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A dual‐band compact printed monopole antenna using multiple rectangle‐shaped defected ground structures and cross‐shaped feed line
Author(s) -
Kumar Sanjeev,
Tomar Raghuvir
Publication year - 2015
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.29195
Subject(s) - monopole antenna , ground plane , radiation pattern , patch antenna , return loss , dipole antenna , microstrip antenna , coaxial antenna , antenna measurement , multi band device , antenna (radio) , antenna efficiency , electrical engineering , optics , antenna factor , physics , engineering
A compact printed monopole antenna with dual‐band operation at 1.8 GHz (GSM Band) and 5.2 GHz (Wi‐Fi Band) is presented. The antenna consists of a modified U‐shaped radiating patch with a triple rectangular defect in the ground plane. The antenna is fed by a cross‐shaped feed line, which helps in realizing the dual‐band operation. The antenna has been designed using RO4350 substrate. The design size achieved is 19 × 28 mm 2 . An impedance bandwidth of about 32% at 1.8 GHz and about 29% at 5.2 GHz for 10 dB return loss has been achieved. A size reduction of about 12% in comparison with a similar antenna without defected ground structures has been achieved. The proposed antenna has been fabricated and tested, and a good agreement between simulated and measured results is seen. Acceptable E‐plane and H‐plane radiation patterns have been observed through simulations, and a peak antenna gain of about 2.8 dBi has been achieved. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1810–1813, 2015