Title :
Broadband circularly polarized square microstrip antenna
Author :
Yazhou, Wang ; Donglin, Su ; Yongxuan, Xiao
Author_Institution :
Sch. of Electron. & Inf. Eng., BUAA, Beijing
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;
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
DOI :
10.1109/ISAPE.2006.353482
