Compact planar quasi‐Yagi antenna with band‐notched characteristic for WLAN and DSRC for ultra‐wideband applications. Issue 7 (9th April 2018)

• Record Type: Journal Article
• Authors: Yang, Tianming; Yang, Deqiang; Geng, Dongdong
• Is Part Of: IET microwaves, antennas & propagation. Volume 12:Issue 7(2018)
• Page Start: 1239
• Page End: 1245
• Publication Date: 2018-04-09
• Subjects: Yagi antenna arrays -- wireless LAN -- planar antenna arrays -- microstrip transitions -- slot lines -- indoor navigation -- Q‐factor -- slot antenna arrays -- microwave resonators; compact planar quasi‐Yagi antenna -- band‐notched characteristic -- WLAN -- DSRC -- ultrawideband applications -- wideband microstrip‐to‐slotline transition -- modified bow‐tie driver -- indoor positioning application -- compact interdigital capacitor -- loop resonator -- quality factor -- ring resonator -- antenna slot -- wireless local area networks -- dedicated short‐range communications -- relative impedance bandwidth -- voltage standing wave ratio -- frequency 3.0 GHz to 12.5 GHz; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2017.0982
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : A compact planar quasi‐Yagi antenna with a wideband microstrip‐to‐slotline transition and a modified bow‐tie driver is designed with an enhanced bandwidth for precise indoor positioning applications. A compact interdigital capacitor loaded loop resonator with a high quality factor is placed inside the ring resonator at the end of the antenna's slot to realise band‐notched characteristics over a frequency range of 5.1–6.3 GHz, thus avoiding interference from wireless local area networks (WLANs) and dedicated short‐range communications (DSRCs). Measured results show that the proposed antenna obtains a relative impedance bandwidth, determined by the voltage standing wave ratio <2, higher than 122.6% (3.0–12.5 GHz) and a gain of 4.9–7.8 dBi outside of the stop band.