Design of Novel Wideband Circularly Polarized Antenna Based on Vivaldi Antenna Structure

Author

Yong-Jin Hu ; Zhi-Mo Qiu ; Bo Yang ; Shu-Jie Shi ; Jian-Jun Yang

Author_Institution

Commun. Equip. Repair Inst., Beijing, China

Volume

14

fYear

2015

fDate

7/7/1905 12:00:00 AM

Firstpage

1662

Lastpage

1665

Abstract

This letter presents a novel compact wideband circularly polarized antenna by utilizing Vivaldi antenna structure as the design concept. The proposed antenna consists of four exponentially tapered patches, a circular metal wall and a feed network. Four tapered patches are sequentially rotated and vertically located in the circular metal wall which acts as a vertical ground plane. Slot-coupled feed technique is applied to feed the antenna. Feeding by a corporate feed network, wide impedance bandwidth and axial ratio bandwidth are achieved. Parametric studies are made to optimize the antenna. The experimental results show that the antenna exhibits a 3-dB AR bandwidth of 41.4% (3.45-5.25 GHz) and a 10-dB impedance bandwidth of 57.3% (3.06-5.52 GHz).

Keywords

antenna feeds; antenna radiation patterns; microstrip antennas; slot antennas; AR bandwidth; Vivaldi antenna structure utilization; axial ratio bandwidth; bandwidth 3.06 GHz to 5.52 GHz; bandwidth 3.45 GHz to 5.25 GHz; circular metal wall; corporate feed network; design concept; exponential tapered patch; impedance bandwidth; novel compact wideband circularly polarized antenna; slot-coupled feed technique; vertical ground plane; wide impedance bandwidth; Antenna feeds; Antenna measurements; Bandwidth; Broadband antennas; Slot antennas; Circular polarization (CP); Vivaldi antennas; slot coupled feed technique; wideband antennas;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2015.2417355

Filename

7069205