core;
Have
The inductance value of the second conductor part is different from the inductance value of the first conductor part,
The axis of the second conductor portion is not the same axis as the axis of the first conductor portion, but is a different axis,
The conducting wire has a coil-shaped or meander-shaped third conducting wire portion provided in the core,
The first conductor portion is connected in series between the second conductor portion and the third conductor portion,
The inductance value of the third conductor part is different from the inductance value of the first conductor part,
The axis of the third conductor portion is not the same axis as the axis of the first conductor portion, and is a different axis.
The first flange has a first protrusion and a second protrusion on the bottom side,
The second flange has a first protrusion and a second protrusion on the bottom surface side,
The first protrusion of the first flange and the first protrusion of the second flange are opposed in the axial direction of the first conductor portion,
The second protrusion of the first flange and the second protrusion of the second flange are opposed in the axial direction of the first conductor portion,
The second conductor portion is provided on the first protrusion of the first flange portion,
The third conductive wire portion is provided on the second protrusion of the second flange portion, and the coil component is characterized in that: The coil component according to claim 5 ,
The axis of the second conductor part and the axis of the third conductor part are the axis of the first conductor part when viewed from the direction orthogonal to the axis of the first conductor part and the axis of the second conductor part. Coil parts characterized by being orthogonal . In the coil component according to any one of claims 4 to 6 ,
The electrode is provided on the first protrusion of the first collar,
The coil component , wherein the electrode is provided on the second protrusion of the second collar . The coil component according to any one of claims 2 to 7,
The coil component, wherein the second conducting wire portion and the third conducting wire portion are provided at positions not in contact with the electrodes. A core having a core part and a first collar part and a second collar part provided at both ends of the core part;
A conductor provided in the core;
Electrodes provided on the first flange and the second flange;
With
The conducting wire is
A coil-shaped first conductor portion wound around the core portion;
A coil-shaped or meander-shaped second conducting wire provided on the winding core;
Have
The inductance value of the second conductor part is different from the inductance value of the first conductor part,
The coil component, wherein the axis of the second conducting wire portion is not the same axis as the axis of the first conducting wire portion but a different axis. In the coil component according to claim 9,
The conducting wire has a coil-shaped or meander-shaped third conducting wire portion provided in the core portion,
The first conductor portion is connected in series between the second conductor portion and the third conductor portion,
The inductance value of the third conductor part is different from the inductance value of the first conductor part,
A coil component, wherein the axis of the third conductor portion is not the same axis as the axis of the first conductor portion, but is a different axis.

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