Abstract
AbstractA new compact and wideband 180° hybrid is proposed. The proposed structure stems from the idea of converting a balun into a 180° hybrid by adding an in‐phase power divider. In order to achieve wide bandwidth and miniaturized size, a lumped power divider and a vertically coupled CPW balun with lumped elements are used. For verification, the proposed 180° hybrid is designed at 917 MHz. The measurement shows that the bandwidth of CMRR greater than 25 dB is increased by 84 % compared with that of the conventional ring hybrid. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1328–1331, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27592
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