JPWO2006033183A1 - Antenna auxiliary device and antenna device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antenna auxiliary device and an antenna device which can be installed in an optimal state even with a directional antenna and are not difficult to connect to a mobile communication device. SOLUTION: Sensitivity data indicating a radio wave reception state is received from a USB port of a mobile phone 2, a control main body 71 for outputting a display signal corresponding to the sensitivity data as a TTL serial signal, and a display received from the control main body 71 Based on the signal, the LED group 72d adjacent to the parabolic antennas PB and PB2 includes an indicator unit 72 that displays the radio wave reception status of the mobile communication device.

Description

  The present invention relates to an antenna auxiliary device capable of installing an antenna so that a reception sensitivity level of a mobile phone can be displayed and radio waves can be transmitted and received in an optimum state.

  There is a remarkable spread of mobile phones in recent years, and many people including elementary school students and the elderly use mobile phones beneficially. Communication carriers provide mobile communication services in the 800 MHz band, 1.5 GHz band, and 2 GHz band.

  However, since mobile phones use microwave band communication, the service area of the base station of the mobile communication network is limited. For example, in high-rise buildings and high-rise apartments, communication tends to be interrupted, There were problems such as being unable to use. According to some survey results, about 37% of 83,147,000 subscribers are said to feel “very dissatisfied with communication status” or “a little dissatisfied with communication status”. Yes.

  In order to individually solve the problem of poor communication, a measure for attaching an external antenna to the mobile phone may be taken. This external antenna is generally classified into a directional antenna and an omnidirectional antenna, but the omnidirectional antenna is (a) the reception state is easily influenced by external factors, and (b) the antenna gain is compared to the directional antenna. There are shortcomings such as inferior compared to the above, and (c) low-rise apartments are less effective.

  On the other hand, since the directional antenna has a high antenna gain, it is effective even in a high-rise apartment or the like, and has a great advantage that it can be used even when displayed as an out-of-service area on a mobile phone.

  However, the directional antenna has a drawback that due to its directivity, the antenna gain at the corner cannot be utilized unless it exactly matches the radio wave reception direction. In general, since the cable derived from the directional antenna is hard and thick, there is a problem that the cable cannot be connected to a mobile phone in practice.

  The present invention has been made in view of the above problems, and an antenna auxiliary device that can be installed in an optimum state even with a directional antenna and has no difficulty in connection with a mobile communication device, and An object is to provide an antenna device.

  To achieve the above object, the antenna auxiliary device according to the first invention (Claim 1) receives sensitivity data indicating a radio wave reception state from a mobile communication device, and outputs a display signal corresponding to the sensitivity data. And a display control unit for displaying a radio wave reception state of the mobile communication device on a display unit close to the antenna main unit based on a display signal received from the control main unit.

  The antenna device according to the present invention is preferably configured such that an antenna assembly in which the antenna main body portion includes a pair of antennas including a directional antenna and the pair of antennas are electrically connected is the antenna auxiliary device. It is configured in combination with. In the present invention, the mobile communication device is typically a mobile phone. The antenna body is preferably a pair of directional antennas, but is not limited to this and may be an omnidirectional antenna.

  As a second invention, the antenna auxiliary device receives sensitivity data indicating a radio wave reception state from a mobile communication device, and outputs a superimposed signal including the sensitivity data and a DC voltage to a single communication cable. A main body, and a display controller that displays the radio wave reception status of the mobile communication device on the display close to the antenna main body based on the sensitivity data included in the superimposed signal received from the communication cable It may be. In such a case, the antenna main body is preferably a composite antenna formed by combining a directional antenna and an omnidirectional antenna.

  Here, the omnidirectional antenna means that the transmission / reception characteristics do not change anywhere in the same plane, and does not mean that there is no directivity at all. The directional antenna is preferably a planar antenna or a parabolic antenna in which a conductor film is provided on the front and back surfaces of a planar dielectric, and the omnidirectional antenna is simply a dipole antenna.

  The display control unit according to the second invention is preferably provided with a data extraction circuit for extracting sensitivity data from the superimposed signal. The display control unit preferably extracts a DC voltage from the superimposed signal as its power supply voltage, and the superimposed signal further includes an antenna signal to be transmitted / received from the mobile communication device. It is effective that the display control unit transfers the antenna signal received from the communication cable to the antenna main body.

  Also, a repeater antenna configured by connecting a directional antenna and an omnidirectional antenna, a display control unit that receives sensitivity data indicating a radio wave reception state from a mobile communication device, and displays a level corresponding to the sensitivity data; An antenna device provided with is also suitable.

  The sensitivity data in each of the above inventions is preferably index data indicating a received power index value of the mobile communication device. Here, the received power index value is typically (a) desired signal received power RSCP (Received Signal Code Power) for evaluating the strength of radio waves received from each base station, and (b) desired signal per chip. Energy / pair / in-band received power density ratio (Ec / No), (c) desired signal received power / pair / interference signal power ratio SIR (signal interference ratio), etc. Absent.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is a directional antenna, the antenna auxiliary | assistant apparatus and antenna apparatus which can be installed in an optimal state and are not difficult when connecting with a mobile communication apparatus are realizable. As a result, according to the present invention, clear communication can be realized without interruption even in places where mobile communication is originally difficult.

  Hereinafter, the present invention will be described in detail based on examples. FIG. 1 is a block diagram illustrating an overall configuration of an antenna device SYS that can be installed so that radio wave reception sensitivity of a mobile phone is displayed in a level and can transmit and receive radio waves in an optimum state.

  The antenna device SYS is integrated with the antenna body 1 that transmits and receives radio waves to and from the base station of the mobile communication network, the control body 3 that is connected to the external connection terminal 2a of the mobile phone 2, and the antenna body 1. The display control unit 4 displays the radio wave reception level of the mobile phone 2.

  In this antenna device SYS, since a commercially available general-purpose product is used as the mobile phone 2, the control main body 3 receives a DC voltage from the charging AC adapter 5 attached to the commercially available mobile phone 2 and uses it as its power supply voltage. At the same time, the received DC voltage is supplied to the mobile phone 2 and the display control unit 4.

  The control main body 3 and the display control unit 4 are connected by a coaxial cable 6, and the antenna signal, the serial signal processed by the display control unit 4, and the power supply voltage of the display control unit 4 are superimposed through the coaxial cable 6. Are transmitted. Here, the antenna signal includes a transmission wave supplied from the mobile phone 1 to the antenna body 1 and a reception wave supplied from the antenna body 1 to the mobile phone 2.

  In general, commercially available mobile phones 2 are roughly classified into a CDMA (Code Division Multiple Access) system and a TDMA (Time Division Multiple Access) system, and the external terminals 2a and internal circuits are different from each other. In this embodiment, the TMDA system is used. PDC mobile phones that operate in PDC (Personal Digital Cellular) is a digital wireless communication system that uses a frequency band of 800 MHz / 1.5 GHz with a bandwidth of a voice signal of 5.6 kbps at a half rate and 11.2 kbps at a full rate.

  As shown in the figure, the control main unit 3 includes a signal voltage generation circuit 7 that generates a serial signal supplied to the display control unit 4 and a high-frequency blocking filter 8 that blocks an antenna signal from entering. In this embodiment, since the charging AC adapter attached to the mobile phone is used as the AC adapter 5 that steps down and rectifies the AC voltage, the power supply connector 3b corresponding to the charging AC adapter is provided. ing. Moreover, it has the connector 3a corresponding to the composite cable 9 connected to the external connection terminal 2a of a mobile phone.

  FIG. 2A illustrates a schematic configuration of the external connection terminal 2a of the mobile phone. As illustrated, signal terminals from terminal numbers 1 to 16 are provided, and antenna terminals ANT are provided at both ends thereof. FIG. 2B shows the use of each connection terminal. Although not shown, a charging terminal for supplying a charging voltage to the mobile phone 2 is also provided.

  The composite cable 9 is a cable that collectively connects the signal terminal of the mobile phone, the antenna terminal ANT, and the charging terminal to the connector 3 a of the control main body 3. As shown in FIG. 2A, the antenna terminal ANT of this embodiment is separated into a transmitting antenna terminal and a receiving antenna terminal. In the control main body 3, one is connected to a terminating resistor r. At the same time, only the other side is connected to the antenna body 1 to operate normally.

  The composite cable 9 supplies a charging voltage from the control main body 3 to the mobile phone 2 and transmits a “downward serial signal” from the mobile phone 2 to the control main body 3. The composite cable 9 connects the two antenna terminals of the mobile phone 2 to the control main body 3. One antenna terminal is connected to the coaxial cable 6 through the coupling capacitor C1, and the other antenna terminal is terminated with a termination resistor r.

  The “downlink serial signal” is a signal transmitted from the mobile phone 2 to the control main unit 3 in order to indicate the operation state of the mobile phone 2, and the “downlink serial signal” includes an 8-bit configuration “1- Reception level data of “1-0-0-L3-L2-L1-L0” is included. Actually, a serial signal of 11 bits in total is obtained by adding an L-level start bit ST, an H-level stop bit SP, and an even parity bit P to 8-bit reception level data (FIG. 2). (See (c)).

  The reception level data expressed by such a serial signal indicates the reception strength of the antenna signal received by the mobile phone 2 (through the composite cable 9). As shown in FIG. Shown in 16 stages. That is, the mobile phone 2 displays its own reception level in 16 levels from the highest level (1111) to the lowest level (0000), and displays the lower 4 bits (L3-L2-L1-L0) of the reception level data. Output using. The reception level data is automatically output from the cellular phone 2 every 200 to 300 mS when no other downstream serial signal is output.

  FIG. 3 is a block diagram showing the control main body 3 in detail. As shown in the figure, the high frequency blocking filter 8 is constituted by a coil L having a high impedance with respect to the antenna signal. Note that the circuit configuration of the high-frequency blocking filter 8 is not particularly limited as long as it prevents the antenna signal from wrapping around, and an appropriate circuit is selected.

  The signal voltage generation circuit 7 includes a computer circuit composed of a CPU 15, a ROM 16, and a RAM 17, a serial input port 18 that receives a downstream serial signal output from the mobile phone 2, and a lighting signal generated by the CPU for the display control unit. A serial output port 19 that outputs the voltage, a DC / DC converter 20 that boosts the DC voltage received from the charging AC adapter 5, and an adder circuit 21 that analog-adds the outputs of the serial output port 19 and the DC / DC converter 20. It consists of Note that the DC / DC converter 20 may be omitted. In this case, the DC voltage received from the charging AC adapter 5 is directly supplied to the adding circuit 21.

  In this embodiment, both the serial input port 18 and the serial output port 19 use a UART (Universal Asynchronous Receiver Transmitter) having the same configuration. The UART has signal terminals such as TxD (Transmit Data), RxD (Receive Data), RTS (Request To Send), and CTS (Clear To Send). In this embodiment, the external connection terminal 2a of the mobile phone is used. The downstream serial signal is supplied to the RxD terminal of the serial input port 18, and the TxD terminal of the serial output port 19 is connected to the input terminal of the adder circuit 21.

  As described with reference to FIG. 2 (c), the cellular phone 2 periodically outputs the reception level data of the bit configuration “1-1-0-0-L3-L2-L1-L0” every 200 to 300 mS. ing. On the other hand, the serial input port 18 is set to generate a reception completion interrupt to the CPU 15 every time reception of an 8-bit downlink serial signal is completed. Then, the CPU 15 performs pattern matching processing in the interrupt processing routine activated by the reception completion interrupt, and outputs this to the serial output port 19 only when the upper 4 bits are “1100”.

  FIG. 4 is a flowchart showing the processing contents of the CPU 15. When a reception completion interrupt occurs, the CPU performs a register saving process (PUSH process) (ST1), and then acquires a downstream serial signal from the serial input port 18 and stores it in the buffer area of the RAM 17 (ST2).

  Then, the upper 4 bits of the serial signal are checked to determine whether it is “1100” (ST3). If the bit patterns do not match, the saved register is restored (POP process), and the interrupt process is terminated (ST5). On the other hand, if the bit pattern of the upper 4 bits matches “1100”, the 8-bit reception level data is output as it is to the serial output port 19 (ST4), and after the POP process (ST5), the interrupt process is performed. Finish.

  FIG. 4A shows a main routine corresponding to the interrupt processing routine. After the power is turned on, the CPU 15 performs initial processing of the serial ports 18 and 19 (ST10), and then performs steady processing in an infinite loop (ST11). As the steady process, an appropriate process based on the downlink serial signal stored in the buffer area of the RAM 17 may be performed, but this steady process may be omitted. When the regular process is omitted, a reception completion interrupt is generated for the CPU 15 that is indefinitely repeating the infinite loop process, and the process of FIG. 4B is executed.

In any case, a serial signal indicating the radio wave reception level of the mobile phone 2 is constantly output from the serial output port 19 to the adder circuit 21. On the other hand, a DC voltage obtained by boosting a mobile phone charging voltage is constantly output from the DC / DC converter 20 to the adder circuit 21. Therefore, the adder circuit 21 outputs a serial signal whose DC voltage level is shifted to the plus side. FIG. 3 shows that the threshold of the digital level is V _TH for the serial signal output from the adder circuit 21. Such a serial signal passes through the coil L serving as the high-frequency blocking filter 8, is superimposed on the antenna signal, and is output to the coaxial cable 6 as a superimposed signal.

  As shown in FIG. 1, the display control unit 4 includes a high frequency blocking filter 10, a voltage comparison circuit 11, a stabilized power supply circuit 12, a central control unit 13 that is a computer circuit, and an LED display unit 14. Yes. Further, the display control unit 4 transmits the superimposed signal received from the coaxial cable 6 to the antenna body 1 through the coupling capacitor C2.

  The central control unit 13 of the display control unit 4 includes a serial input port 13a, a CPU 13b, and a driver circuit 13c that drives an LED lamp. The serial input port 13a is specifically a UART, and the digital output of the voltage comparison circuit 11 is supplied to the RxD terminal. Moreover, the LED display part 14 is specifically comprised by 15 LED lamps arranged in a line.

  The high-frequency blocking filter 10 includes a coil L similar to that shown in FIG. The stabilized power supply circuit 12 is configured by a three-terminal regulator IC or the like, and receives the input voltage Vin and generates the power supply voltage Vcc of the central control unit 13. Here, the input voltage Vin is substantially the same as the output of the adder circuit 21 of the control body 3, and the serial signal output from the serial output port 19 and the DC voltage output from the DC / DC converter 20 are superimposed. Signal (see FIG. 3).

The voltage comparison circuit 11 is specifically composed of a comparator, compares the level of the reference voltage _VTH with the input voltage Vin, and outputs an H level digital signal if Vin> _VTH , and Vin ≦ If V _{TH, an} L level digital signal is output. As described above, since the input voltage Vin is substantially the same as the output of the adder circuit 21 of the control main unit 3, the voltage comparison circuit 11 receives the reception level data of the mobile phone output from the serial output port 19. Will be output. The reception level data is supplied to the CPU 13 b of the central control unit 13 through the serial input port 13 a of the central control unit 13.

  The CPU 13b of the central control unit 13 generates a drive signal for the LED lamp based on the lower 4 bits (L3-L2-L1-L0) of the reception level data of the mobile phone, and displays the LED display via the driver circuit 13c. To the unit 14. Since all 15 LED lamps are turned on when the reception radio wave level of the mobile phone is the highest, and all LED lamps are turned off when the reception radio wave level of the mobile phone is the lowest, the LED display section 14 functions as a level meter in which the number of lighting changes according to the level of the received radio wave.

  As described above, the control main unit 3 receives the downlink serial signal indicating the received radio wave level from the mobile phone 2 and transmits it constantly to the display control unit 4. On the other hand, the display control unit 4 turns on the number of LED lamps corresponding to the received serial signal. Therefore, when the antenna body 1 is attached to a window glass or the like of the room, the attachment position and orientation of the antenna body 1 can be adjusted while observing the LED display unit 14 that is lit in 15 stages, so that the optimal radio wave reception state Can be obtained. Moreover, since it is not necessary to carry the mobile phone 2 during the mounting operation, the operation is extremely easy.

  As described above, in the embodiment of FIG. 1, the case of using the PDC mobile phone 2 has been described. However, a CDMA mobile phone can be used with substantially the same circuit configuration. However, since the external connection terminal of the CDMA mobile phone conforms to a USB (Universal Serial Bus) port, the composite cable 9 has a format corresponding to this. Further, by transmitting an AT command from the control main unit 3 to the mobile phone 2 and receiving a result code from the mobile phone 2, the received radio wave level of the mobile phone 2 is grasped.

  The AT (Attention) command originally means a command set for controlling a modem, which was released by Hayes Microcomputer Products in 1981. , NTT-DoCoMo FOMA). In the cellular phone, the received radio wave level can be obtained in 76 steps from 0 to 75. This is divided into 15 parts by the control main unit 3 and transmitted to the display control unit 4 having the same configuration as in FIG. 1, and the LED lamp is turned on. Let That is, the antenna device SYS of FIG. 1 can be applied to a CDMA mobile phone only by modifying the program of the control main body 3 and the composite cable 9.

  In the antenna device SYS of FIG. 1, the cellular phone 2 and the antenna body 1 are connected via the coaxial cable 6 (via the control body 3 and the display controller 4). Are not necessarily connected by a cable, and the antenna body 1 and the mobile phone 2 may be connected via a repeater antenna.

  FIG. 5 is a circuit configuration diagram using the repeater antenna 1A. In the case of the antenna device SYS of FIG. 1, the antenna signal is transmitted via the wired path of the mobile phone 2⇔control main body 3⇔coaxial cable 6⇔display control unit 4⇔antenna main body 1, but the device of FIG. Then, such a wired path does not exist, and transmission is performed via the wireless path of the mobile phone 2⇔ repeater antenna 1A.

  The repeater antenna 1A includes a planar antenna (patch antenna) 30 and a dipole antenna 31. FIG. 5 shows a state in which the repeater antenna 1A is fixed to the glass window by suckers 32 and 32. The display control unit 4 is fixed in the vicinity of the dipole antenna 31, and the LED display unit 14 appears outside.

  In general, the planar antenna 30 has strong directivity in the direction orthogonal to the radio wave transmission / reception surface 51 (FIG. 8A) (see FIG. 7B). On the other hand, the dipole antenna 31 connected to the planar antenna 30 with a coaxial cable has uniform directivity within the same horizontal plane (see FIG. 7C). Thus, in this embodiment, the planar antenna 30 communicates with the base station, while the dipole antenna 31 communicates with the mobile phone 2. In the present specification, the antenna is referred to as an omnidirectional antenna including a case of uniform directivity on the same horizontal plane as shown in FIG.

  6 is a front view (a), a right side view (b), and a plan view (c) of the repeater antenna 1A. FIG. 7 is a perspective view of the repeater antenna 1A. Since the control display unit 4 does not necessarily have to be integrated with the repeater antenna 1A, the control display unit 4 is not shown in FIGS.

  As shown in FIG. 6, the repeater antenna 1 </ b> A includes a planar antenna 30, a dipole antenna 31, a mounting arm 33 that holds the suction cup 32, an annular guide bar 34 that can rotate and tilt the planar antenna 30, and a dipole antenna. It is comprised centering on the mounting box 35 which penetrates 31. FIG.

  Specifically, the annular guide bar 34 is composed of a pair of hollow pipes 34A and 34B arranged in two upper and lower stages, and a coaxial cable for connecting the planar antenna 30 and the dipole antenna 31 is accommodated therein. ing. This coaxial cable is connected to the feeding point of the dipole antenna inside the mounting box 35.

  Cylindrical protrusions 30a and 30a are provided outward in the width direction at the center of the planar antenna 30 in the length direction. In addition, a mounting box 35 is provided at the center in the length direction of the dipole antenna 31, and a pair of annular guide bars 34 </ b> A and 34 </ b> B are extended from the mounting box 35 in a direction orthogonal to the dipole antenna 31. The two upper and lower annular guide bars 34A and 34B gently sandwich the cylindrical protrusions 30a and 30a of the planar antenna 30.

  The suction cups 32, 32 are usually attached to the indoor side IN of the window glass GA (FIG. 6B). A connecting portion 36 that connects the mounting arm 33 and the planar antenna 30 is provided on the back side of the mounting arm 33 that holds the suction cup 32. Specifically, the connecting portion 36 is integrally formed of a base plate 36a fixed to the mounting arm 33, a connecting shaft 36b protruding from the base plate 36a, and a sphere 36c fixed to the tip of the connecting shaft 36b. ing.

  On the other hand, an engaging portion 37 is fixed to the central portion of the planar antenna 30 so as to face the connecting portion 36. A hemispherical receiving hole 38 corresponding to the outer periphery of the sphere 36 c is formed in the engaging portion 37, and the sphere 36 c is pushed into the receiving hole 38. Here, the sphere 36c and the receiving hole 38 are loosely engaged with each other so as to be movable.

  As described above, the cylindrical protrusions 30 a and 30 a of the planar antenna 30 are gently sandwiched between the annular guide rods 34. Therefore, the planar antenna 30 can be rotated in the horizontal plane along the annular guide rods 34A and 34B (see the arrow in FIG. 6C).

  Further, the receiving hole 38 of the planar antenna 30 is gently engaged with the sphere 36c of the connecting portion 36. Therefore, the planar antenna 30 can be rotated with the sphere 36c as the center point while being constrained by the cylindrical protrusions 30a and 30a (see the arrow in FIG. 6B), and the mounting posture can be changed almost freely after all. . Although the orthogonal relationship between the planar antenna 30 and the mounting arm 33 cannot be changed, if the mounting arm 33 is tilted and attached to the glass window GA, the planar antenna 30 can be tilted freely.

  FIG. 8A illustrates a schematic plan view of an example of the planar antenna 30, and FIG. 8B is a cross-sectional view taken along the line AA. The illustrated planar antenna 30 is formed in a vertically long rectangular shape as a whole, and conductor films 51 and 52 are provided on the front and back surfaces of the dielectric 50. The conductor film 51 on the front side is directed outdoors.

  The conductor film 51 on the front side has an appropriate shape that can provide an antenna gain, but may be simply a planar shape as illustrated. This also applies to the conductor film 52 on the back surface side, and in the illustrated example, the planar shape covers almost the entire back surface. Moreover, although the suitable thing is employ | adopted as the dielectric material 50, the structure which uses a printed circuit board (glass epoxy board | substrate) as the dielectric material 50, and provides copper foil on the front and back is employ | adopted simply.

  In any case, the connection terminal 53 of the coaxial cable is attached through the dielectric 50. Then, the core wire of the coaxial cable is connected to the conductor film 51 on the front surface side, and the shield line of the coaxial cable is connected to the conductor film 52 on the back surface side.

  Such a planar antenna 30 has directivity in a direction perpendicular to the transmission / reception surface of the conductor film 51 on the front surface side. Therefore, although it is necessary to adjust the mounting posture toward the base station of the mobile phone, the planar antenna 30 of this embodiment can be rotated and tilted on the horizontal plane, so that the mounting posture can be easily adjusted. It is. In addition, since the received radio wave level in 15 steps is displayed on the LED display unit 14 of the display control unit 4, an optimal radio wave receiving state can be established.

  In adjusting the mounting orientation of the antenna, it is preferable to integrate the display control unit 4 and the planar antenna 1A (see FIG. 5). It is preferable that the control unit 4 and the planar antenna 1A are configured to be separable and separated from each other after the planar antenna 1A is adjusted.

  FIG. 9 illustrates the simplest antenna device. In this embodiment, an antenna device is configured by a repeater antenna 1A similar to FIG. 7 and a display control unit 70 attached to an external connection terminal of the mobile phone 2. The display control unit 70 includes a computer circuit composed of a CPU 60, a ROM 61, and a RAM 62, a serial input port 63 that receives a downlink serial signal from a mobile phone, and a drive according to a received radio wave level that is grasped based on the downlink serial signal. The driving unit 64 outputs a signal, and the LED display unit 65 is turned on in 15 steps.

  The display control unit 70 has a built-in battery, and a power supply unit 66 for increasing / decreasing the voltage of the battery is provided as necessary. Even in this apparatus, the repeater antenna 1A can be installed in the optimum state by working while viewing the lighting state of the display control unit 65.

  Although the three embodiments have been specifically described above, the specific description content does not particularly limit the present invention. For example, the display control unit 70 shown in FIG. 9 has a built-in battery, but the display control unit 70 is not necessary after the antenna body is attached. The DC voltage from the charging AC adapter may be used.

  By the way, in a mobile phone, radio waves are transmitted and received through a base station that shows an optimal reception state among a plurality of base stations. However, the received radio waves are weak in areas far from the base station or near the base station, such as high-rise floors of buildings, and the call may be impossible or the call may be interrupted due to interference between the direct wave and the reflected wave. . In order to eliminate such a communication abnormality, it is preferable to use a parabolic antenna having a higher directivity than using a planar antenna as in the previous embodiment.

  10 and 11 are external views illustrating an antenna device SYS according to the fourth embodiment, which uses a parabolic antenna PB1 facing the outdoor side and a parabolic antenna PB2 facing the indoor side. The antenna device SYS is roughly divided into a reference pole PO (antenna auxiliary device) standing from a base BS and an antenna assembly 73. The antenna assembly 73 is electrically configured by connecting two parabolic antennas (antenna main body portions) PB1 and PB2 with a coaxial cable.

  The reference pole PO includes a control main body 71 that receives index data (RSCP in this embodiment) indicating a received power index value from the mobile phone 2, and an indicator unit that indicates sensitivity data (index data RSCP) in the lighting state of the LED group. 72 is built in. The control main body 71 is covered with a pair of column covers 74A and 74B. The control main body 71 and the indicator 72 are connected by a wiring cable accommodated in the base pole 75.

  In this antenna device SYS, the mobile phone 2 is connected to the control main body 71 when adjusting the mounting posture of the parabolic antenna, and is otherwise separated from the control main body 71 except during the charging operation of the mobile phone. . The indicator unit 72 displays sensitivity data as a level only when the mobile phone 2 is connected to the control main unit 71.

  In this embodiment, the first antenna PB1 directed to the outdoor side and the second antenna PB2 directed to the indoor side are connected to form a repeater antenna, and the parabolic antennas PB1 and PB2 can be set in a free posture. It is configured. The parabolic antenna originally has a sharp directivity, but in this embodiment, the mounting posture can be freely changed. Therefore, the first antenna PB1 selectively selects only the desired wave from the mobile phone base station. Can be re-radiated toward the mobile phone 2 on the indoor side by the second antenna PB2. That is, in this embodiment, since the first antenna directed toward the direction of arrival of the desired wave can increase the reception sensitivity of the desired wave, the ratio of the desired wave is increased in the received radio wave of the mobile phone including the interference wave. As a result, the call becomes stable.

  FIG. 12 is a block diagram showing an internal configuration of the control main body 71. As shown in the figure, the control main body 71 is connected to the USB port of the mobile phone 2 through the first connector CN1 and is connected to the indicator unit 72 through the second connector CN2. The control main body 71 includes a one-chip microcomputer 71a that centrally controls the operation of each part of the device, a USB master controller 71b connected to the USB port of the mobile phone 2, and an AC voltage or a DC voltage to receive a rectifying operation and A power supply unit 71c that generates a power supply voltage + 5v by a stabilization operation and a switching unit 71d that receives a charging voltage for a mobile phone from the power supply unit 71c are mainly configured. The switching unit 71d is an ON / OFF switch circuit that operates in response to a control signal from the one-chip microcomputer 71a. The one-chip microcomputer 71a operates the switching unit 71d to turn on when the mobile phone 2 requires a charging voltage. A charging voltage is supplied to the mobile phone 2.

  The one-chip microcomputer 71a communicates with the mobile phone 2 through the USB master controller 71b and the USB port every predetermined time, and grasps the radio wave reception level of the mobile phone 2 at that time. The grasped radio wave reception level is converted into a TTL serial signal and output to the indicator unit 72. Note that the one-chip microcomputer 71a also periodically grasps whether the voltage value of the rechargeable battery mounted on the mobile phone 2 is insufficient.

  FIG. 13A is a circuit diagram showing the indicator unit 72, and FIG. 13B is an external view of the indicator unit 72. As shown in FIG. 13A, the indicator unit 72 receives the serial data SD, the clock signal CK, the address signals AD1, AD2, the control signal CTR, and the DC voltage of + 5V from the control main body 71 (one-chip microcomputer 71a). is recieving. And 32 LED lamps P1-P32 are turned on or off based on these signals. Note that the two LED lamps P1 and P2 are indicators indicating “during measurement of radio wave intensity by the mobile phone” and “insufficient battery of the mobile phone”, and the remaining LED lamps P3 to P32 function as level meters.

  In the present embodiment, the indicator unit 72 is designed to operate on the condition that the mobile phone 2 is connected to the control main body unit 71. Therefore, when the mobile phone 2 is separated from the control main body 71, the above signals are not supplied from the control main body 71, and all the LED lamps P1 to P32 are turned off. However, in order to use the device SYS as an interior of the room, the LED lamp may be appropriately blinked to exhibit the illumination function in a non-connected state with the mobile phone 2.

  In any case, the indicator unit 72 receives the 2-bit address signals AD1 and AD2 and outputs the 4-bit chip select signals CS1 to CS4 and the clock signal CK based on the chip select signals CS1 to CS4. The NAND gate group 72b and the serial data SD are commonly received, and the shift register group 72c that selectively receives the divided clock signals CK1 to CK4, and the output data of the shift register group 72c are turned on / off. 4x8 LED lamp groups 72d and a switch circuit 72e that controls ON / OFF control of a power supply voltage (+ 5V = Vcc) received from the control main body 71 by a control signal CTR. .

  FIG. 14 is a time chart for explaining the operation of the indicator unit 72. As shown in the figure, for example, when the address signals AD1, AD2 are switched as 00 → 01 → 10 → 11 → 00..., The output of the address decoder 72a is Y level only at Y0 → L level only at Y1. → Y2 only L level → Y3 only L level → Y0 only L level... (See FIG. 14D).

  Therefore, when serial data SD is supplied in a state where any of the shift registers SR1 to SR4 is selected by the address signals AD1 and AD2, the serial data SD is transmitted to the active shift register SRi and converted into parallel data. . Therefore, when the control main body 71 that has finished the process of grasping the received power index value based on the communication with the mobile phone 2 sends the serial data SD of a total of 32 bits at the timing shown in FIG. 14, 8 × 4 bits of serial data SD is sequentially acquired by the shift registers SR1 to SR4, and the LED lamp group 72d is driven by the parallel data outputs P1 to P32 of the shift registers SR1 to SR4.

  As described above, the LED lamp P <b> 1 indicates that “the radio wave reception level is being measured”. Therefore, when all the LED lamps P3 to P32 are turned off, if the LED lamp P1 is turned on, it means that the received radio wave level of the desired wave is extremely low, and conversely, the LED lamp P1 is also turned off. If it is, it means that the device is not powered on.

  11 and 15 (an exploded perspective view of FIG. 11), the antenna assembly 73 includes a pair of parabore antennas PB and PB, a holding arm 76 formed by bending a hollow pipe, and a holding arm 76. The movable portions 77 and 77 connect the parabolic antennas to both ends of the antenna, and the connecting portion 78 that holds the central portion of the holding arm 76 and is connected to the base pole 75. Two decorative screws 79, 80 are screwed into the connecting portion 78, and when the decorative screw 79 is loosened, the connecting portion 78 can be moved up and down along with the base pole 75 together with the holding arm 76 and the like. . On the other hand, when the decorative screw 80 is loosened, the holding arm 76 can be rotated with the connecting portion 78 as the rotation center. The base pole 75 is formed upright from the base BS.

FIGS. 16 and 17 individually show four adjusters 78a, 78b, 78c, and 78d (adjusters A to D) that are components of the connecting portion 78. FIG. FIG. 18 shows an assembled state of each adjuster, and FIG. 19 is an enlarged view of a part of FIG. As shown in FIGS. 18 and 19, the adjuster C78c and adjuster D78d are integrated by bolts BT1 which screwed through the adjuster C78c, a first connecting portion _{78 -1} substantially cylindrical. The adjuster C78c and the adjuster D78d are assembled with the base pole 75 interposed therebetween, but the inner diameter of the central first opening HO1 is slightly larger than the outer diameter of the base pole 75, so that the adjuster C78c and the adjuster D78d can be raised and lowered freely along the base pole 75. Can do. Then, at an appropriate position, the first opening HO1 When the decorative screw 79 screwed is reduced in diameter, the first connecting portion 78 _-1 is fixed to the base pole 75. Further, in the assembled state of the first coupling part 78 _-1, the axial end portion, a cylindrical second opening HO2 extending in the axial direction is formed.

On the other hand, the adjuster A78a and adjuster B78b are integrated by bolts BT2 that screwed through the adjuster A78a, a second coupling portion _{78 2.} Incidentally, the bolt BT2 is likewise hexagonal socket bolt and bolt BT1, entire bolt connection portion ₇₈ -1, is accommodated in the _{78 -2.} As a result, the second connecting portion 78 _-2, made from the large-diameter columnar body 81 and the two-stage cylindrical shape small diameter cylindrical protrusion 82 is protruded.

The adjuster A78a and the adjuster B78b are assembled with the holding arm 76 interposed therebetween, but the inner diameter of the central third opening HO3 is slightly larger than the outer diameter of the holding arm 76, so that the holding arm 76 is slightly moved in the axial direction. Can do. Therefore, central to the correctly placed in the second connecting portion _{78 -2} holding arm 76, the third opening HO3 is reduced in diameter by screwing bolts BT3 with hexagonal holes, the second coupling portion _{78 -2} Is completely integrated with the holding arm 76.

Incidentally, the outer diameter of the protruding portion 82 of the second coupling portion _{78 -2} slightly smaller than the inner diameter of the second opening HO2. Therefore, while holding the holding arm 76, the projecting portion 82 of the second coupling portion _{78 -2,} it becomes rotatable within the second opening HO2 of the first connecting portion _{78 -1.} Therefore, when the holding arm 76 is rotated with the second opening HO2 as the rotation center and the decorative screw 80 is tightened at the optimum rotation position, the positional relationship between the holding arm 76 and the base pole 75 is fixed. Note that the adjuster A78a and adjuster B78b constituting the projecting portion 82 of the second coupling portion _{78 -2,} while arcuate groove GRV extending 50 °, respectively, are formed (FIG. 16), the adjuster C78c and adjuster D78d Since the circular projections PRJ each extending 30 ° are formed in the two openings HO2 (FIG. 17), the rotation angle of the holding arm 76 is ± 20 °.

  FIG. 20A shows the movable parts 77 attached to the upper and lower ends of the holding arm 76 in an exploded state. The movable portion 77 includes an azimuth joint 83 on which the parabolic antenna PB is placed and fixed, a rotary joint 84 that rotatably holds the azimuth joint 83, an elevation angle joint 85 that is connected from both sides of the rotary joint 84, and a coupling. 86, a joint base 87 inserted into the hollow holding arm 76 and connected thereto, and "<"-shaped connecting arms 88A and 88B connecting the joint base 87 and the elevation joint 85. ing.

  Here, the elevation angle joint 85 and the coupling 86 are engaged with each other inside the rotary joint 84, and are connected by a bolt BT4 that passes through the elevation angle joint 85 and the coupling 86, and a nut NT that is screwed into the bolt BT4. Yes. The coupling 86 is covered with a screw cover 89. Further, the azimuth joint 83 is rotatably held by the bolt BT5 and the nut NT while being loosely fitted to the protruding shaft portion 84a of the rotary joint 84. Since the outer diameter of the bolt BT5 is smaller than the inner diameter of the insertion hole of the azimuth joint 83 or the rotary joint 84, the azimuth joint 83 can rotate relative to the rotary joint 84 (see, for example, FIG. 21).

  As shown in FIG. 20B, the azimuth joint 83 is provided with four through holes 83a to 83d and a recess 83e with a bottom surface dug. Here, the through hole 83a is an insertion hole that allows the bolt BT5 to pass therethrough, and the through hole 83d is an insertion hole that allows the coaxial cable CBL to pass therethrough. Further, the central through holes 83b and 83c are mounting holes for fixing the parabolic antenna PB on the orientation joint 83 (see FIG. 15).

  In the recess 83e of the azimuth joint 83, an arc recess CR extending 195 ° is formed corresponding to the position of the through hole 83a. The arc recess CR has an inner diameter corresponding to the outer diameter of the protruding shaft portion 84a, and functions as a stopper for the key KY (FIG. 23A) having an opening angle of 45 ° formed in the protruding shaft portion 84a. Therefore, the azimuth joint 83 can be rotated by ± 60 ° = {(360 ° -195 °) −45 °} / 2 with the bolt BT5 as the rotation center (see FIG. 24F).

  As shown in FIG. 15, the parabolic antenna PB includes a transmitting / receiving unit 90 that is a core wire (antenna element) of the coaxial cable CBL, a disk base unit 91 on which the core wire of the coaxial cable is erected, and a transmitter / receiver 90 that focuses on the transmitting / receiving unit 90. The reflection part 92 which forms an object surface, and the lowering part 93 which inclines and falls from the top part of the reflection part 92 are comprised as a center. The transmission / reception unit 90 is covered with a cable cover CV, and the disc-shaped base unit 91 is attached with an antenna cover 94 from the back side.

  FIG. 22 shows a part of the parabolic antenna PB in detail, and shows that the disk base portion 91, the reflecting portion 92, and the descending portion 93 are integrally formed. In addition, these members 91-93 are comprised by apply | coating a conductive paint to the surface of a synthetic resin material. A through hole 91a formed at the center of the disk base portion 91 corresponds to the through hole 83d of the directional joint 83, and the coaxial cable CBL passing through the through hole 83d protrudes from the through hole 91a (FIG. 15). ). Further, the shield mesh line SH (FIG. 22) of the coaxial cable CBL is sandwiched between the direction joint 83 and the disk base portion 91. The coaxial cable CBL is accommodated in the holding arm 76, but is led out from the opening hole 76a formed in the terminal end of the holding arm and reaches the directional joint 83 (FIG. 15). The coaxial cable CBL that has passed through the directional joint 83 and the disk base 91 is erected with its core wire 90 standing upright from the disk base 91 by a length of λ / 4. Since this antenna device SYS receives radio waves in the 2 GHz band, it is about λ / 4 = 37.5 mm.

  As shown in FIG. 22, attachment holes 91c and 91b corresponding to the through holes 83c and 83b of the direction joint 83 are formed near the through hole 91a. Then, the fixing screw inserted from the bottom surface of the direction joint 83 is screwed into the mounting holes 91 c and 91 b of the disk base portion 91, whereby the disk base portion 91 is fixed on the direction joint 83. Further, as shown in the BB sectional view of FIG. 22, two mounting holes 91d and 91e are provided near the outer periphery of the disk base. The attachment holes 91 d and 91 e are screw holes for attaching the antenna cover 94 to the back side of the disk-shaped base portion 91. The two through holes 91f and 91g adjacent to the through hole 91a at the center of the disk base 91 are mounting holes for mounting the cable cover CV, and the protruding portion of the cable cover CV is inserted.

  FIG. 23 illustrates the configuration of the rotary joint 84, the elevation joint 85, and the coupling 86, and the relationship between them is as shown in FIG. As shown in FIG. 23 (a), the rotary joint 84 is integrally formed by a mounting portion 95 that holds the direction joint 83 and a receiving portion 96 that receives a part of the elevation joint 85 and the coupling 86 and connects them. Is formed. The mounting portion 95 has a two-stage cylindrical shape as a whole, and is formed with a protruding shaft portion 84a provided with a key KY. Further, the receiving portion 96 is formed with a through hole 84 c that receives the elevation angle joint 85 and the coupling 86. An arc groove 84b having an opening angle of 270 ° (= 360−90) is formed in the opening that receives the elevation joint 85.

  As shown in FIG. 23 (b), the elevation joint 85 is integrally formed of a substantially cylindrical main body 97, a disc 98, and a substantially cylindrical protrusion 99. An engagement protrusion 85 a is formed on the circumference of the tip of the protrusion 99, and an arc protrusion 85 b with an opening angle of 90 ° is formed at the base end of the protrusion 99. And the protrusion part 99 is following the circular arc protrusion 85b, and the flat surface 85b extended in an axial direction is formed. For this reason, the toothed protrusion 85a is cut off halfway along the circumference.

  A through hole 85c is formed in the elevation joint 85 in the axial direction of the protrusion 99, and a bolt BT4 penetrating the coupling 86 and the rotary joint 84 is inserted into the through hole 85c (FIG. 20). On the other hand, a mounting hole 85d is formed in the main body portion 97 so as to be perpendicular to the through hole 85c. The bolt BT6 inserted through the connecting arm 88 passes through the mounting hole 85d (FIG. 20).

  The coupling 86 has a substantially cylindrical shape as a whole, and is configured to have a meshing groove 86a and a through hole 86c as shown in FIG. The engagement groove 86a is provided corresponding to the engagement convex portion 85a of the elevation joint 85, and accordingly, a flat surface 86b is also formed corresponding to the flat surface 85b of the elevation joint 85.

  Next, a method for assembling the rotary joint 84, the elevation joint 85, and the coupling 86 having the above-described configuration will be described. As shown in FIG. 20, the elevation angle joint 85 and the coupling 86 are inserted from both sides of the through hole 84 c of the rotary joint 84. And if the elevation angle joint 85 and the flat surfaces 85b and 86b of the coupling 86 are match | combined, the gearing convex part 85a will mesh | engage with the gearing concave groove 86a. When the bolt BT4 is inserted and the nut NT is tightened in this state, the elevation joint 85 and the coupling 86 are connected and integrated.

  In this connected state, the arc projection 85 b (opening angle 90 °) formed in the elevation angle joint 85 enters the arc groove 84 b (opening angle 270 °) of the rotary joint 84. Therefore, the rotation joint 84 can rotate by ± 90 ° = (270−90) / 2 with respect to the integrated elevation angle joint 85 and coupling 86 with the bolt BT4 as the rotation center (FIG. 24E). ).

  The rotary joint 84, the elevation angle joint 85, and the coupling 86 assembled in this way are fixed to the joint base 87 by connecting arms 88A and 88B and bolts BT6 and BT7. FIGS. 24A and 24B illustrate the configuration of the connecting arms 88A and 88B and the joint base 87. FIG.

  The joint base is provided with through holes 87a and 87b, and the connecting arms 88A. 88B is pressed and fixed by the bolt BT7. The connecting arms 88A. Since a recess GV corresponding to the outer peripheral surface of the joint base 87 is formed on the opposing surface of 88B, the positional relationship between the connecting arms 88A and 88B and the joint base 87 does not change when the bolt BT7 is tightened. The joint base 87 to which the connecting arm 88 is fixed in this way is inserted into the terminal opening of the holding arm 76 and fixed to the holding arm 76 using the through hole 87a.

  By the way, the connecting arm 88A. Between 88B, the elevation joint 85 is also gripped (FIG. 20). Then, the bolt BT6 is inserted from the connecting arm 88A, passes through the attachment hole 85d of the elevation joint 85, is led out to the connecting arm 88B, and is tightened with a nut. Here, since the mounting hole 85d is a simple cylindrical hole and only allows the bolt BT6 to pass through, the elevation joint 85 can rotate around the bolt BT6. When the nut is tightened at an appropriate rotational position, the elevation angle adjustment of the movable portion 77 can be completed (see FIG. 24D). The angle at which the elevation angle can be adjusted is limited to about ± 75 ° by another member that inhibits further rotation.

As described above, in the antenna device SYS of the fourth embodiment, the parabolic antenna PB can be adjusted to a free posture, so that it can be set in the optimum direction in which the desired wave is transmitted. Specifically, it is as follows (1) to (5). Adjustment of each unit described below is normally performed while the cellular phone 2 is connected to the control main unit 71 and the index level of the received power displayed on the indicator unit 72 is confirmed.
(1) <Height Adjustment> First, the antenna assembly 73 can be moved up and down by sliding the connecting portion 78 up and down along the base pole 75. Specifically, the height of the parabolic antenna PB1 can be adjusted from 1.3 m to 1.1 m at the longest. Therefore, for example, even in the case of a room on a higher floor and the antenna device cannot be arranged near the window, the optimum elevation angle adjustment can be performed without being disturbed by a balcony or the like.
(2) <Swing Mechanism> The antenna assembly 73 can also be rotated about ± 20 ° with the connecting portion 78 as the center of rotation. Therefore, for example, when the antenna assembly 73 is lowered by sliding the connecting portion 78, interference between the lower antenna PB2 and furniture arranged on the floor surface can be prevented. Further, even when the attitude of the upper antenna PB1 is extremely changed, interference with the indicator unit 72 and the like can be solved. Furthermore, this swing mechanism is also useful for design changes as interior.
(3) <Elevation angle adjustment> The postures of the antennas PB1 and PB2 can be individually adjusted. As shown in FIG. 24D, the elevation angle joint 85 is rotated about ± 75 ° around the bolt BT6. be able to. Since it is necessary to point the parabolic antenna PB1 in the direction of incidence of radio waves (cell phone base station), for example, it is necessary to adjust the elevation angle downward on a high floor of an apartment.
(4) <Rotation angle adjustment> Independent of the elevation angle joint, the rotation joint 84 can be rotated about ± 90 ° around the bolt BT4. Usually, the radio wave of a mobile phone is vertically polarized, but even if the angle of the polarization plane is shifted due to reflection or diffraction, the best reception state can be realized by adjusting the rotation angle.
(5) <Direction adjustment> Furthermore, the azimuth joint 83 can be rotated around the bolt BT5 by about ± 60 °. By this direction adjustment, the parabolic antenna PB1 having a sharp directivity can be directed in the optimum direction.

  Although the embodiments of the present invention have been specifically described above, the specific description is not particularly intended to limit the present invention, and various modifications can be made without departing from the spirit of the present invention.

It is a block diagram which shows the circuit structure of the antenna apparatus which concerns on 1st Example. 5 is a diagram illustrating an external connection terminal of a PDC mobile phone. It is a block diagram which shows a part of FIG. 1 in detail. It is a flowchart explaining operation | movement of the control main-body part of FIG. It is a block diagram which shows the circuit structure of the antenna apparatus which concerns on 2nd Example. It is drawing explaining a repeater antenna. It is the perspective view and directional characteristic figure which show the general view of a repeater antenna. It is drawing which shows an example of a planar antenna. It is a block diagram which shows the circuit structure of the antenna apparatus which concerns on 3rd Example. It is a perspective view which shows the antenna apparatus which concerns on 4th Example. It is a perspective view which shows the antenna apparatus of FIG. 10 from another angle. It is a block diagram which shows the circuit structure of a control main-body part. It is a block diagram which shows the circuit structure of an indicator part. It is a time chart explaining operation | movement of an indicator part. It is a perspective view which shows the decomposition | disassembly state of the antenna apparatus which concerns on 4th Example. 3 is a view showing the configuration of an adjuster A and an adjuster B. 2 is a diagram illustrating the configuration of an adjuster C and an adjuster D. It is drawing which shows the assembly state of adjusters A, B, C, and D. It is a perspective view explaining the assembly method of adjusters A, B, C, and D. It is a perspective view which shows the decomposition | disassembly state of a movable part. It is drawing explaining operation | movement of a movable part. It is drawing which shows the structure of a parabolic antenna. It is drawing which shows the structure of a rotation joint, an elevation angle joint, and a coupling. It is drawing which shows the relationship between a base pole and a connection arm.

Explanation of symbols

2 Mobile communication device (mobile phone)
3,71 Control body part 1,1A, PB1, PB2 Antenna body part 14,72d Display part (LED group)
4, 70, 72 Display control unit SYS antenna device

Claims (9)

A control main unit that receives sensitivity data indicating a radio wave reception state from a mobile communication device and outputs a display signal corresponding to the sensitivity data;
Based on the display signal received from the control main unit, a display control unit that displays the radio wave reception state of the mobile communication device on the display unit close to the antenna main unit;
An antenna auxiliary device comprising: The antenna body is composed of a pair of antennas including a directional antenna,
An antenna device configured by combining an antenna assembly in which the pair of antennas are electrically connected to the antenna auxiliary device according to claim 1. The antenna device according to claim 1, wherein the control main body and the display control unit are built in a reference pole standing from a base. The antenna assembly includes a movable part that connects an antenna to both ends of a holding arm, and a connecting part that holds a central part of the holding arm and is connected to a part of the antenna auxiliary device. Or the antenna device of 3. The antenna device according to claim 4, wherein the connecting portion is configured to be capable of adjusting the holding arm in a rotation direction. The antenna device according to claim 4, wherein the movable part includes an azimuth joint to which an antenna is fixed and a rotary joint that rotatably holds the azimuth joint. The antenna device according to claim 6, wherein the rotary joint is configured to be relatively rotatable in relation to a penetrating member penetrating the inside. The antenna device according to claim 7, wherein the penetrating member is coupled to the holding arm via a coupling arm. The antenna device according to claim 8, wherein the penetrating member is configured to be rotatable about a connection point with a connecting arm as a rotation center.