JPS5847332A - Control circuit of transmission output - Google Patents
Control circuit of transmission outputInfo
- Publication number
- JPS5847332A JPS5847332A JP14568481A JP14568481A JPS5847332A JP S5847332 A JPS5847332 A JP S5847332A JP 14568481 A JP14568481 A JP 14568481A JP 14568481 A JP14568481 A JP 14568481A JP S5847332 A JPS5847332 A JP S5847332A
- Authority
- JP
- Japan
- Prior art keywords
- transmission output
- transmission
- signal
- circuit
- section
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
- Transmitters (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は送信機と受信機を備えた通信機において、送信
出力を安定に制御するようにした送信出力制御回路に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transmission output control circuit that stably controls transmission output in a communication device equipped with a transmitter and a receiver.
従来、第〜１因に示すよう、な送信機（１）と受信機（
２）を備えた通信機において、送信出力を安定に制御す
るためには、送信出力増幅部（３）とアンテナ切換回路
（４）との間に、送信出力の検出回路（５）を設け、こ
の検出回路（５）で検出した出力を送信出力制御部（６
）内の直流増幅器で適当な直流電圧に変換し、その出力
電圧により前記送信出力増幅部（３）へ帰還してその電
源電圧を送信出力が大きいときは低く、小さいときは高
くなるように制御していた。なお、図中、（７）は送信
信号入力部、（８）は受信高周波部、（９）は受信信号
出力部、ＱｌはＬＰＦ’（ローパスフィルタ）、αυは
アンテナである。Conventionally, as shown in factors 1 to 1, a transmitter (1) and a receiver (
2), in order to stably control the transmission output, a transmission output detection circuit (5) is provided between the transmission output amplification section (3) and the antenna switching circuit (4), The output detected by this detection circuit (5) is transmitted to the transmission output control section (6).
) is converted to an appropriate DC voltage by a DC amplifier, and the output voltage is fed back to the transmission output amplifier (3), and the power supply voltage is controlled so that it is low when the transmission output is high and high when it is low. Was. In the figure, (7) is a transmission signal input section, (8) is a reception high frequency section, (9) is a reception signal output section, Ql is an LPF' (low pass filter), and αυ is an antenna.
このような従来の回路構成では、高出力で送信をする場
合、検出回路（５）での送信出力の検出量のコントロー
ルが難しく、安定に送信出力を制御することができなか
った。例えば、検出回路（５）として、送信出力信号ラ
インに微小容量を結合して検出する方法では、その信号
ラインのインピーダンスに悪影響を与える欠点があった
。In such a conventional circuit configuration, when transmitting at high output, it is difficult to control the amount of detected transmission output by the detection circuit (5), and it is not possible to stably control the transmission output. For example, a method in which a minute capacitance is coupled to the transmission output signal line as the detection circuit (5) for detection has the drawback of adversely affecting the impedance of the signal line.
本発明はこのような従来の問題点を解決するためになさ
れたもので、高周波高出力に対する影響の少ない受（Ｍ
機内に、検出回路と送信出力制御部を設け、その出力で
送信出力制御部を制御し、動作の安定性を向上させたも
のである。The present invention was made in order to solve these conventional problems, and it has been developed to provide a receiver (M
A detection circuit and a transmission output control section are provided inside the machine, and the output of the detection circuit is used to control the transmission output control section, improving operational stability.
本発明の一実施例を第２図について説明する。An embodiment of the present invention will be described with reference to FIG.
翰は送信機、ｅ２＋）は受信機で、これらの送信機■と
受信機Ｑυはアンテナ切換回路（ハ）、ＬＰＦ （ロー
パスフィルタ）（ハ）を介してアンテナ（財）に結合さ
れている。翰 is a transmitter, e2+) is a receiver, and these transmitter ■ and receiver Qυ are coupled to the antenna via an antenna switching circuit (c) and an LPF (low-pass filter) (c).
前記送信機（イ）は、送信信号入力部（ホ）と送信出力
増幅部（イ）からなっている。また、受信機Ｑυは、受
信高周波部■と受信信号出力部（ハ）の他に、前記アン
テナ切換回路（ハ）における送信出力の瀝洩信号を検出
するための検出回路−と、この検出信号を直流電圧に変
換し、送信出力増幅部（イ）の電源電圧を制御するため
の送信出力制御部軸とを有する。The transmitter (A) includes a transmission signal input section (E) and a transmission output amplification section (A). In addition, the receiver Qυ includes, in addition to the reception high frequency section (■) and the reception signal output section (C), a detection circuit for detecting a leakage signal of the transmission output in the antenna switching circuit (C), and this detection signal. and a transmission output control section shaft for converting the voltage into a DC voltage and controlling the power supply voltage of the transmission output amplification section (a).
このような構成において、送信時にアンテナ切換回路匈
が送信［Ｄ側に接続されると、送信信号入力部（ハ）か
ら送信出力増幅部（イ）を経て、アンテナ切換回路ｃ！
２、ＬＰＦ（ハ）を通りアンテナ（財）から送信される
。このとき、アンテナ切換回路（２３では、送信信号が
漏洩するが、このレベルの低い個所での漏洩信号が検出
回路（至）で検出される。この検出回路−の検出出力は
、送信出力制御部■内の直流増幅器で直流電圧に変換さ
れ、この直流電圧で、送信出力増幅部（ハ）の電源電圧
を制御する。つまり、送信出力が大きいときは電源電圧
を低下させ、小さいときは上昇させる。In such a configuration, when the antenna switching circuit C! is connected to the transmitting side (D) during transmission, the antenna switching circuit c!
2. Passes through the LPF (c) and is transmitted from the antenna. At this time, the transmission signal leaks in the antenna switching circuit (23), but this leakage signal at a low level point is detected by the detection circuit (to).The detection output of this detection circuit is transmitted to the transmission output control section. ■It is converted to a DC voltage by the DC amplifier inside, and this DC voltage controls the power supply voltage of the transmission output amplifier (C).In other words, when the transmission output is large, the power supply voltage is lowered, and when it is small, it is increased. .
本発明は上述のように、送信出力の検出回路と送信出力
制御部とを、高周波高出力の影響の少ない受信機内に設
置したので、送信出力信号ラインのインピーダンスに悪
影響を与えず、したがって動作の安定性を向上させるこ
とができる。As described above, in the present invention, the transmission output detection circuit and the transmission output control section are installed in the receiver, which is less affected by high frequency and high output, so that the impedance of the transmission output signal line is not adversely affected, and therefore the operation is improved. Stability can be improved.
第１図は従来の通信機のブロック図、第２図は本発明に
よる通信機の一実施例を示すブロック図である。
（１）Ｃ２１）・・・送信機、（２）Ｑυ・・・受信機
、（３）＠・・・送信出力増幅′部、（４）■・・・ア
ンテナ切換回路、（５）翰・・・検出回路、（６）（至
）・・・送信出力制御部、（７）□□□・・・送信信号
入力部、（８）＠・・・受信高周波部、（９）（至）・
・・受信信号出力部、Ｑ（Ｈ３１・・・ＬＰＦ。
αυ＠・・・アンテナ。
特許出願人 株式会社 ゼ ネ ラ ル代理人 弁理
士古澤俊明
同 加納−男FIG. 1 is a block diagram of a conventional communication device, and FIG. 2 is a block diagram showing an embodiment of a communication device according to the present invention. (1) C21)...Transmitter, (2) Qυ...Receiver, (3)@...Transmission output amplification section, (4)■...Antenna switching circuit, (5) Kan... ...detection circuit, (6) (to)...transmission output control section, (7)□□□...transmission signal input section, (8)@...reception high frequency section, (9) (to)・
...Received signal output section, Q (H31...LPF. αυ@...antenna. Patent applicant: General Co., Ltd. Agent, Patent attorney Toshiaki Furusawa, Kano-male)
Claims (1)
と、受信高周波部と受信信号出力部からなる受信機とを
アンテナ切換回路で切換えて送信と受信を可能とした通
信機において、 該受信機内であって該受信高周波部の前段に設けられ該
アンテナ切換回路において漏洩した送信信号を検出する
ための検出回路と、 該受信機内に設けられ該検出回路の検出信号に応じて送
信出力を制御するための送信出力制御部と、 からなることを特徴とする送信出力制御回路。 （２、特許請求の範囲第１項記載において、送信出力制
御部は検出回路の検出信号を直流電圧に変換する直流増
幅器を具備してなる送信出力制御回路。(1) In a communication device that enables transmission and reception by switching between a transmitter consisting of a transmission signal input section and a transmission output amplification section and a receiver consisting of a reception high frequency section and a reception signal output section using an antenna switching circuit, a detection circuit provided in the receiver upstream of the reception high frequency section for detecting a transmission signal leaked in the antenna switching circuit; and a detection circuit provided in the receiver and configured to detect a transmission output according to the detection signal of the detection circuit. A transmission output control circuit comprising: a transmission output control section for controlling; (2. The transmission output control circuit according to claim 1, wherein the transmission output control section includes a DC amplifier that converts the detection signal of the detection circuit into a DC voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14568481A JPS5847332A (en) | 1981-09-16 | 1981-09-16 | Control circuit of transmission output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14568481A JPS5847332A (en) | 1981-09-16 | 1981-09-16 | Control circuit of transmission output |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5847332A true JPS5847332A (en) | 1983-03-19 |
| JPS6223930B2 JPS6223930B2 (en) | 1987-05-26 |
Family
ID=15390691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14568481A Granted JPS5847332A (en) | 1981-09-16 | 1981-09-16 | Control circuit of transmission output |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5847332A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005101672A1 (en) * | 2004-04-08 | 2005-10-27 | M/A-Com, Inc. | Apparatus and method for detecting radio frequency transmission power levels |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63152834U (en) * | 1987-03-27 | 1988-10-06 |
-
1981
- 1981-09-16 JP JP14568481A patent/JPS5847332A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005101672A1 (en) * | 2004-04-08 | 2005-10-27 | M/A-Com, Inc. | Apparatus and method for detecting radio frequency transmission power levels |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6223930B2 (en) | 1987-05-26 |
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