A COMPACT DVB-H MARCHAND BALUN USING VERTICALLY COUPLING CPW STRUCTURE

Abstract

A compact DVB-H (digital video broadcasting Handheld) Marchand balun using coplanar waveguide (CPW) coupling structure is presented. The proposed structure combines a double sided meandered CPW Marchand structure with lumped elements. Having the vertical coupling of meandered CPW Marchand structure, wide bandwidth for DVB-H band (470-710 MHz) is achieved. Also. lumped elements are used to reduce the physical length of the coupling meandered lines. The proposed DVB-H balun is fabricated on FR-4 board and both simulated and measured results are presented to illustrate its performance. (C) 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1174-1177, 2010: Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25150