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A frequency-tunable impedance matching network based on coupled inductors for RF power amplifiers

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4 Author(s)
Dal Fabbro, P.A. ; Electron. Lab., EPFL, Lausanne ; Kayal, M. ; Kobayashi, K. ; Watanabe, Y.

In this paper we present an RF PA employing an output impedance matching network of the pi-type, where an inductor is variable. In order to implement this tunable inductor, the coupled-inductor technique [1] is used. Although other techniques for inductor tuning exist, like those using active [2] and MEMS inductors, and p-i-n diodes [3], the coupled-inductor technique is the only providing quality factor (Q) enhancement and tunable capability.

Published in:

Microwave Conference, 2008. APMC 2008. Asia-Pacific

Date of Conference:

16-20 Dec. 2008