JPS60180143U

JPS60180143U - automatic output control circuit

Info

Publication number: JPS60180143U
Application number: JP5120385U
Authority: JP
Inventors: 小野　英代
Original assignee: 三菱電機株式会社
Priority date: 1985-04-04
Filing date: 1985-04-04
Publication date: 1985-11-29

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は自動出力制御回路を備えた一般的な無線送信機
のブロック結線図、第２図は従来の自動出力制御回路説
明図、第３図はこの考案に係る自動出力制御回路の第１
実施例を示す回路説明図、第４図はこの考案に使用する
ＰＩＮダイオードの特性曲線図、第５図は従来の自動出
力制御回路とこの発明の自動出力制御回路の制御電流−
送信出力電力特性の比較図、第６図はこの考案に係る自
動出力制御回路の第２実施例を示す回路説明図である。図中、２は高周波増幅器、３は電力増幅器、４は方向性
結合器、ａは進行波検電力検出端子、ｂは反射波電力検
出端子、５は帰還増幅器、８は自動出力制御回路、Ｄ４
はＰＩＮダイオード、Ｃｏは直流阻止コンデンサ、ＴＲ
１は高周波増幅用トランジスタである。図中同一あるい
は相当部分には同一符号を示す。Fig. 1 is a block diagram of a general wireless transmitter equipped with an automatic output control circuit, Fig. 2 is an explanatory diagram of a conventional automatic output control circuit, and Fig. 3 is a first diagram of an automatic output control circuit according to this invention.
A circuit explanatory diagram showing an embodiment, FIG. 4 is a characteristic curve diagram of a PIN diode used in this invention, and FIG. 5 is a control current of a conventional automatic output control circuit and an automatic output control circuit of the present invention.
A comparison diagram of transmission output power characteristics, and FIG. 6 is a circuit explanatory diagram showing a second embodiment of the automatic output control circuit according to the invention. In the figure, 2 is a high frequency amplifier, 3 is a power amplifier, 4 is a directional coupler, a is a traveling wave power detection terminal, b is a reflected wave power detection terminal, 5 is a feedback amplifier, 8 is an automatic output control circuit, and D4
is a PIN diode, Co is a DC blocking capacitor, TR
1 is a high frequency amplification transistor. Identical or corresponding parts in the figures are denoted by the same reference numerals.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

（１）高周波増幅器、この高周波増幅器からの出力信号
を受ける電力増幅器、この電力増幅器からの出力信号を
受けて送信電力を出力する方向性結合器、及びこの方向
性結合器からの前記送信電力に伴う反射波出力及び進行
波出力を受けて前記高周波増幅器を制御する帰還増幅器
を備えた自動出力制御回路において、前記高周波増幅器の入力側に前記高周波増幅器と高周波
的にＰＩＮダイオードを並列接続又は直列接続し、前記
ＰＩＮダイオードに前記送信出力電力に比例した直流電
流を供給して前記高周波増幅器を制御するようにしたこ
とを特徴とする自動出力制御回路。(1) A high-frequency amplifier, a power amplifier that receives an output signal from this high-frequency amplifier, a directional coupler that receives an output signal from this power amplifier and outputs transmission power, and a directional coupler that outputs transmission power from this directional coupler. In an automatic output control circuit equipped with a feedback amplifier that controls the high frequency amplifier in response to reflected wave output and traveling wave output, a PIN diode is connected in parallel or in series with the high frequency amplifier on the input side of the high frequency amplifier. An automatic output control circuit characterized in that the high frequency amplifier is controlled by supplying a direct current proportional to the transmission output power to the PIN diode.

（２）前記ＰＩＮダイオードと直流阻止コンデンサとの
直列体を前記高周波増幅器と高周波的に並列接続し前記
ＰＩＮダイオードの陽極と前記直流阻止コンデンサとの
接続点と前記帰還増幅器とを接続した実用新案登録請求
の範囲第１項に記載の自動出力制御回路。(2) Registration of a utility model in which the series body of the PIN diode and the DC blocking capacitor is connected in parallel with the high frequency amplifier in terms of high frequency, and the connection point between the anode of the PIN diode and the DC blocking capacitor is connected to the feedback amplifier. An automatic output control circuit according to claim 1.