Amplifier with dynamically adaptable supply current

Details Amplifier with dynamically adaptable supply current Amplifier with dynamically adaptable supply current

1998-05-18

1999-12-28

Mottola, Steven J.

Amplifiers

With semiconductor amplifying device

Including gain control means

330285, H03G 330

Patent

active

06008698&

ABSTRACT:
An adaptable DC power consumption circuit is provided, wherein the current supplied to an RF amplifier is dynamically varied from a desired level. A feedback control loop is formed between the power terminal and the control terminal of the RF amplifier. A controller influences the feedback control loop to properly set the supply current at the desired minimum level necessary to maintain linear operation of the RF amplifier. The output of the RF amplifier influences the feedback control loop to dynamically vary the supply current from the desired level. In this manner, linear operation of the RF amplifier can be maintained while maximizing the power efficiency of the RF amplifier.

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