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1. (WO2001003288) INTEGRATED TUNABLE HIGH EFFICIENCY POWER AMPLIFIER

Pub. No.:    WO/2001/003288    International Application No.:    PCT/US2000/014878
Publication Date: Fri Jan 12 00:59:59 CET 2001 International Filing Date: Wed May 31 01:59:59 CEST 2000
IPC: H01H 59/00
H03F 1/42
H03F 3/217
Applicants: ROCKWELL SCIENCE CENTER, LLC
Inventors: BARLETT, James, L.
CHANG, Mau, Chung, F.
MARCY, Henry, O., 5th
PEDROTTI, Kenneth, D.
PEHLKE, David, R.
SEABURY, Charles, W.
YAO, Jun, J.
MEHROTRA, Deepak
THAM, Julian, J., L.
Title: INTEGRATED TUNABLE HIGH EFFICIENCY POWER AMPLIFIER
Abstract:
Power amplifiers having reactive networks (such as classes C, C-E, E and F) employ tunable reactive devices (Cshunt, Cseries, Lseries) in their reactive networks, with the reactive devices respective reactance values capable of being adjusted by means of respective control signals. The tunable reactive devices are made from micro-electromechanical (MEM) devices (S1, S2, S3) capable of being integrated with the control circuitry (110) needed to produce the control signals and other amplifier components on a common substrate. The reactive components have high Q values across their adjustment range, enabling the amplifier to produce an output with a low harmonic content over a wide range of input signal frequencies, and a frequency agile, high quality output. The invention can be realized on a number of foundry technologies.