JPH02147939U

JPH02147939U -

Info

Publication number: JPH02147939U
Application number: JP5576989U
Authority: JP
Priority date: 1989-05-17
Filing date: 1989-05-17
Publication date: 1990-12-17

Description

[Brief explanation of drawings]

第１図は本考案の原理構成を示すブロツク図、
第２図は本考案の一実施例である無線機の自動出
力制御回路、第３図は本考案の係る無線機の送信
系のブロツク図、第４図は従来の無線機の送信系
のブロツク図、第５図は従来の無線機の自動出力
制御回路を示す図、第６図は第５図の出力電圧検
出器を説明する図である。図において、１……高電力・低電力検出電圧切
替回路、２……高電力・低電力基準電圧切替回路
、３……比較器、４……電圧検出器、５……送信
出力電力増幅回路。 Figure 1 is a block diagram showing the principle configuration of the present invention.
Fig. 2 is an automatic output control circuit of a radio device which is an embodiment of the present invention, Fig. 3 is a block diagram of a transmission system of a radio device according to the present invention, and Fig. 4 is a block diagram of a transmission system of a conventional radio device. 5 is a diagram showing an automatic output control circuit of a conventional radio device, and FIG. 6 is a diagram explaining the output voltage detector of FIG. 5. In the figure, 1... High power/low power detection voltage switching circuit, 2... High power/low power reference voltage switching circuit, 3... Comparator, 4... Voltage detector, 5... Transmission output power amplifier circuit .

Claims

[Claims for Utility Model Registration] A transmission output power amplification circuit 5 for obtaining a predetermined output power for an input signal S _in of a predetermined frequency, and a power detector for detecting the output power from the transmission output power amplification circuit 5. 4, and a comparator 3 that compares the detected voltage V _det from the power detector 4 with a reference voltage and returns a power control signal V _c to the transmission output power amplification circuit 5 to obtain a predetermined power. In the machine's automatic output control circuit, the transmission identification signal VH/
The detected voltage V _d from the power detector 4 according to L _et to high level V _det H and low level V _det L
a high-power/low-power detection voltage switching circuit 1 that switches to and outputs it to the comparator 3; and a high level V _det H and a low level V _det of the detection voltage from the high-power/low power detection voltage switching circuit 1. Corresponding to L, the reference voltage is set to a high reference voltage V _re 1. An automatic output control circuit for a radio device, characterized in that a high power/low power reference voltage switching circuit 2 is provided which switches between _f H and low reference voltage V _ref L and outputs them to the comparator 3.