Polar and linear amplifier system

Amplifiers – Modulator-demodulator-type amplifier

Reexamination Certificate

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C330S297000

Reexamination Certificate

active

06987417

ABSTRACT:
An amplifier system is provided that switches between operation in a polar mode and a linear mode based on a characteristic of an input signal relative to a threshold level. The system operates as a polar amplifier in the polar mode, and as a linear amplifier in the linear mode. A mode selector controls whether polar components of the input signal are sent to a power amplifier or whether a composite signal is amplified.

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