Output waveform control circuit

Details Output waveform control circuit Output waveform control circuit

1990-06-27

1992-06-09

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including gain control means

455126, H03G 330

Patent

active

051210819

ABSTRACT:
An output waveform control circuit for a time division multiple access system (TDMA), including a second driving circuit which sends a control signal to the power amplifier in accordance with a signal outputted by the comparator circuit. Thus, by controlling the operating voltage of the power amplifier simultaneously with the control of the level input signal from the input level control circuit, the output characteristic of the power amplifier, including a class C or the like amplifier having a non-linear input/output characteristic, is prevented from varying abruptly, and the output waveform of the power amplifier is so controlled as to have gently sloped leading and trailing edges.

REFERENCES:
patent: 4147991 (1979-04-01), Ijichi et al.
patent: 4563775 (1986-01-01), Yokosuka
patent: 4754231 (1988-06-01), Sawa

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