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Design and analysis of a compact omnidirectional UWB slot antenna
Author(s) -
Wang Boning,
Yang Deqiang,
Sun Kai
Publication year - 2019
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.31769
Subject(s) - omnidirectional antenna , bandwidth (computing) , microstrip antenna , radiation pattern , optics , patch antenna , slot antenna , wavelength , antenna gain , materials science , physics , optoelectronics , coaxial antenna , electrical engineering , telecommunications , antenna (radio) , engineering
A slot antenna for ultra‐wide band (UWB) application with a compact size, enhanced bandwidth, low profile, flat gain characteristic and omnidirectional radiation pattern is presented in this article. This antenna fed by microstrip to slot line is designed and fabricated on an FR4 substrate with a half‐wavelength rectangular patch as a radiator at low frequency and a pair of quarter‐wavelength long symmetrical slots enhancing the bandwidth at high frequency. This proposed antenna with an overall size of 33 × 10 × 0.8 mm 3 (0.33 λ 0 × 0.1 λ 0 × 0.008 λ 0 at 3 GHz) has a | S 11 | < −10‐dB bandwidth of 3.08‐12.14 GHz (119%), a 1‐dB gain bandwidth of 3.04‐10.5 (110%), and a peak gain of 3.08 dBi at 5.45 GHz in Z direction.