A low-profile two-arm Archimedean spiral antenna radiating a circularly polarized normal beam or conical beam

Author

Bin Wen ; Ze-Hong Yan ; Ke Chen ; Yan Shi

Author_Institution

Nat. Key Lab. of Antenna & Microwave Technol., Xidian Univ., Xi´an, China

fYear

2013

fDate

24-25 Oct. 2013

Firstpage

62

Lastpage

65

Abstract

A two-arm Archimedean spiral antenna (TAS) is proposed to provide a circularly polarized (CP) normal beam or conical beam. The antenna is fed by coaxial lines without a balun circuit. When it is excited out of phase, a CPnormal beam which is almost symmetric with respect to the antenna axis is produced. While excited in phase, it radiates a CP conical beam. The antenna height is chosen to be extremely small to realize a low-profile antenna. The simulated results show that the antenna has a good VSWR and a good axial ratio over the frequency range of 1.8GHz to 2.1GHz.

Keywords

UHF antennas; antenna radiation patterns; spiral antennas; CP conical beam; CP normal beam; circular polarization; coaxial lines; frequency 1.8 GHz to 2.1 GHz; low-profile; low-profile two-arm Archimedean spiral antenna; Cavity resonators; Dielectric substrates; Materials; Reflector antennas; Spirals; Wideband; Circularly polarized; conical beam; low-profile antenna; normal beam; spiral antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Circuits and System Technology (MMWCST), 2013 International Workshop on

Conference_Location

Chengdu

Type

conf

DOI

10.1109/MMWCST.2013.6814565

Filename

6814565