JPH0670336U - Transmitter / receiver power amplification control circuit for radio - Google Patents
Transmitter / receiver power amplification control circuit for radioInfo
- Publication number
- JPH0670336U JPH0670336U JP008843U JP884393U JPH0670336U JP H0670336 U JPH0670336 U JP H0670336U JP 008843 U JP008843 U JP 008843U JP 884393 U JP884393 U JP 884393U JP H0670336 U JPH0670336 U JP H0670336U
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- detector
- power
- reception
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
(57)【要約】
【目的】 本考案は機器の小型化と経済化の為の送受信
電力増幅制御回路の簡易化を目的としている。
【構成】 受信信号を検波し入力レベルに応じたＤＣレ
ベルを出力する事ができる検波器１３の出力と基準値を
比較し判定する機能を有する受信電力検出器１４の判定
結果によって該受信電力増幅器４及び送信信号を増幅す
る機能を有する第１送信電力増幅器１７の電源をＯＮ／
ＯＦＦする。
(57) [Abstract] [Purpose] The present invention is intended to simplify a transmission / reception power amplification control circuit for downsizing equipment and making it economical. According to a determination result of a reception power detector 14 having a function of comparing a reference value with an output of a detector 13 capable of detecting a reception signal and outputting a DC level corresponding to an input level, the reception power amplifier 4 and the power of the first transmission power amplifier 17 having the function of amplifying the transmission signal
Turn off.
Description
【０００１】[0001]
【産業上の利用分野】本考案は無線機の送信電力増幅器及び受信電力増幅器 の増幅率の制御を行う場合に、受信電界強度に応じて２段階の増幅率の設定が可 能な回路に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit capable of setting the amplification factor in two steps according to the received electric field strength when controlling the amplification factor of a transmission power amplifier and a reception power amplifier of a radio device.
【０００２】[0002]
【従来の技術】移動無線通信において使用される無線機においては、相手局 との距離が短く入力受信電界が強い場合、不必要に大きい送信電力をだせば他の 送受信機に妨害を与えたり、受信電力増幅器や周波数変換回路が相互変調歪を発 生するので望ましい事ではない。そのため最近では送信部に電力制御回路を設け 入力受信電界強度に応じて送信出力を変化できるようにしたり、受信部では入力 受信電界強度に応じて受信電力増幅器の増幅率を変化できるようにしている。2. Description of the Related Art In a radio used in mobile radio communication, if the distance from the other station is short and the input reception electric field is strong, unnecessarily large transmission power may cause interference with other transceivers. The reception power amplifier and frequency conversion circuit generate intermodulation distortion, which is not desirable. For this reason, recently, a power control circuit has been provided in the transmission section so that the transmission output can be changed according to the input reception electric field strength, and the reception section can change the amplification factor of the reception power amplifier according to the input reception electric field strength. .
【０００３】 図２は従来の送信電力制御回路の構成図で、Ｐ１INは送信機の低レベル段より の入力で、２１は所要のレベルまで電力増幅する高周波可変電力増幅器、２２は 結合器で送信出力Ｐ１OUTを送出すると共にＰ１OUTの高周波レベルを検出するに も用いられる。２２〜２５が検出と制御を行う負帰還回路部である。２３検波器 でＰ１OUTに比例したＤＣレベルを検出する。２４は誤差増幅器で送信部の制御 部より与えられる送信出力制御信号２６によって変わる基準電圧値と検波器２３ よりＤＣレベルとを比較し所要の出力レベルになるように増幅する、なお２４の 利得は大きくとること、２５は送信電力検出器で送信出力制御信号２６による基 準値と検波器よりのＤＣレベルとを比較し送信出力Ｐ１OUT が制御信号２６通り であるかどうかを判別しその結果２７を制御部に送出する。制御部はこの信号２ ７によって送信状態を知ると共にシステムに応じた制御を行う。FIG. 2 is a block diagram of a conventional transmission power control circuit. P1 IN is an input from a low level stage of a transmitter, 21 is a high frequency variable power amplifier for amplifying power to a required level, and 22 is a coupler. It is also used to send the transmission output P1 OUT and detect the high frequency level of P1 OUT . Reference numerals 22 to 25 are negative feedback circuit units that perform detection and control. 23 Detector detects DC level proportional to P1 OUT . Reference numeral 24 is an error amplifier, which compares the reference voltage value changed by the transmission output control signal 26 provided by the control unit of the transmission unit with the DC level from the detector 23, and amplifies it to a required output level. 25 is a transmission power detector, which compares the reference value of the transmission output control signal 26 with the DC level of the detector to determine whether the transmission output P1 OUT is the control signal 26 or not. To the control unit. The control section knows the transmission state by this signal 27 and controls according to the system.
【０００４】 図３は従来の受信電力増幅率制御回路の構成図で、Ｐ２INはアンテナからの入 力で、３１は所要のレベルまで電力増幅する高周波可変電力増幅器、３２は結合 器で受信電力Ｐ２OUTを送出すると共にＰ２OUTの高周波レベルを検出するにも用 いられる。３２〜３５が検出と制御を行う負帰還回路部である。３３検波器でＰ ２OUTに比例したＤＣレベルを検出する。３４は誤差増幅器で受信部の制御部よ り与えられる受信出力制御信号３６によって変わる基準電圧値と検波器３３より ＤＣレベルとを比較し所要の出力レベルになるように増幅する、なお３４の利得 は大きくとること、３５は受信電力検出器で受信電力増幅率制御信号３６による 基準値と検波器よりのＤＣレベルとを比較し受信出力Ｐ２OUT が制御信号３６通 りであるかどうかを判別しその結果３７を制御部に送出する。制御部はこの信号 ３７によって受信状態を知ると共にシステムに応じた制御を行う。FIG. 3 is a block diagram of a conventional reception power amplification factor control circuit. P2 IN is an input from an antenna, 31 is a high frequency variable power amplifier for amplifying power to a required level, and 32 is a coupler for receiving power. the need use in detecting a high frequency level of P2 OUT sends out the P2 OUT. Reference numerals 32-35 denote negative feedback circuit units that perform detection and control. The 33 detector detects a DC level proportional to P 2 OUT . Reference numeral 34 is an error amplifier, which compares the reference voltage value, which varies according to the reception output control signal 36 given by the control unit of the receiving unit, with the DC level from the detector 33, and amplifies it to a required output level. The reference numeral 35 is a reception power detector which compares the reference value by the reception power amplification factor control signal 36 with the DC level from the detector to determine whether the reception output P2 OUT is the control signal 36 or not. As a result, 37 is sent to the control unit. The control section knows the reception state by this signal 37 and controls according to the system.
【０００５】[0005]
従ってこのような回路構成では回路が複雑で小型化には不都合である。 本考案は機器の小型化及び経済化のための送信出力制御回路及び受信電力増幅 制御回路の簡易化を目的としている。 Therefore, in such a circuit configuration, the circuit is complicated and it is inconvenient for downsizing. The present invention aims at simplification of a transmission output control circuit and a reception power amplification control circuit for downsizing and cost efficiency of equipment.
【０００６】[0006]
そのため本考案では、受信電力検出器を用い 入力電力が一定値を越えたときに受信電力増幅器及び送信電力増幅器の電源を切 ることによって送信出力及び受信電力増幅を制御する事を特徴とする。 Therefore, the present invention is characterized by controlling the transmission output and the reception power amplification by using the reception power detector and turning off the power of the reception power amplifier and the transmission power amplifier when the input power exceeds a certain value.
【０００７】[0007]
上記のように構成された無線機が、固定の親局の近くに位置し、固定の親局よ り該無線機の送信出力レベルと同レベルの送信電力で該無線機に対して送信され た際、前記親局より送信された信号を検波器に入力し、前記検波器の出力が基準 値を越えた時、受信電力検出器は受信電力増幅器及び送信電力増幅器の電源をＯ ＦＦする制御信号出し該受信電力増幅器及び該第１送信電力増幅器をアッテネー タとして使用する。 The radio configured as above is located near the fixed master station, and the fixed master station transmitted to the radio at the same transmission power level as the transmission output level of the radio. At this time, when the signal transmitted from the master station is input to the detector and the output of the detector exceeds a reference value, the reception power detector controls the power supply of the reception power amplifier and the transmission power amplifier to OFF. The reception power amplifier and the first transmission power amplifier are used as attenuators.
【０００８】[0008]
次に本考案の実施例について、図面を参照して説明する。 図１は本考案を実施した送信電力制御部及び受信電力増幅制御部を備えたダブ ルスーパーへテロダイン方式移動無線機の構成例図であって、特定の送信周波数 を送信できる機能及び特定の受信周波数を受信できる機能を持つアンテナ１と、 前記アンテナ１より受信した特定の受信周波数のみを通過させる機能を持つバン ドパスフィルタ２と、前記バンドパスフィルタ２を通過した受信信号を増幅する 機能を持つ受信電力増幅器４と、前記受信電力増幅器４を通過した信号と任意の 周波数に変換するための特定の周波数を作り出す事ができる第１ローカル信号発 生器６の信号を混合する事によって任意の周波数を作り出す機能を持つ第１周波 数変換器５と、前記第１周波数変換器５によって作り出された信号より任意の周 波数のみを取り出す事ができる機能を持つバンドパスフィルタ７と、前記バンド パスフィルタ７によって取り出された信号を増幅する機能を有する増幅器８と、 前記増幅器８を通過した信号と任意の周波数に変換するための特定の周波数を発 生させる第２ローカル信号発生器１０の信号を混合する事によって任意の周波数 を作り出す機能を持つ第２周波数変換器９と、前記第２周波数変換器９によって 作り出された信号より任意の周波数のみを取り出す事ができる機能を持つバンド パスフィルタ１１と、前記バンドパスフィルタ１１によって取り出された信号を 周波数検波し周波数に応じたＤＣレベルを出力する事ができる周波数検波器１２ と、該バンドパスフィルタ１１によって取り出された信号を検波し入力レベルに 応じたＤＣレベルを出力する事ができる検波器１３と、前記検波器１３の出力と 基準値を比較し判定する機能を有する受信電力検出器１４と、前記受信電力検出 器１４の判定結果によって該受信電力増幅器４及び送信信号を増幅する機能を有 する第１送信電力増幅器１７の電源をＯＮ／ＯＦＦする機能を有する送受信電力 制御回路１５と、送信データで変調を掛け任意の送信周波数を発生させる事ので きる機能を有する送信信号発生器１６と、前記送信信号発生器１６によって作ら れた信号を該第１送信電力増幅器１７で増幅した後、送信信号を増幅する機能を 有する第２送信電力増幅器１８によって増幅された信号のみを通過させる機能を 有するバンドパスフィルタ３を通過した信号を該アンテナ１より送信することが できる無線機である。 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration example of a double super heterodyne type mobile radio device including a transmission power control unit and a reception power amplification control unit according to the present invention, which has a function of transmitting a specific transmission frequency and a specific reception An antenna 1 having a function of receiving a frequency, a bandpass filter 2 having a function of passing only a specific reception frequency received from the antenna 1, and a function of amplifying a reception signal having passed the bandpass filter 2 are provided. By mixing the received power amplifier 4 and the signal of the first local signal generator 6 capable of producing a specific frequency for converting the signal that has passed through the received power amplifier 4 with an arbitrary frequency, A first frequency converter 5 having a function of generating a frequency and only an arbitrary frequency from the signal generated by the first frequency converter 5 are taken. A bandpass filter 7 having a function capable of controlling, an amplifier 8 having a function of amplifying a signal taken out by the bandpass filter 7, and a signal for passing the signal passed through the amplifier 8 and a specific for converting to an arbitrary frequency A second frequency converter 9 having a function of generating an arbitrary frequency by mixing the signals of the second local signal generator 10 for generating the above frequency, and an arbitrary signal from the signal generated by the second frequency converter 9. A bandpass filter 11 having a function of extracting only the frequency, a frequency detector 12 capable of frequency-detecting the signal extracted by the bandpass filter 11 and outputting a DC level corresponding to the frequency, The signal extracted by the bandpass filter 11 is detected and a DC level according to the input level is output. And a reception power detector 14 having a function of comparing the output of the detection device 13 with a reference value to determine the reception power amplifier 4 and the transmission signal according to the determination result of the reception power detector 14. A transmission / reception power control circuit 15 having a function of turning on / off the power supply of the first transmission power amplifier 17 having a function of amplifying, and a transmission signal having a function of generating an arbitrary transmission frequency by modulating the transmission data. Only the signal amplified by the generator 16 and the second transmission power amplifier 18 having the function of amplifying the transmission signal after the signal generated by the transmission signal generator 16 is amplified by the first transmission power amplifier 17 The wireless device is capable of transmitting a signal, which has passed through the band pass filter 3 having a function of passing, from the antenna 1.
【０００９】 次に、上記構成においてその動作を説明する。該無線機が固定の親局の近くに 位置し、固定の親局より該無線機の送信出力レベルと同レベルの送信電力で該無 線機に対して送信された際、前記親局より送信された信号をアンテナ１で受信し 、前記アンテナ１より受信した特定の受信周波数がバンドパスフィルタ２を通過 し受信電力増幅器４によって増幅された信号と第１ローカル信号発生器６の信号 を第１周波数変換器５に入力し混合する事によって任意の周波数を作り、任意の 周波数のみをバンドパスフィルタ７を通して選択し、選択された信号を増幅器８ で増幅し、その増幅された信号と第２ローカル信号発生器１０によって発生した 信号を第２周波数変換器９に入力し、前記第２周波数変換器９によって作り出さ れた信号をバンドパスフィルタ１１を通し選別し、その信号を周波数検波１２と 検波器１３にそれぞれ入力し、前記検波器１３の出力が基準値を越えた時、受信 電力検出器１４は該受信電力増幅器４及び該第１送信電力増幅器１７の電源をＯ ＦＦする制御信号出し該受信電力増幅器４及び該第１送信電力増幅器１７をアッ テネータとして使用する。 従ってこのような動作をすることから、その効果と しては受信電力レベルが高い場合、受信電力増幅器や周波数変換回路が相互変調 歪を発生するのを防ぐ事が出来るのと同時に送信電力を下げる事が出来るので消 費電流を減らす事が出来、且つ構造が単純であるので小型化が容易である。Next, the operation of the above configuration will be described. When the wireless device is located near the fixed master station and the fixed master station transmits to the wireless device at the same transmission power level as the transmission output level of the wireless device, the master station transmits the wireless signal. The received signal is received by the antenna 1, and the specific received frequency received by the antenna 1 passes through the band pass filter 2 and is amplified by the received power amplifier 4 and the signal of the first local signal generator 6 An arbitrary frequency is created by inputting it to the frequency converter 5 and mixing it. Only an arbitrary frequency is selected through the bandpass filter 7, the selected signal is amplified by the amplifier 8, and the amplified signal and the second local The signal generated by the signal generator 10 is input to the second frequency converter 9, the signal generated by the second frequency converter 9 is filtered through a bandpass filter 11, and the signal is When input to the wave number detector 12 and the wave detector 13, respectively, and when the output of the wave detector 13 exceeds a reference value, the reception power detector 14 turns off the power of the reception power amplifier 4 and the first transmission power amplifier 17. A control signal is output to use the reception power amplifier 4 and the first transmission power amplifier 17 as an attenuator. Therefore, the effect of this operation is that when the received power level is high, it is possible to prevent the received power amplifier and frequency conversion circuit from generating intermodulation distortion, and at the same time reduce the transmitted power. Therefore, the consumption current can be reduced, and the structure is simple, so it is easy to miniaturize.
【００１０】[0010]
本考案の送受信電力増幅制御回路を使用することによって送受信電力増幅制御 を行うシステムを小型、且つ経済的に製作する事ができる。 By using the transmission / reception power amplification control circuit of the present invention, a system for performing transmission / reception power amplification control can be manufactured compactly and economically.
【図１】本考案を実施した送受信電力増幅制御部を備え
たダブルスーパーへテロダイン方式移動無線機の構成例
図である。FIG. 1 is a diagram showing a configuration example of a double super heterodyne type mobile wireless device including a transmission / reception power amplification controller according to the present invention.
【図２】 従来の送信電力制御回路の構成例図である。FIG. 2 is a diagram illustrating a configuration example of a conventional transmission power control circuit.
【図３】 従来の受信電力増幅率制御回路の構成例図で
ある。FIG. 3 is a diagram showing a configuration example of a conventional received power amplification factor control circuit.
４ 受信電力増幅器 １３ 検波器 １４ 受信電力検出器 １５送受信電力制御回路 １７ 第１送信電力増幅器 4 reception power amplifier 13 detector 14 reception power detector 15 transmission / reception power control circuit 17 first transmission power amplifier
Claims (1)
する検波器と、該検波器の出力電圧をあらかじめ定めた
基準電圧と比較し、これら電圧の判定結果を出力する受
信電力検出器と、該受信電力検出器の判定結果によって
送信電力増幅器と受信電力増幅器の電源を同時にＯＮ／
ＯＦＦ制御を行う事ができる送受信電力制御回路を設け
た事を特徴とする無線機の送受信電力増幅制御回路。1. A detector for rectifying and outputting a DC voltage proportional to received power, a received power detector for comparing the output voltage of the detector with a predetermined reference voltage, and outputting a judgment result of these voltages, The power of the transmission power amplifier and the power of the reception power amplifier are simultaneously turned on / off according to the determination result of the reception power detector.
A transmission / reception power amplification control circuit for a wireless device, which is provided with a transmission / reception power control circuit capable of performing OFF control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP008843U JPH0670336U (en) | 1993-03-04 | 1993-03-04 | Transmitter / receiver power amplification control circuit for radio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP008843U JPH0670336U (en) | 1993-03-04 | 1993-03-04 | Transmitter / receiver power amplification control circuit for radio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0670336U true JPH0670336U (en) | 1994-09-30 |
Family
ID=18528775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP008843U Pending JPH0670336U (en) | 1993-03-04 | 1993-03-04 | Transmitter / receiver power amplification control circuit for radio |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0670336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1013333A (en) * | 1996-06-26 | 1998-01-16 | Nec Corp | Mobile communication equipment |
-
1993
- 1993-03-04 JP JP008843U patent/JPH0670336U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1013333A (en) * | 1996-06-26 | 1998-01-16 | Nec Corp | Mobile communication equipment |
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