Fish‐shaped ultra‐wideband patch antenna with tilt‐folded patch feed. Issue 9 (16th April 2019)

• Record Type: Journal Article
• Authors: Chen, Bingjie; Yang, Xuesong; Hu, Dacheng
• Is Part Of: IET microwaves, antennas & propagation. Volume 13:Issue 9(2019)
• Page Start: 1312
• Page End: 1317
• Publication Date: 2019-04-16
• Subjects: antenna feeds -- broadband antennas -- microstrip antennas -- antenna radiation patterns -- ultra wideband antennas -- slot antennas; U‐shaped slot -- upper patch -- tilt‐folded patch feed -- fish‐shaped patch -- antenna size -- fish‐shaped ultra‐wideband patch antenna -- low‐profile fish‐shaped antenna -- ultra‐wideband applications -- impedance bandwidth -- stepped arms -- ground plane -- shorting wall -- radiation patterns -- frequency 4.28 GHz to 21.0 GHz; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2018.5556
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : This article introduces a low‐profile fish‐shaped antenna for ultra‐wideband applications. The proposed antenna exhibits an impedance bandwidth of 132% (4.28 to 21 GHz) with a size of 0.199 λ L × 0.256 λ L × 0.092 λ L (where λ L is the wavelength at 4.28 GHz). By using a U‐shaped slot and stepped arms on the upper patch, as well as a tilt‐folded patch feed, four resonances are produced and then wide bandwidth is achieved. By introducing a shorting wall standing between the fish‐shaped patch and the ground plane, the antenna size is reduced. The simulation and measurement results show that the antenna provides excellent performance in different bands, meaning that acceptable gain and stable radiation patterns are obtained simultaneously.