Theory and design of a tunable Quasi-Lumped Quadrature Coupler

✍ Scribed by Fabien Ferrero; Cyril Luxey; Robert Staraj; Gilles Jacquemod; Matthew Yedlin; Vincent Fusco

• Book ID: 102516408
• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 240 KB
• Volume: 51
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.24526

✦ Synopsis

Abstract

In this article, we present the theory and a design methodology for a tunable Quasi‐Lumped 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 inductors are required. A prototype at 3.5 GHz is etched on a 0.130‐mm‐thick layer substrate with a dielectric material of relative permittivity of 2.22. The simulated and measured scattering parameters are presented. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2219–2222, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24526