JP2618143B2 - Receiving antenna - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving antenna for satellite broadcasting or communication satellites.

[0002]

2. Description of the Related Art A conventional satellite broadcasting receiving antenna includes a parabolic or flat antenna 2 having a correctly adjusted azimuth and elevation as shown in FIG.
There is something that is made to support. In the case of a flat antenna, as shown in FIGS.
But in 10 mm, to form a receiving coil 5 formed by winding a conductor in 1 _^1/6-turn so that the height H ₁ is 4 mm, the receiver coil 5
Between the metal plates 6 and 7 as shown in FIGS.
More than 60 are arranged to collect radio waves from the lower part of the metal plate 6.

[0003]

However, conventionally, it is important to correctly point the antenna to the satellite even in the case of the parabolic type, including the flat type antenna shown in FIGS. Therefore, when the antenna is installed on the wall, roof surface or veranda, etc. that compose the house, the antenna is oriented at its own azimuth (220.9 to 216.2 ゜ in Japan) and elevation (29.1 to 53.6 ゜ in Japan). In addition, the wind pressure, snowfall, accumulation of garbage, and other factors of reception impediment also increased, and it was difficult to say that this was a preferable form from the viewpoint of the house landscape and balance.

[0004] In view of the above problems, the present invention has been developed in consideration of wind pressure, snow cover,
It is an object of the present invention to provide a satellite broadcasting antenna having a small form of reception obstruction such as accumulation of garbage and a preferable form in view of a house and a balance.

[0005]

The technical solution of the present invention for solving this technical problem is to provide a pair of metal plates 16 and 17.
And a large number of spheres 19 having a receiving coil 20 provided therein.A large number of spheres 19 are sandwiched between the pair of metal plates 16 and 17, and each sphere 19 is rolled between the metal plates 16 and 17. One metal plate 17 is connected to the other metal plate 16 so that the orientation of the receiving coil 20 of each sphere 19 can be variably adjusted.
The metal plate is movable in the plate surface direction with respect to the metal plate.
A plurality of fixed coils 31 inclined outward are provided around the entire circumference of the fixed coils 31, 16, and 17. The point is that a metal plate moving means for moving the metal plate 17 until the reception gain of the receiving coil 20 is maximized is provided.

[0006]

When mounting the antenna on a veranda or the like, moving one of the metal plates 17 in the direction of the plate surface causes a number of spheres 19 to roll simultaneously between the metal plates 16 and 17, and the receiving coil 20 of each sphere 19 to be mounted. Is variably adjusted, and each receiving coil 20 can be correctly oriented toward the satellite. Therefore, it is not necessary to adjust the azimuth and the elevation angle of the antenna itself, it is sufficient to simply mount and fix it on a veranda or the like, and the antenna can be easily and reliably attached to the veranda or the like.

When the satellite broadcast receiving antenna of the present invention is mounted on a moving body such as a train or a car, if the direction of the antenna with respect to the satellite changes due to the movement of the moving body,
The reception gain of each fixed coil 9 changes. With this change, the direction of the satellite is quickly detected, and the control unit 32 controls the stepping motor 33 so that these fixed coils can be detected.
In the direction of the fixed coil 31 of the maximum gain of reception among 31,
While moving one metal plate 17, the receiving coil
When the reception gain of 20 becomes maximum, the movement of the metal plate 17 is stopped. As a result, the direction of the receiving coil 20 is automatically adjusted so that the direction of each receiving coil 20 matches the direction of the satellite.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described with reference to the illustrated embodiment. In FIGS.
A box shape having a circular bottom wall portion 12, a side wall portion 13 rising from the outer periphery of the bottom wall portion 12, and an upper wall portion 14 inclined upward inward at an angle of 30 ° to 35 ° from the upper end of the side wall portion 13. The case 11 is provided with a circular opening 15 at the upper end thereof. 16 is a lower metal plate made of duralumin etc.
It is stored and fixed at the bottom of 11. Reference numeral 17 denotes an upper metal plate made of duralumin or the like, which is arranged so as to cover the opening 15 of the antenna case 11.

In FIGS. 1 to 3, reference numeral 19 denotes a sphere, which is disposed in large numbers on a lower metal plate 16, and an upper metal plate 17 is placed on each sphere 19 to form a pair of metal plates 16,1.
Many spheres 19 are sandwiched between the seven. The receiving coil 20 is housed in each sphere 19, and is fixed to the inner surface of the sphere 19 with an adhesive or the like. The receiving coil 20 has, for example, a diameter D
1 _^1/6 conductors so but the height H ₁ becomes about 4mm at 10mm
It consists of winding. The upper metal plate 17 is movable in the plate surface direction with respect to the lower metal plate 16, that is, in the X-axis and Z-axis directions shown in FIG. 1, and by moving the upper metal plate 17 in the plate surface direction, Sphere 19 on metal plate 16,1
The direction of the receiving coil 20 of each sphere 19 can be variably adjusted by rolling between the spheres.

An inner conductor 23 is bonded to the inner surface of each sphere 19,
When the lower end of the receiving coil 20 comes into contact with the inner conductor 23, the inner conductor 23 is connected to the receiving coil 20. An outer conductor 24 is adhered to the lower metal plate 16 side of the outer surface of the sphere 19, and the inner conductor 23 and the outer conductor 24 are connected to each other by a connection conductor 25 penetrating through the sphere 19. An insulating material 26 is fixed on the upper surface of the lower metal plate 17 over substantially the entire surface, and a connection conductor 27 is fixed on the insulating material 26 in correspondence with the external conductor 24 of each sphere 19. The connection conductor 27 and the outer conductor 24 have a size that covers the rolling range of the sphere 19,
The connection between the connection conductor 27 and the external conductor 24 is always maintained regardless of the rolling of the sphere 19. This outer conductor 24
The current collecting cable 28 is connected to the lower metal plate 16 in the thickness direction, taken out from the lower surface, and connected to a converter (not shown).

A fixed coil 31 is provided around the metal plates 16 and 17 in the antenna case 11 over the entire circumference, and each fixed coil 31 extends outward on the lower surface of the upper wall portion 14 of the antenna case 11. The azimuth of each fixed coil 31 is sequentially changed by a small angle. The received signal of each fixed coil 31 is input to the control unit 32 shown in FIG. The control unit 32 controls the stepping motors 33 and 34 shown in FIGS. 4 and 5, and controls the upper metal plate 17 to maximize the reception gain of the receiving coil 20 by controlling the stepping motors 33 and 34. Move to become. That is, the stepping motor 33 moves the upper metal plate 17 in the X-axis direction via the link mechanism 35 by forward / reverse drive, and the stepping motor 34 moves the upper metal plate 17 via the link mechanism 36 via the link mechanism 36 by forward / reverse drive. The control unit 32 drives the stepping motors 33 and 34 to move the upper metal plate 17 in the direction of the fixed coil 31 having the maximum gain of reception among the fixed coils 31. When the reception gain of each reception coil 20 becomes maximum, the driving of the stepping motors 33 and 34 is stopped, whereby the reception coil 20 of each sphere 19 is automatically adjusted in the direction of the satellite.

FIG. 7 shows another embodiment in which the inner conductor 23 is formed.
And the connection conductor 25 is omitted, and the lower end of the reception coil 20 is
It is configured to penetrate the sphere 19 and directly connect to the external conductor 24. The other points are the same as in the above embodiment. In the above embodiment, the metal plate moving means for automatically moving the metal plate 17 is constituted by the stepping motors 33 and 34 and the link mechanisms 35 and 36. , A solenoid, a motor other than a stepping motor, a gear mechanism, and the like.

[0013]

The receiving antenna according to the present invention is not limited to the receiving antenna for satellite broadcasting, but can be applied to other receiving antennas for communication satellites. According to the present invention, a pair of metal plates 16, 17 and a plurality of spheres 19 provided with a receiving coil 20 therein are provided, and a number of spheres 19 are sandwiched between the pair of metal plates 16, 17; Sphere 19 on metal plate 16,1
Since one of the metal plates 17 is movable in the direction of the plate surface with respect to the other metal plate 16 so that the direction of the receiving coil 20 of each sphere 19 can be variably adjusted by rolling between the seven metal balls 17. However, by moving the one metal plate 17 in the direction of the plate surface, each receiving coil can be correctly oriented toward the satellite. Therefore, when mounting the antenna, it is only necessary to mount and fix the antenna on a veranda or the like. For this reason, the antenna has large factors of reception obstruction such as wind pressure, snowfall, accumulation of dust, and the like, and has a preferable form in view of the house landscape and balance. Moreover, the adjustment of the direction of the receiving coil
The movement of the one metal plate 17 can be easily performed, and the mounting and the direction of the antenna can be easily and reliably adjusted.

A plurality of fixed coils 31 inclined outward are provided around the metal plates 16 and 17 over the entire circumference. Of these fixed coils 31, the fixed coil 31 having the maximum gain for reception is provided. In the direction of the one metal plate 17
Is provided until the reception gain of the reception coil 20 is maximized, so that the direction of each reception coil 20 can be automatically adjusted to match the direction of the satellite. Even if the antenna of the present invention is mounted on a moving body such as a train or a car, the receiving coil
The 20 can always be pointed at the satellite and the radio waves from the satellite can be received effectively, so that mobile stations can fully enjoy satellite broadcasting.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing one embodiment of the present invention.

FIG. 2 is a plan view.

FIG. 3 is a side sectional view.

FIG. 4 is a plan view.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a side sectional view for explaining the operation.

FIG. 7 is a side sectional view showing another embodiment.

FIG. 8 is a perspective view showing a conventional example.

FIG. 9 is a plan view of a receiving coil.

FIG. 10 is a side view of a receiving coil.

FIG. 11 is a side view showing a conventional example.

FIG. 12 is a plan view.

[Explanation of symbols]

 16 Lower metal plate 17 Upper metal plate 19 Sphere 20 Receiving coil 31 Fixed coil 32 Control unit 33 Stepping motor 34 Stepping motor 35 Link mechanism 36 Link mechanism

Claims (1)

(57) [Claims] A pair of metal plates (16), (17), and a number of spheres (19) provided with a receiving coil (20) therein, between the pair of metal plates (16), (17). A large number of spheres (19) are sandwiched, and each sphere (19) is rolled between metal plates (16) (17) so that the orientation of the receiving coil (20) of each sphere (19) can be variably adjusted. In addition, one metal plate (17) is movable in the plate surface direction with respect to the other metal plate (16), and a plurality of metal plates (16) and (17) are inclined outwardly around the metal plates (16) and (17). Fixed coil (31) is provided over the entire circumference, and among these fixed coils (31), the fixed coil (31) having the maximum gain of reception.
A metal plate moving means for moving the one metal plate (17) until the reception gain of the receiving coil (20) is maximized in the direction of (1).