JP3592460B2 - Printed wiring board and radio - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a printed wiring board to which an antenna can be connected and a wireless device including the printed wiring board.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a mobile phone or another wireless device, in order to perform a performance test of a product, as shown in FIGS. 8 and 11, an antenna 40 and a wireless unit constituting a part of a wireless communication circuit are connected. The coaxial connector 1 is provided therebetween, and the test is performed from the measurement circuit 20 connected to the coaxial cable 23 by connecting the coaxial cable 23 to the coaxial connector 1 in a state where the antenna 40 is not connected.
[0003]
Here, the portion of the printed wiring board to which the antenna 40 is connected was configured as shown in FIG. In other words, the antenna feeding pattern 2A whose center is circularly removed is formed at the corner of the printed wiring board 4 corresponding to the square surface to which the tongue-shaped terminal 61 extending from the antenna 40 shown in FIG. . A screw hole 25 is formed at the center of the antenna feeding pattern 2A. A screw 62 is screwed into the screw hole 25 through a hole of a terminal 61 of the antenna 40, and the antenna 40 is fixed to the printed wiring board 4. It is configured to be.
[0004]
A ground pattern 5 and a first pattern 11 connected to a circuit for wireless communication are formed on the printed wiring board 4, and a coaxial cable 23 for connecting a coaxial cable 23 is formed on the first pattern 11. Connector 1 is arranged. A measurement circuit 20 for performing a performance test of a wireless circuit is connected to the coaxial connector 1 via a coaxial cable 23 connected to the pin jack 22 as shown in FIG. 9 and connected to the pin jack 22. . In this way, the measurement circuit 20 is connected, and a test is performed as to whether the circuit for wireless communication can transmit and receive a signal of a predetermined frequency.
[0005]
For the above test, the coaxial connector 1 and the antenna feed pattern 2A are separated. That is, if the coaxial connector 1 and the antenna feeding pattern 2A are connected in advance, an appropriate test cannot be performed by the measurement circuit 20 due to the reactance component of the antenna feeding pattern 2A. That is, when the measurement circuit 20 is connected to the coaxial connector 1 with the pin jack 22 interposed therebetween, in order to realize the state of the wireless communication circuit in the state where the antenna 40 is connected, the reactance of the antenna feed pattern 2A is required. Therefore, it is necessary to separate the coaxial connector 1 and the antenna feed pattern 2A from each other.
[0006]
Therefore, conventionally, the auxiliary pattern 13 is formed so as to slightly extend from the antenna feed pattern 2A in the direction of the coaxial connector 1, and the auxiliary pattern 12 is slightly extended from the portion of the coaxial connector 1 in the direction of the antenna feed pattern 2A. When the test is performed by the measurement circuit 20 and it is detected that the circuit for wireless communication is appropriate, the pin jack 22 is removed from the coaxial connector 1 and the space between the auxiliary patterns 12 and 13 is formed, for example. The product was connected by soldering to complete the product.
[0007]
[Problems to be solved by the invention]
For this reason, after conducting a test of a circuit for wireless communication in which the work such as soldering is basically completed, it is necessary to perform the work such as soldering again, and the work flow is poor and the productivity is reduced. Was the cause.
[0008]
SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the conventional wireless device and the printed wiring board used therein, and an object of the present invention is to appropriately perform a performance test of a circuit for wireless communication. To provide a printed wiring board that does not require soldering or the like after the performance test, improves the work flow, and improves productivity. To provide a wireless device that
[0011]
[Means for Solving the Problems]
The printed wiring board according to claim 1 of the present invention has a first pattern for connecting to a circuit for wireless communication, a screw hole for connecting a terminal extending from an antenna, and a large number of holes around the screw hole. An antenna feed pattern comprising a plurality of patterns that are divided and arranged, and are in contact with each other at a part of a connection surface of a terminal extending from the antenna, and a coaxial connector that connects a coaxial cable to the first pattern is arranged. In addition, a portion from one of a plurality of patterns constituting the antenna feeding pattern to the coaxial connector is coupled by a second pattern. With this configuration, the first pattern forming the antenna feeding pattern and the coaxial connector are coupled by the second pattern, so that soldering is not required, and the area of the pattern forming the antenna feeding pattern extends from the antenna. Since the size is such that only a part of the connection surface of the terminal is in contact and only one pattern is connected to the coaxial connector, the reactance component is smaller than before, and the measurement circuit is connected to the coaxial connector. Thus, a suitable test can be performed even when a performance test of a circuit for wireless communication is performed.
[0015]
Radio device according to claim 2 of the present invention comprises a printed wiring board according to claim 1, an antenna, characterized in that it comprises a circuit for wireless communication. With this configuration, it is possible to appropriately perform a performance test when manufacturing a wireless device, and it is not necessary to perform a soldering operation after a performance test of a circuit for wireless communication.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a printed wiring board and a wireless device according to an embodiment of the present invention will be described with reference to the accompanying drawings. In each of the drawings, the same components are denoted by the same reference numerals, and redundant description will be omitted. FIG. 11 shows a configuration diagram of the wireless device. The radio includes a radio unit 31, a modem unit 32, a TDMA unit 33, a communication unit 34, a control unit 35, a memory unit 36, a sounder 37, a vibrator 21, an operation unit 38, and a display unit 54. An antenna 40 is connected to an antenna switch (SW) 39 of the wireless unit 31 so that a signal from the transmitting unit 42 is transmitted to the antenna 40 and a signal received from the antenna 40 is received by the receiving unit 41. It is configured. The receiving unit 41 converts a signal into an intermediate frequency according to the frequency given from the synthesizer 43, and the transmitting unit 42 converts the signal into a radio frequency. An oscillator 44 is connected to the synthesizer 43, and a predetermined reference frequency is supplied to the synthesizer 43. The modem unit 32 includes a demodulation unit 45 for demodulating a signal and a modulation unit 46 for modulating a signal. The TDMA unit 33 includes a TDMA decoding unit 47 for extracting a signal for each channel from the demodulated signal, and a TDMA encoding unit 48 for allocating a transmission signal to each channel. Also, when the mode is shifted to the inter-terminal registration mode of the group call code, the TDMA unit 33 diverts the channel used for normal communication to the channel for registering the group call code, and A timing management unit 49 is provided for managing the transmission and reception of signals at a timing equal to the communication timing for registering the group call code.
[0017]
The signal decoded by the TDMA decoding unit 47 is decoded by the ADPCM transcoder 50 of the communication unit 34 according to the adaptive differential PCM method, further reaches the PCM codec 51, is converted back to a voice signal, and is sent to the receiver 52. As a result, the received voice is transmitted from the receiver 52. On the other hand, the audio signal input from the transmitter 53 is subjected to PCM encoding in the PCM codec 51, further transmitted to the ADPCM transcoder 50, and subjected to encoding by the adaptive differential PCM method, and reaches the TDMA encoder 48. Encoded.
[0018]
The control unit 35 has a built-in timer and is configured by a microprocessor or the like, and controls each unit based on programs and data stored in the memory unit 36. The control unit 35, when receiving a calling signal via the TDMA decoding unit 47, generates a ringing sound by the sounder 37, and at the same time, causes the vibrator 21 to vibrate or without generating a ringing sound. 21 vibrations. The operation unit 38 includes ten keys and various keys required for wireless communication. For example, when the dial number of the call partner is input using the numeric keypad, the dial number according to the input is displayed on the screen of the display unit 54 in response to the input. Here, the display unit 54 includes, for example, an LCD that performs dot matrix display, an LCD driver, and the like.
[0019]
The coaxial connector 1 is provided between the antenna 40 and the antenna switch 39, and the measuring circuit 20 for performing the performance test of the wireless communication circuit of the wireless device is connected to the pin jack 22 via the coaxial cable 23. Can be connected. Note that the antenna 40 is not attached at the stage when the wireless device is manufactured and the performance test is performed by the measurement circuit 20.
[0020]
That is, FIG. 8 shows a wireless device in a stage where a performance test is performed by the measurement circuit 20. FIG. 8 shows a state where the back cover of the housing of the wireless device is removed. The radio section 31, the modem section 32 and the like are covered by the shield case 24. A printed wiring board 4 is provided for mounting the electronic components such as the radio unit 31 and the circle drawn by a dashed line including a configuration for connecting the antenna 40 and the pin jack 22 is enlarged. Like one.
[0021]
The upper left end of the printed wiring board 4 protrudes in the direction of the antenna 40 to be attached. A tongue-shaped terminal 61 extending from the bottom of the cylindrical antenna 40 is provided with a screw 62 in front of this protruding portion. A screw hole 25 to be attached is formed. Around the screw hole 25, a square antenna feeding pattern 2 having a circular central portion is formed corresponding to the terminal. The antenna feeding pattern 2 is composed of a pattern 2-1 2-2, 2-3 obtained by vertically dividing a square having a circular central portion into two parts, and bisecting the divided lower pattern into two parts. Is done. The method of dividing the antenna feed pattern 2 is not limited to the above, and it is generally sufficient that the antenna feed pattern 2 is divided into a large number around the screw hole 25.
[0022]
A second pattern 3 couples one of the patterns 2-1 to 2-3 constituting the antenna feeding pattern 2 to the coaxial connector 1. The coaxial connector 1 is provided on a first pattern 11 connected to a wireless communication circuit including a wireless unit 31.
[0023]
When a wireless device having a printed wiring board configured as described above is manufactured and a performance test of a circuit for wireless communication is performed, the pin jack 22 connected to the measurement circuit 20 via the coaxial cable 23 is connected. It is inserted into the coaxial connector 1 to obtain an electrical connection with the first pattern 11. The pin jack 22 is provided with a small cylindrical connecting portion 27 into which the pin 1A (FIG. 10) of the coaxial cable 23 is inserted at a central portion in the cylindrical outer case shown in FIGS. The front end and inside of the case and the outside of the small cylindrical connecting portion 27 serve as a ground side connecting portion 28. On the other hand, as shown in FIG. 10, the coaxial connector 1 includes a receiving portion 1B of a ground-side connection portion 28 made of a concave metal and a pin 1A for signal derivation. The ground connection portion 28 is grounded at a predetermined position on the printed wiring board 4. Further, an earth pattern 5 is formed on the printed wiring board 4.
[0024]
When a wireless device having the above-described printed wiring board is manufactured and a performance test of a circuit for wireless communication is performed, as shown in FIGS. Is inserted into the coaxial connector 1 to obtain an electrical connection with the first pattern 11. Then, various tests are performed such as whether a signal of a predetermined frequency is transmitted from the measurement circuit 20 and the wireless device performs an incoming call operation, or whether transmission from the wireless device is performed at a predetermined frequency. At this time, one pattern 2-3 constituting the antenna feeding pattern 2 is connected via the second pattern 3, but since the pattern 2-3 is a small piece, the reactance component is small and the appropriate test can be executed. It is possible. Conversely, the pattern (2-3 in this embodiment) connected to the second pattern 3 has only a reactance component that does not hinder measurement in the case of measurement by the measurement circuit 20. .
[0025]
When the performance test is completed and it is confirmed that the wireless device operates normally, the pin jack 22 is removed from the coaxial connector 1, and the screw 62 is inserted into the screw hole 25 through the hole of the terminal 61 extending from the antenna 40. The antenna 40 is coupled to the printed wiring board 4 by screwing. As a result, all of the separated patterns 2-1 to 2-3 are connected by the terminal 61, an appropriate electrical connection is obtained, and a wireless device capable of performing wireless communication accurately is measured after the circuit is measured. Can be completed without soldering work.
[0026]
FIG. 2 shows a second embodiment of the printed wiring board. In this embodiment, a coil 6 is connected between the second pattern 3 and the ground pattern 5 in the embodiment of FIG. This embodiment is effective for canceling out the case where one pattern 2-3 and the second pattern 3 constituting the antenna feeding pattern 2 in the first embodiment have capacitive reactance. , The performance test by the measurement circuit 20 can be appropriately performed.
[0027]
FIG. 3 shows a third embodiment of the printed wiring board. In this embodiment, a capacitor 7 is connected between the second pattern 3 and the ground pattern 5 as compared with the embodiment of FIG. This embodiment is effective for canceling out the case where one pattern 2-3 and the second pattern 3 constituting the antenna feeding pattern 2 in the first embodiment have inductive reactance. , The performance test by the measurement circuit 20 can be appropriately performed.
[0028]
FIG. 4 shows a fourth embodiment of the printed wiring board. In this embodiment, the third pattern 8 is connected between the second pattern 3 and the ground pattern 5 in the embodiment of FIG. The third pattern 8 has a zigzag shape and has an inductive reactance as shown in FIG. This embodiment is effective for canceling out the case where one pattern 2-3 and the second pattern 3 constituting the antenna feeding pattern 2 in the first embodiment have capacitive reactance. , The performance test by the measurement circuit 20 can be appropriately performed.
[0029]
FIG. 5 shows a fifth embodiment of the printed wiring board. In this embodiment, the shape of the pattern forming the antenna feed pattern 2 is changed from the embodiment of FIG. The antenna feeding pattern 2 is composed of a pattern 2-4 obtained by cutting off the pattern connected to the second pattern 3 of the square pattern obtained by cutting out the center of the square pattern, and the remaining pattern 2-5. . Since the pattern 2-4 is connected to the second pattern 3, it is as if the second pattern 3 is extended to a portion where the terminal 61 of the antenna 40 is located.
[0030]
In the fifth embodiment as well, one pattern 2-4 constituting the antenna feeding pattern 2 is connected to the coaxial connector 1 via the second pattern 3, but the pattern 2-4 is a small piece. Therefore, an appropriate test can be performed with a small reactance component. As shown in FIGS. 2 to 4, a coil 6, a capacitor 7, or a third pattern 8 may be provided in the fifth embodiment to cancel the reactance component.
[0031]
FIG. 6 shows a sixth embodiment. In this embodiment, the patterns 2-1 and 2-2 constituting the antenna feeding pattern 2 are removed from the configuration of the embodiment of FIG. In this configuration, since the terminal 61 of the antenna 40 comes into contact with the antenna feed pattern 2 only at the portion of the pattern 2-3, the contact stability is slightly inferior, but the same effect as the embodiment of FIG. 1 can be obtained. .
[0032]
FIG. 7 shows a seventh embodiment. In this embodiment, a pattern 2-5 forming the antenna feeding pattern 2 is removed from the configuration of the embodiment of FIG. In this configuration, since the terminal 61 of the antenna 40 contacts the antenna feed pattern 2 only at the pattern 2-4, the contact stability is slightly inferior, but the same effect as the embodiment of FIG. 5 can be obtained. .
[0033]
As shown in FIGS. 2 to 4, a coil 6, a capacitor 7, or a third pattern 8 is provided in the sixth and seventh embodiments to cancel the reactance component. You may do it.
[0036]
【The invention's effect】
As described above, according to the first aspect of the present invention, the area of the pattern forming the antenna feeding pattern is large enough to be in contact with a part of the connection surface of the terminal extending from the antenna. Is merely connected to the coaxial connector, so the reactance component is smaller than before, making it possible to perform a suitable test even when connecting a measurement circuit to the coaxial connector and performing a performance test of a circuit for wireless communication. I do. In addition, the first pattern constituting the antenna feed pattern and the coaxial connector are connected by the second pattern, so that soldering after measurement is not required, and the work flow can be improved and productivity can be improved. Can be. In addition, when the antenna is coupled to the printed wiring board with the screw hole, the antenna terminal comes into contact with the antenna feed pattern formed by dividing a large number of portions around the screw hole, and the antenna and the wireless communication circuit are connected. Can be reliably conducted.
[0040]
As described above, according to the second aspect of the present invention, since the wireless device is provided with the printed wiring board of the first aspect , when the wireless device is manufactured, it is affected by the reactance of the antenna power supply pattern. In addition, it is possible to appropriately perform a performance test, and it is not necessary to perform a soldering operation after a performance test of a circuit for wireless communication, thereby improving a work flow and improving productivity.
[Brief description of the drawings]
FIG. 1 is a main part configuration diagram of a printed wiring board according to a first embodiment of the present invention.
FIG. 2 is a main part configuration diagram of a printed wiring board according to a second embodiment of the present invention.
FIG. 3 is a main part configuration diagram of a printed wiring board according to a third embodiment of the present invention.
FIG. 4 is a main part configuration diagram of a printed wiring board according to a fourth embodiment of the present invention.
FIG. 5 is a main part configuration diagram of a printed wiring board according to a fifth embodiment of the present invention.
FIG. 6 is a main part configuration diagram of a printed wiring board according to a sixth embodiment of the present invention.
FIG. 7 is a main part configuration diagram of a printed wiring board according to a seventh embodiment of the present invention.
FIG. 8 is an exploded perspective view of a wireless device including the printed wiring board of the present invention.
FIG. 9 is a perspective view of a pin jack connected to the wireless device of the present invention.
FIG. 10 is a cross-sectional view of a connection state between a coaxial connector and a pin jack provided on a printed wiring board of the present invention.
FIG. 11 is a configuration diagram of a wireless device including the printed wiring board of the present invention.
FIG. 12 is a configuration diagram of a main part of a conventional printed wiring board.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 coaxial connector 2 antenna feeding pattern 3 third pattern 4 printed wiring board 5 ground pattern 6 coil 7 capacitor 8 third pattern 11 first pattern 20 measuring circuit 22 pin jack 23 coaxial cable 24 shield case 25 screw hole 31 wireless Unit 32 modem unit 33 TDMA unit 34 communication unit 40 antenna 61 terminal 62 screw

Claims (2)

A first pattern for connecting to a circuit for wireless communication;
A screw hole for coupling a terminal extending from the antenna,
An antenna power supply pattern comprising a plurality of patterns that are arranged by being divided into a large number around the screw hole and are in contact with a part of a connection surface of a terminal extending from the antenna, respectively.
A coaxial connector for connecting a coaxial cable to the first pattern is arranged,
A printed wiring board, wherein a portion from one of a plurality of patterns constituting the antenna feeding pattern to the coaxial connector is connected by a second pattern. A printed wiring board according to claim 1,
Antenna and
A wireless device comprising: a circuit for wireless communication.

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