JP2007005908A - Wireless communication apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance communication sensitivity while satisfying the specification of SAR. <P>SOLUTION: The wireless communication apparatus 1 has a body communication apparatus 2, and a sub-communication apparatus 3 independent from the body communication apparatus 2. The body communication apparatus 2 has a body side reception antenna 7 for exclusively receiving a radio signal outputted from an external communication partner, and a body side transmission antenna 13 for exclusively transmitting a signal by radio. The sub-communication apparatus 3 has a sub-side reception antenna 15 for receiving a signal transmitted from the body side transmission antenna 13 by radio, a sub-side communication section for producing a signal having a raised signal level by amplifying a received signal, and a sub-side transmission antenna 21 for transmitting a produced signal by radio toward the external communication partner. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wireless communication apparatus such as a mobile phone.

  FIG. 5A shows a model diagram of an example of a mobile phone that is one of the wireless communication devices, and FIG. 5B shows a main internal configuration example related to communication of the mobile phone. It is shown by a block diagram. The mobile phone 30 includes an antenna 31 for wireless communication, a receiving unit 32 that converts a signal received by the antenna 31 into a signal processing signal form, a baseband unit 33 that performs signal processing, and a baseband A transmission unit that converts the signal for transmission output from the unit 33 into a signal form for wireless communication and wirelessly transmits the signal to the outside via the antenna 31.

Japanese Patent Laid-Open No. 10-41720

  As shown in FIG. 5C, the mobile phone 30 is arranged on the side of the head during a call. During a call, a signal (electromagnetic wave) for wireless communication is output from the antenna 31 of the mobile phone 30, and the signal output from the antenna 31 is a wireless communication partner (for example, a base of a wireless telephone communication system). A signal level (signal strength) capable of wireless communication with a station.

  Since such a signal having a signal level capable of performing wireless communication with a base station, for example, is output from the antenna 31, the arrangement position of the antenna 31 is set to satisfy the SAR (Specific-Absorption-Rate) regulations. Be constrained. For this reason, the antenna 31 may not be provided at an optimal position where a high antenna gain can be obtained, which may cause a problem that improvement of the wireless communication performance of the mobile phone 30 is hindered.

  The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a wireless communication apparatus that can improve wireless communication performance while satisfying the SAR regulations.

In order to achieve the above object, the present invention has the following configuration as means for solving the above problems. That is, this invention has a main body communication device and a sub communication device independent of the main body communication device,
The main body communication device includes a main body side receiving antenna that receives a radio signal output from an external communication partner, a receiving unit that converts a signal received by the main body side receiving antenna into a signal for signal processing, and a communication A transmission unit that creates and outputs a signal for use, and a main body side transmission antenna that wirelessly transmits the signal output from the transmission unit,
The sub-communication device includes a sub-side receiving antenna that receives a signal wirelessly transmitted from the main body-side transmitting antenna, and a sub-signal that generates a signal with a higher signal level by amplifying the signal received by the sub-side receiving antenna. A side communication unit and a sub-side transmission antenna that wirelessly transmits a signal generated by the sub-side communication unit to an external communication partner are provided.

  In the wireless communication device of the present invention, the main body communication device and a sub communication device that is separate from the main body communication device are configured, and the main body communication device receives a signal output from an external communication partner, A signal to be transmitted from the main body communication device to an external communication partner is once output to the sub communication device, and after the signal level is amplified by the sub communication device, the signal can be output from the sub communication device to the communication partner. The configuration. In this configuration, the level of the signal transmitted from the main body communication device may be a signal level that can be received by, for example, the sub communication device in the same room, and may be an external wireless communication partner (for example, a wireless communication system). The signal level need not be high enough to reach the base station. For example, when the main body communication device and the sub-communication device form a set and function as a mobile phone, the main body communication device has a configuration in which a microphone and a speaker for calling are provided. Is placed beside the person's head during a call. Further, the sub communication device can be arranged at a location away from the head. In such a case, a signal with a high signal level to the base station is transmitted from the sub communication device located away from the head, and such a signal is transmitted from the main body communication device arranged on the side of the head. There is no need to output a high level transmission signal.

  As described above, the main body communication device does not need to output a signal having a high signal level, so that the main body communication device easily satisfies the SAR regulations. In addition, since the sub communication device can be placed away from the head, it is possible to determine the arrangement position of the sub-side transmitting antenna with little concern about the SAR regulations. For this reason, the sub-side transmitting antenna can be provided in a portion of an appropriate sub-communication device that can obtain a high antenna gain, and the transmission performance of the wireless communication device of the present invention can be improved.

  In the present invention, since the transmitting antenna and the receiving antenna are provided separately and independently, it is easy to ensure isolation between the transmitting-side signal and the receiving-side signal. In addition, when dual-purpose antennas are provided for transmission and reception, if the frequency band of the signal for transmission and the frequency band of the signal for reception are close, there is concern about mutual interference between the transmission signal and the reception signal. In contrast, it is difficult to perform transmission and reception operations at the same time. In the present invention, since a transmission antenna and a reception antenna are provided separately, the frequency band of the transmission signal and the reception are received. Even if the frequency band of the signal for use is close, it is possible to simultaneously perform transmission and reception operations while avoiding mutual signal interference. Thereby, the efficiency of wireless communication can be improved.

  Furthermore, the distance between the main body communication device and an external communication partner is short, and even when a low-level transmission signal is output from the main body communication device, the external communication partner can receive the transmission signal. is there. In such a case, it is possible to perform wireless communication with an external communication partner directly from the main body communication device without going through the sub communication device. In addition, the length of the distance between the main body communication device and an external communication partner can be estimated by the level of the signal level of the reception signal of the main body receiving antenna. It is possible to determine whether direct communication with the other party is possible.

  From these, a threshold of the received signal level for determining whether or not direct communication between the main body communication device and the external communication partner is possible is obtained in advance by experiments or the like. Is given in advance as a signal level for sub-side off determination. When the received signal level of the main body communication device is equal to or higher than the sub-side off determination signal level, the low-level transmission of the main body communication device because the distance between the external communication partner and the main body communication device is short. Even with a signal, it can be determined that direct wireless communication between the main body communication device and an external communication partner is possible. When direct wireless communication is possible between the main unit communication device and an external communication partner, even if the circuit operation of the sub communication device is suspended, it does not hinder wireless communication with the external communication partner. . From this, when it is detected that the level of the received signal of the main body communication device is equal to or higher than the sub-side off determination signal level, the power saving of the sub-communication device is provided by providing a configuration that pauses the circuit operation of the sub-communication device. Can be achieved. When the sub-communication device is a device that is driven using, for example, a battery power source, the life of the battery can be extended.

  The main body side reception antenna is a reception antenna common to a plurality of predetermined radio communication systems, and the sub-side transmission antenna is a transmission antenna common to all the radio communication systems. By providing the above-described configuration, it is possible to cope with radio communication of a plurality of radio communication systems while suppressing an increase in the number of reception antennas and transmission antennas.

  By adopting a configuration in which signal communication between the main body communication device and the sub communication device is performed by wire, occurrence of a problem due to a signal (electromagnetic wave) wirelessly transmitted from the main body communication device can be avoided. Further, the reliability of signal communication between the main body communication device and the sub communication device can be improved.

  Embodiments according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a model diagram showing an example of the wireless communication apparatus of the first embodiment, and FIG. 2 is a block diagram showing a main internal configuration example related to the wireless communication of the wireless communication apparatus of FIG. ing.

  The wireless communication device 1 according to the first embodiment includes a main body communication device 2 and a sub communication device 3 that is independent from the main body communication device 2. The main body communication device 2 and the sub communication device 3 form a set. It is a portable phone that functions in the same manner. In the first embodiment, the main body communication device 2 is provided with a speaker 4 and a microphone 5 for a telephone call with an interval. 2, the main body communication device 2 includes a main body side reception antenna 7, an LNA (low noise amplifier) 8, a reception unit 9, a baseband unit 10, a transmission unit 11, and a PA ( Power amplifier) 12 and a main body side transmitting antenna 13. The sub-communication device 3 has a sub-side receiving antenna 15, a sub-side communication unit 20 having a receiving unit 16, a baseband unit 17, a transmitting unit 18, and a PA (power amplifier) 19, and a sub-side transmitting unit. The antenna 21 is configured.

  The main body side reception antenna 7 is a reception-only antenna that receives a radio signal (radio wave) output from the base station 22 of the radio communication system of the mobile phone that is an external communication partner. In the first embodiment, the main body side reception antenna 7 is an appropriate part of the main body communication apparatus 2 (for example, the speaker 4 of the main body communication apparatus 2) that can satisfactorily receive a signal from the base station 22 during a call. Side end).

  The receiving unit 9 includes a circuit that converts a received signal received by the main body-side receiving antenna 7 and input via the LNA 8 into a signal processing signal and outputs the signal to the baseband unit 10. The baseband unit 10 includes a circuit that processes a signal input from the receiving unit 9 according to a predetermined method. Further, the baseband unit 10 includes a circuit that, when a signal desired to be transmitted to the outside is added from the communication control unit side, for example, performs signal processing on the signal according to a predetermined method and outputs the signal to the transmission unit 11. The transmitter 11 has a circuit that converts the signal into a signal for wireless communication and outputs the signal. The PA 12 is an amplifier that increases the level of the signal output from the transmission unit 11 and outputs the signal toward the main body side transmission antenna 13. The main body side transmission antenna 13 is a transmission-dedicated antenna that wirelessly transmits a supplied signal. In the first embodiment, the main body side transmission antenna 13 is arranged at the position farthest from the head of the person in the main body communication device 2 during a call, and on the microphone 5 side of the main body communication device 2. Is provided at the end.

  The sub-side receiving antenna 15 of the sub-communication device 3 receives a signal wirelessly transmitted from the main body-side transmitting antenna 13. In the first embodiment, the method of wireless communication between the main body side transmission antenna 13 of the main body communication device 2 and the sub side reception antenna 15 of the sub communication device 3 is not particularly limited. However, for example, when it is assumed that the main body communication device 2 and the sub communication device 3 are arranged close to each other, for example, in the same room, the main body communication device 2 and the sub communication device 3 As a wireless communication technique between the two, for example, a wireless communication technique using weak radio waves according to the Bluetooth standard can be cited.

  The receiving unit 16 of the sub-side communication unit 20 includes a circuit that converts a signal received by the sub-side receiving antenna 15 into a signal for signal processing. The baseband unit 17 includes a circuit that performs signal processing on the signal output from the receiving unit 16 according to a predetermined technique and outputs the signal after the signal processing to the transmitting unit 18. The transmission unit 18 includes a circuit that converts the supplied signal into a signal for wireless communication. The PA 19 has a circuit that amplifies the signal output from the transmission unit 18 and outputs a signal whose signal level is increased toward the sub-side transmission antenna 21. The sub-side transmitting antenna 21 wirelessly transmits the signal output from the PA 19 to an external communication partner (for example, a base station) 22.

  In the first embodiment, the main body communication device 2 and the sub communication device 3 form a set and function as a portable telephone, and the distance between the main body communication device 2 and the sub communication device 3 is the same, for example. The distance is assumed to be indoors. For this reason, the distance between the main body side transmission antenna 13 of the main body communication device 2 and the sub side reception antenna 15 of the sub communication device 3 is equal to the sub side transmission antenna 21 and the base station that is the external communication partner. It is much shorter than the distance between the two. Therefore, the level of the signal output from the main body side transmission antenna 13 toward the sub side reception antenna 15 may be lower than the level of the signal wirelessly transmitted from the sub side transmission antenna 21 to the outside. . Therefore, in the first embodiment, the PA 12 of the main body communication device 2 has a maximum output power saturation power smaller than the maximum output power saturation power of the PA 19 of the sub communication device 3. Thereby, the transmission signal wirelessly transmitted from the main body side transmission antenna 13 is weaker than the transmission signal wirelessly transmitted from the sub-side transmission antenna 21.

  The wireless communication device 1 according to the first embodiment is configured as described above. In the configuration of the first embodiment, the main body communication device 2 receives a signal from the external communication partner 22. A signal that the main body communication device 2 wants to transmit to the external communication partner 22 is once wirelessly transmitted to the sub-communication device 3 with a low-level radio signal (weak radio signal). Is amplified and transmitted from the sub-communication device 3 to the external communication partner 22 by radio.

  The second embodiment will be described below. In the description of the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and duplicate descriptions of common portions are omitted.

  In the second embodiment, the mobile phone 1 in which the main body communication device 2 and the sub communication device 3 function as a set can support a plurality of predetermined wireless communication systems. The configuration is as follows. That is, in the second embodiment, as shown in the block configuration diagram of FIG. 3, in the main body communication device 2, the receiving unit 9 includes a plurality of units respectively corresponding to a plurality of predetermined wireless communication systems. Receiver circuits 25A and 25B.

  All of the receiving circuits 25A and 25B are connected to the main body side receiving antenna 7 via the diplexer 24 in common. In other words, the main body side reception antenna 7 is a reception antenna common to all the wireless communication systems. Each of the wireless communication systems performs signal wireless communication in a separate frequency band for wireless communication. Therefore, the diplexer 24 has a circuit configuration that separates the signal received by the main body side reception antenna 7 for each signal of each wireless communication system by utilizing the difference in the frequency band of the signal of each wireless communication system. I have. The signal output unit for each wireless communication system of the diplexer 24 is connected to the corresponding receiving circuit 25A, 25B for the wireless communication system via the LNA 8 (8a, 8b), respectively. Each of the receiving circuits 25A and 25B has a circuit configuration for converting a received signal supplied from the main body side receiving antenna 7 side into a signal for signal processing. The signal output units of the receiving circuits 25A and 25B are connected to the baseband unit 10, respectively.

  The transmission unit 11 includes a plurality of transmission circuits 26A and 26B that correspond respectively to the plurality of wireless communication systems. Each of the transmission circuits 26A and 26B has a circuit configuration for converting a signal added from the baseband unit 10 into a signal for wireless communication suitable for the corresponding wireless communication system. Each of the transmission circuits 26A and 26B is connected to the diplexer 27 via a separate PA 12 (12a and 12b). The diplexer 27 has a circuit configuration in which the signals output from the transmission circuits 26A and 26B are combined into one signal and output toward the main body side transmission antenna 13. In the second embodiment, a plurality of transmission circuits 26A and 26B for each wireless communication system are connected in common to the main body side transmission antenna 13 via a diplexer 27.

  In the sub-communication device 3 as well, the receiving unit 16 includes a plurality of receiving circuits 36A and 36B for each wireless communication system, and each receiving circuit 36A and 36B includes a diplexer 37, respectively. Via the sub-side receiving antenna 15. Similarly to the diplexer 24, the diplexer 37 uses a difference in signal frequency band for each radio communication system to separate the received signal from the main body side transmission antenna 13 into a signal for each radio communication system. It has. The signal output unit for each wireless communication system of the diplexer 37 is connected to the receiving circuit 36A, 36B for the corresponding wireless communication system via separate LNAs 38A, 38B, respectively. Each of the receiving circuits 36A and 36B has a circuit configuration for converting a signal supplied from the sub-side receiving antenna 15 side into a signal for signal processing.

  The transmission unit 18 includes a plurality of transmission circuits 40A and 40B for each wireless communication system, and each of the transmission circuits 40A and 40B transmits a sub-side transmission via a PA 19 (19a and 19b) and a diplexer 41, respectively. Commonly connected to the trusted antenna 21. Similar to the diplexer 27 of the main body communication device 2, the diplexer 41 has a circuit configuration in which signals output from the transmission circuits 40 </ b> A and 40 </ b> B are combined and output to the sub-side transmission antenna 21. The sub-side transmitting antenna 21 is a transmitting antenna common to all the radio communication systems.

  Other configurations of the portable phone of the second embodiment are the same as those of the first embodiment.

  The third embodiment will be described below. In the description of the third embodiment, the same components as those in the first and second embodiments are denoted by the same reference numerals, and a duplicate description of the common portions is omitted.

  In the third embodiment, wireless communication between the main body communication device 2 and the sub communication device 3 is a standard for wireless communication between the main body communication device 2 or the sub communication device 3 and the external communication partner 22. And the same wireless communication standard. However, the signal level of the wireless communication between the main body communication device 2 and the sub communication device 3 is the signal of the wireless communication between the sub communication device 3 and the external communication partner 22 as in the first embodiment. It is lower than the level.

  In the third embodiment, the main body communication device 2 is wirelessly transmitted from the main body side transmission antenna 13 of the main body communication device 2 close to the external communication partner (base station of the wireless communication system of the mobile phone) 22. When the base station 22 can receive even a weak transmission signal, the circuit operation of the sub-communication device 3 can be suspended to save power in the sub-communication device 3 as shown below. It has.

  That is, in the third embodiment, as shown in FIG. 4, the control device 42 provided in the main body communication device 2 includes a sub-side suspension control unit 45 and a memory (storage device) 46. The sub-side suspension control unit 45 includes a capturing unit 47, a comparison unit 48, and a suspension control unit 49. Further, the control device 43 provided in the sub-communication device 3 includes the operation suspension unit 50.

  A signal level for sub-side off determination is stored in advance in the memory 46 of the control device 42 of the main body communication device 2. The sub-side off determination signal level is a threshold value for determining whether or not to stop the circuit operation of the sub communication device 3. That is, when the level of the signal received by the main body side reception antenna 7 of the main body communication device 2 is high (when the signal is strong), it can be estimated that the distance to the communication partner (base station) 22 is short. . When the distance to the communication partner 22 is short, the communication partner 22 can receive a low-level transmission signal output from the main body side transmission antenna 13 of the main body communication device 2 and wireless communication with the communication partner 22 is possible. It may become. From this, the distance between the communication partner (base station) 22 is short due to the level of the reception signal of the main body side reception antenna 7, and the main body side transmission antenna 13 of the main body communication device 2 and the communication partner 22 It is possible to determine whether or not direct wireless communication is possible between them, and thereby whether or not to stop the circuit operation of the sub-communication device 3 can be determined. As a result, the signal level of the received signal of the main body side receiving antenna 7 which is a threshold value for the determination is obtained in advance by experiments or the like, and the obtained signal level is preliminarily stored in the memory 46 as the sub side off determination signal level. Stored in

  The capturing unit 47 of the sub-side pause control unit 45 has a configuration for capturing a part of the reception signal received by the main body-side receiving antenna 7 every moment. The comparison unit 48 detects the signal level of the reception signal captured by the capture unit 47, reads out the sub-side off determination signal level stored in advance in the memory 46, and determines the signal level of the detected reception signal. Compare with the signal level for sub-off determination. The comparison result is output from the comparison unit 48 to the pause command unit 49. When the pause command unit 49 detects that the signal level of the received signal is equal to or higher than the sub-side off determination signal level based on the comparison result of the comparison unit 48, the pause command unit 49 starts from the main body side transmission antenna 13 of the main body communication device 2. It is determined that the communication partner 22 can receive the wirelessly transmitted signal and that direct wireless communication between the main body communication device 2 and the communication partner 22 can be performed, and an operation suspension signal is wirelessly transmitted to the sub communication device 3. Send.

  When receiving the operation pause signal from the main body communication device 2 side, the operation pause unit 50 of the control device 43 of the sub communication device 3 pauses the circuit operation of the sub side communication unit 20 of the sub communication device 3. As one of the methods for pausing the circuit operation of the sub-side communication unit 20, for example, the following method can be considered. For example, power supply for performing on / off control of power supply from the power source 51 to the sub-side communication unit 20 in a passage for supplying power from the power source (for example, battery) 51 of the sub-communication device 3 to the sub-side communication unit 20 On / off control means 52 is provided. The operation pause unit 50 outputs a power supply stop signal to the power supply on / off control means 52 when the circuit operation of the sub-side communication unit 20 is paused, and receives this signal to supply power supply on / off control means. 52 stops the power supply to the sub-side communication unit 20. In this way, the circuit operation of the sub-side communication unit 20 can be paused.

  The control device 43 of the sub communication device 3 is provided with an operation suspension canceling unit (not shown). For example, the operation suspension canceling unit confirms that direct wireless communication between the main body communication device 2 and the communication partner 22 is difficult based on, for example, signal level information of the received signal supplied from the main body communication device 2 side. When detected, the operation pause unit 50 is configured to cancel the pause state of the circuit operation of the sub-side communication unit 20.

  The fourth embodiment will be described below. In the description of the fourth embodiment, the same components as those in the first to third embodiments are denoted by the same reference numerals, and redundant description of the common portions is omitted.

  In the fourth embodiment, instead of providing the main body side transmission antenna 13 of the main body communication device 2 and the sub side reception antenna 15 of the sub communication device 3, the main body communication device 2 and the sub communication device 3 are provided. Wired connection means for making a wired connection between the two. There are various configurations of the wired connection means, and any configuration may be adopted here, and the description thereof is omitted. In addition, configurations other than the above-described configuration in the fourth embodiment are the same as those in the first or second embodiment, and redundant description thereof is omitted here.

  In addition, this invention is not limited to the form of each 1st-4th embodiment, Various embodiment can be taken. For example, in addition to the configurations of the first to third embodiments, the following configurations may be provided. For example, the main body side receiving antenna 7, the main body side transmitting antenna 13, the sub side receiving antenna 15, and the sub side transmitting antenna 21 can each be configured to perform wireless communication of signals in the same frequency band. Make it. The sub-communication device 3 has a configuration capable of signal processing a received signal from the communication partner 22. By having such a configuration, the sub communication device 3 receives a signal from the communication partner (base station) 22 by the sub-side receiving antenna 15 and sends the received signal from the sub-side transmitting antenna 21 to the main body communication device. It can be transmitted to the second side.

  In addition, the main body communication device 2 is a signal wirelessly transmitted from the sub communication device 3 to the base station 22, whether the signal received by the main body side reception antenna 7 is a signal transmitted from the base station 22. It is set as the structure which has a means for identifying whether it is.

  By providing such a configuration, the main body communication apparatus 2 can receive the signal received by the main body side reception antenna 7 directly from an external communication partner even if the sensitivity of the sub side reception antenna 15 of the sub communication apparatus 3 is poor. However, since the same signal is received and the received signal is transmitted from the sub communication device 3 side to the main body communication device 2 side via the sub side transmission antenna 21 and the main body side reception antenna 15, the sub side of the sub communication device 3 The signal received by the receiving antenna 15 can cover the poor reception sensitivity of the main body-side receiving antenna 7. In the configuration of the mobile phone 1 shown in each of the first to third embodiments, the main body communication device 2 is arranged on the side of the person's head to perform a call. 2 cannot greatly change the direction of the main body side receiving antenna 7, but the sub communication device 3 can easily change the direction so that the receiving sensitivity of the sub side receiving antenna 15 is improved. it can. For this reason, providing the structure which can cover the bad reception sensitivity of the main body communication apparatus 2 with the received signal of the sub communication apparatus 3 as mentioned above is very effective for improvement of the reception sensitivity.

  Furthermore, in addition to the configurations of the first and second embodiments, the following configurations may be provided. For example, as shown in the third embodiment, it has a configuration for determining that a signal transmitted wirelessly from the main body side transmitting antenna 13 of the main body communication device 2 can be received by the communication partner 22, and When it is determined by the configuration that the communication partner 22 can receive the transmission signal of the main body side transmission antenna 13, both the sub-side transmission antenna 21 and the main body side transmission antenna 13 transmit signals to the communication partner 22. In addition, both the main body side reception antenna 7 and the sub-side reception antenna 15 are used as antennas for receiving signals from the communication partner 22, and MIMO (Multiple-Input-Multiple-Output) is used. ) A configuration for performing communication is provided. By providing a configuration capable of performing MIMO communication in this way, wireless communication efficiency can be improved.

  Furthermore, in each of the first to fourth embodiments, the cellular phone has been described as an example. However, the wireless communication device of the present invention can be applied to a wireless communication device other than the cellular phone. Furthermore, in the second embodiment, the configuration was able to support two radio communication systems. For example, the receiving unit 9 of the main body communication device 2 corresponds to three or more different radio communication systems, respectively. And the transmission unit 18 of the sub-communication device 3 has a configuration in which the transmission unit 18 includes three or more transmission circuits respectively corresponding to three or more different wireless communication systems. In addition, a configuration capable of supporting three or more wireless communication systems may be provided.

It is a model figure for demonstrating the example of an external appearance of the radio | wireless communication apparatus of the example of 1st Embodiment. It is a block block diagram for demonstrating the example of main internal structures of the radio | wireless communication apparatus of 1st Embodiment. It is a block block diagram for demonstrating the example of main internal structures of the radio | wireless communication apparatus of 2nd Example. It is a block block diagram for demonstrating the structural example characteristic in the example of 3rd Embodiment. It is a model figure for demonstrating one of the subjects of the conventional radio | wireless communication apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile telephone 2 Main body communication apparatus 3 Sub communication apparatus 7 Main body side receiving antenna 9 Receiving part 11 Transmitting part 13 Main body side transmitting antenna 15 Sub side receiving antenna 20 Sub side communication part 21 Sub side transmitting antenna 45 Sub side Pause control unit 50 Operation pause unit

Claims (5)

A main body communication device and a sub communication device independent of the main body communication device;
The main body communication device includes a main body side receiving antenna that receives a radio signal output from an external communication partner, a receiving unit that converts a signal received by the main body side receiving antenna into a signal for signal processing, and a communication A transmission unit that creates and outputs a signal for use, and a main body side transmission antenna that wirelessly transmits the signal output from the transmission unit,
The sub-communication device includes a sub-side receiving antenna that receives a signal wirelessly transmitted from the main body-side transmitting antenna, and a sub-signal that generates a signal with a higher signal level by amplifying the signal received by the sub-side receiving antenna. A wireless communication apparatus, comprising: a side communication unit; and a sub-side transmission antenna that wirelessly transmits a signal generated by the sub-side communication unit toward an external communication partner.   The reception signal of the main body side reception antenna is captured, the signal level of the reception signal is compared with a predetermined sub-side off determination signal level, and the signal level of the reception signal is equal to or higher than the sub-side off determination signal level. A sub-side pause control unit that outputs an operation pause signal to the sub-communication device is determined, and the sub-side communication device receives the operation pause signal and performs circuit operation of the sub-side communication device. An operation pause unit for stopping is provided, and a signal wirelessly transmitted from the main body side transmission antenna of the main body communication device is externally communicated while the sub side communication unit of the sub communication device is paused by the sub side pause control unit. The wireless communication apparatus according to claim 1, wherein the wireless communication apparatus receives the communication and performs wireless communication with the communication partner. The reception unit of the main body communication device has a plurality of reception circuits corresponding respectively to a plurality of predetermined wireless communication systems, and the sub-side communication unit of the sub communication device is provided for each of the wireless communication systems. It has multiple communication circuits that correspond separately,
The main body side receiving antenna is connected in common to all the receiving circuits of the receiving unit of the main body communication device and is configured as a receiving antenna common to all the radio communication systems, and the sub side transmitting antenna of the sub communication device is The transmission antenna common to all signal communication units of all communication circuits of the sub-side communication unit of the sub-communication device is formed as a common transmission antenna. 2. The wireless communication device according to 2.   The main body communication device and the sub-communication device are each portable devices, and the main body communication device is provided with a microphone and a speaker for a telephone call with an interval, and the main body side communication antenna of the main body communication device The wireless communication device according to claim 1, wherein the wireless communication device is disposed at an end of the main body communication device on the microphone side.   Instead of providing the main body side transmission antenna and the sub side reception antenna, a wired connection means for connecting the transmission unit of the main body communication device and the sub side communication unit of the sub communication device by wire is provided. The signal output from the transmission unit of the device is input to the sub-side communication unit of the sub-communication device via the wired connection means, and the signal is amplified by the sub-side communication unit to increase the signal level and to the sub-side transmission antenna. 4. The wireless communication apparatus according to claim 1 or 3, wherein the wireless communication apparatus outputs the data as described above.

Images