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An intelligently controlled RF power amplifier with a reconfigurable MEMS-varactor tuner

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6 Author(s)
Dongjiang Qiao ; Dept. of Electr. & Comput. Eng., Univ. of California, La Jolla, CA, USA ; Molfino, R. ; Lardizabal, S.M. ; Pillans, Brandon
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This paper presents an intelligently controlled RF power amplifier with a reconfigurable output tuner using microelectromechanical system (MEMS) switches and a varactor. By switching on/off the MEMS switches and varying the bias voltage of the varactor, the performance of the amplifier is optimized for input signals with known or unknown frequencies in a range of 8-12 GHz. Fabrication-related unit-to-unit variations of the amplifier are overcome by the reconfigurable tuner. Directed algorithms based on a characterization table and on black-box genetic algorithms are developed for optimization and search.

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:53 ,  Issue: 3 )

Date of Publication:

March 2005

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