Title :
A novel broadband circularly polarization microstrip antenna
Author :
Xiang Yang ; Qian ZuPing ; Zhao Shoujun ; Bao Junsong
Author_Institution :
Inst. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing
Abstract :
Based on negative refraction circuit theory, a novel broadband Wilkonson balun which is constructed by conventional transmission line with lumped-element series capacitors and shunt inductors is proposed in this paper. And the realization method of broadening impedance and circular polarization axis ratio bandwidth is analyzed. A novel CP microstripe antenna using the balun is proposed which central frequence is 1.40GHz , and the axis ratio bandwidth achieved 52.37%, The VSWR is always below 2 in the bandwidth.
Keywords :
UHF antennas; baluns; broadband antennas; electromagnetic wave polarisation; microstrip antennas; transmission lines; UHF antennas; broadband Wilkonson balun; broadband circular polarization; lumped-element series capacitors; microstrip antenna; negative refraction circuit theory; shunt inductors; transmission line; Bandwidth; Broadband antennas; Capacitors; Circuit theory; Distributed parameter circuits; Impedance matching; Microstrip antennas; Polarization; Shunt (electrical); Transmission line theory;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2008. ICMMT 2008. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-1879-4
Electronic_ISBN :
978-1-4244-1880-0
DOI :
10.1109/ICMMT.2008.4540653
