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Novel dual‐band hybrid coupler using improved simplified CRLH transmission line stubs
Author(s) -
Gong JianQiang,
Liang ChangHong,
Wu Bian
Publication year - 2010
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.25491
Subject(s) - stub (electronics) , multi band device , microstrip , transmission line , microwave , planar , hybrid coupler , electrical impedance , materials science , optoelectronics , electric power transmission , electronic engineering , power dividers and directional couplers , topology (electrical circuits) , electrical engineering , computer science , engineering , telecommunications , computer graphics (images) , antenna (radio)
Abstract In this article, a novel dual‐band hybrid coupler is designed by adopting improved simplified composite right‐/left‐handed (ISCRLH) transmission line (TL) stubs.An ISCRLH TL stub is composed of two ISCRLH TL unit cells with input and output uniform TL sections at the terminals, which can produce specified impedance and phase shift at two (arbitrary) different frequencies. The conditions for synthesizing the dual‐band ISCRLH TL stub are discussed in detail, and then such a stub is applied to implement a novel dual‐band hybrid coupler in microstrip configuration, and excellent agreement between the simulated and measured results is achieved, which reveal good performance and dual‐band operation. The novel device is small, fully planar, and easily designed and fabricated. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2473–2476, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25491