Theory and design of a tunable Quasi-Lum
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Fabien Ferrero; Cyril Luxey; Robert Staraj; Gilles Jacquemod; Matthew Yedlin; Vi
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Article
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2009
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John Wiley and Sons
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English
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## Abstract In this article, we present the theory and a design methodology for a tunable QuasiโLumped Quadrature Coupler (QLQC). Because of its topology, the coupler is simply reconfigured by switching the bias of two varactor diodes via a very simple DC bias circuitry. No additional capacitors or