Variable supply amplifier system

Amplifiers – Modulator-demodulator-type amplifier

Reexamination Certificate

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Details

C330S136000, C330S297000

Reexamination Certificate

active

07026868

ABSTRACT:
Systems and methods are provided for determining and providing an appropriate variable voltage supply to a power amplifier. A power amplifier is operative to amplify an input signal. A digital buffer stores a copy of the input signal representing a predetermined interval of time. An envelope profiler analyzes the buffered interval of the input signal and determines an appropriate supply signal profile for the power amplifier over the predetermined time interval. A supply control provides a supply signal according to the determined profile.

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Ranjan M et al: “Microwave Power Amplifiers with Digitally-Controlled Power Supply Voltage for High Efficiency and High Linearity”, Microwave Symposium Digest, 2000 IEEE MTT-S International Boston, MA USA Jun. 11-16, 2000, Piscataway, NJ USA, IEEE, US, vol. 1, pp. 493-496, XP010506024, ISBN: 0-7803-5687-X; Relevance—whole document.

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