Abstract
A new compact size microstrip arbitrary coupling directional coupler (DC) based on the coupled line composite right/left handed (CL-CRLH) unit cell is proposed. The coupler is patterned on a single metal layer, does not use vias, and occupies 45 × 11 mm2 area. Its bandwidth is 400 MHz centered around 2.4 GHz and it provides −3 dB coupling coefficient. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:115–119, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27270
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