Amplifiers – Modulator-demodulator-type amplifier
Reexamination Certificate
2006-04-11
2006-04-11
Nguyen, Khanh V. (Department: 2817)
Amplifiers
Modulator-demodulator-type amplifier
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.
Robinson Ian
Winter Frank
Nguyen Khanh V.
Northrop Grumman Corporation
Tarolli, Sundheim Covell & Tummino L.L.P.
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