Broadband circularly polarized square microstrip antenna

Author

Yazhou, Wang ; Donglin, Su ; Yongxuan, Xiao

Author_Institution

Sch. of Electron. & Inf. Eng., BUAA, Beijing

fYear

2006

fDate

26-29 Oct. 2006

Firstpage

1

Lastpage

4

Abstract

The design of a broadband square microstrip antenna with circular polarization radiation is presented in this paper. The antenna comprises a thick air substrate and single square microstrip radiating patch, which is excited by dual capacitive-coupled feed disks connected to a Wilkinson power divider having equal amplitude and a 90deg phase shift between its two outputs. The experimental results show that the proposed antenna is able to achieve an impedance bandwidth of 69% for VSWR less than 2 and a 3 dB axial-ratio bandwidth about 23%.

Keywords

antenna feeds; broadband antennas; electromagnetic wave polarisation; microstrip antennas; power dividers; VSWR; Wilkinson power divider; antenna design; broadband antenna; capacitive-coupled feed disks; circular polarization radiation; circularly polarized antenna; impedance bandwidth; microstrip radiating patch; square microstrip antenna; square radiating patch; thick air substrate; Antenna feeds; Bandwidth; Broadband antennas; Hydrogen; Impedance; Microstrip antennas; Optical polarization; Permittivity; Power dividers; Resistors; Broadband; circularly polarized; microstrip antenna; square;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas, Propagation & EM Theory, 2006. ISAPE '06. 7th International Symposium on

Conference_Location

Guilin

Print_ISBN

1-4244-0162-3

Electronic_ISBN

1-4244-0163-1

Type

conf

DOI

10.1109/ISAPE.2006.353482

Filename

4168143