Control circuit and method for transmission output

Details Control circuit and method for transmission output Control circuit and method for transmission output

1992-11-16

1994-12-27

Mullins, James B.

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

330133, 330134, 330279, 455126, H03G 320

Patent

active

053768957

ABSTRACT:
A control circuit for a transmission output is used in a TDMA system radio transmitter or the like and can control a transmission output burst wave stably with high accuracy over a wide range. There is provided a closed loop system in which part of the transmission output is taken out and detected to be compared with a reference voltage to control a power amplifier and an open loop system for controlling a drive amplifier connected to an input of the power amplifier, so that a wide range operation of the transmission output and multi-stage control are attained by combining controls of both the loops.

REFERENCES:
patent: 4592073 (1986-05-01), Watanabe
patent: 4602218 (1986-07-01), Vilmur et al.
patent: 5101176 (1992-03-01), Norimatsu
patent: 5121081 (1992-06-01), Hori
patent: 5128629 (1992-07-01), Trinh

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