Dual loop feedforward power amplifier

Details Dual loop feedforward power amplifier Dual loop feedforward power amplifier

2005-10-25

2005-10-25

Choe, Henry (Department: 2817)

Amplifiers

With pilot frequency control means

C330S151000

Reexamination Certificate

active

06958647

ABSTRACT:
A feedforward amplifier. The present invention therefore provides a feedforward amplifier, comprising: a pilot reference generator that generates a pilot signal; a first carrier cancellation loop; a first error amplifier loop including a first error amplifier, wherein the pilot signal is utilized to provide gain stabilization in the first error amplifier a third loop; a second carrier cancellation loop that includes a first phase and amplitude adjuster in module and a second amplitude and phase adjuster disposed between module and module, wherein the pilot signal is utilized to control the adjustment of the second carrier cancellation loop.

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