Compact and high isolation microstrip diplexer for GPS and UWB application. Issue 10 (1st May 2013)

• Record Type: Journal Article
• Authors: Deng, H.W.; Zhao, Y.J.; Fu, F.; Zhou, X.J.; Liu, Y.Y.
• Is Part Of: Electronics letters. Volume 49:Issue 10(2013)
• Page Start: 659
• Page End: 661
• Publication Date: 2013-05-01
• Subjects: Global Positioning System -- microstrip lines -- multiplexing equipment -- resonators -- ultra wideband communication; fabricated diplexer -- extra junction matching network -- out‐of‐band rejection -- multiple transmission zeros -- mutual loading effect -- side‐coupled shorted microstrip line -- short‐circuit centred stepped impedance resonators -- compact filters -- isolation performance -- high selectivity -- low insertion loss -- UWB application -- GPS -- high isolation microstrip diplexer -- compact microstrip diplexer; Global Positioning System -- microstrip lines -- multiplexing equipment -- resonators -- ultra wideband communication; fabricated diplexer -- extra junction matching network -- out‐of‐band rejection -- multiple transmission zeros -- mutual loading effect -- side‐coupled shorted microstrip line -- short‐circuit centred stepped impedance resonators -- compact filters -- isolation performance -- high selectivity -- low insertion loss -- UWB application -- GPS -- high isolation microstrip diplexer -- compact microstrip diplexer; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2012.3247
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A novel microstrip diplexer with low insertion loss, high selectivity and isolation performance is proposed through the combination of two compact filters composed of short‐circuit centred stepped impedance resonators and, a side‐coupled shorted microstrip line, which are designed for GPS and UWB application, respectively. Due to the intrinsic characteristics and mutual loading effect of the two filters, multiple transmission zeros can be created to improve the out‐of‐band rejection and isolation of the diplexer. More compact size is obtained without an extra junction matching networks. Simulated results of the fabricated diplexer agree well with measured ones.