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Analysis of a compact and broadband microstrip patch antenna
Author(s) -
Ansari Jamshed A.,
Ram Ram Brij
Publication year - 2008
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.23573
Subject(s) - microstrip antenna , patch antenna , broadband , microwave , antenna measurement , microstrip , bandwidth (computing) , antenna efficiency , center frequency , coaxial antenna , acoustics , antenna (radio) , engineering , electrical engineering , physics , optics , telecommunications , band pass filter
A broadband microstrip patch antenna with U‐shaped parasitic elements is proposed and analyzed using equivalent circuit theory concept. The effects of gap between the main patch and the U‐shaped parasitic elements, substrate thickness, and the feed point location are analyzed to obtain the optimum conditions for broadband operation of the antenna. The antenna shows an operational frequency band from 4.88 to 6.44 GHz with 28.36% bandwidth at center frequency 5.5 GHz. The radiation patterns of the proposed antenna are similar to that of a rectangular patch. The antenna shows 3‐dB beam width of 98.6° at lower resonance frequency whereas it is 77.6° at higher resonance frequency. The theoretical results are in good agreement with experimental results. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2059–2063, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23573