Design and analysis of a compact omnidirectional UWB slot antenna. Issue 8 (19th February 2019)

• Record Type: Journal Article
• Authors: Wang, Boning; Yang, Deqiang; Sun, Kai
• Is Part Of: Microwave and optical technology letters. Volume 61:Issue 8(2019:Aug.)
• Page Start: 1917
• Page End: 1923
• Publication Date: 2019-02-19
• Subjects: compact size -- flat gain characteristic -- omnidirectional radiation pattern -- slot antenna -- ultra‐wideband; Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.31769
• Languages: English
• ISSNs: 0895-2477

Abstract

Abstract: 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.