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Frequency reconfigurable zeroth‐order resonant antenna using RF MEMS switch
Author(s) -
Jang Youngsoo,
Choi Jaehyurk,
Lim Sungjoon
Publication year - 2012
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.26803
Subject(s) - ground plane , microelectromechanical systems , reconfigurable antenna , microwave , electrical engineering , antenna (radio) , inductance , transmission line , radio frequency , engineering , acoustics , electronic engineering , physics , optoelectronics , dipole antenna , telecommunications , coaxial antenna , voltage
In this article, a frequency reconfigurable zeroth‐order resonant (ZOR) antenna using RF micro‐electron‐mechanical‐system (MEMS) switch has been implemented. The ZOR characteristics of the proposed antenna are realized using the composite right‐ and left‐handed (CRLH) transmission line, which is realized by way of a rectangular slot on the ground plane of mushroom‐structured antenna to minimize the antenna size. In addition, the RF MEMS switches are introduced on the slotted ground plane to change operation frequency. Depending on the states of the RF MEMS switch on the slotted ground plane, a shunt inductance of the CRLH transmission line is changed, and its resonant frequency becomes tunable. From the experimental results, the resonant frequency of the proposed antenna is changed from 4.95 to 4.66 GHz. Additionally, the proposed antenna's size is reduced by 71.5% compared with the conventional half‐wavelength patch antenna. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1266–1269, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26803