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Bandwidth Enhancement Using Z‐Shaped Defected Ground Structure for a Microstrip Antenna
Author(s) -
Kandwal Abhishek,
Sharma Rakesh,
Kumar Khah Sunil
Publication year - 2013
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.27836
Subject(s) - microstrip antenna , wideband , bandwidth (computing) , return loss , patch antenna , microwave , antenna gain , physics , electrical impedance , antenna factor , antenna measurement , electrical engineering , antenna (radio) , engineering , optics , acoustics , telecommunications
A novel design of a circular patch antenna having Z‐shaped defected ground structure is presented in this communication. The antenna is designed for X‐band applications. A wideband is obtained in the X‐band frequency range 8–12 GHz. The return loss and input impedance is measured experimentally and compared with the simulated results. Parameters like impedance bandwidth, voltage standing wave ratio, and antenna gain are calculated and discussed. Impedance bandwidth of about 1.2 GHz is obtained with a gain of 8.7 dBi and side lobe level of −20.1 dB. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2251–2254, 2013