Title :
The study of wideband single fed CP ring antenna
Author :
Chang, Dau-Chyrh ; Lien, Huan-Cheng
Author_Institution :
Da Yeh Univ., Taiwan, China
Abstract :
The bandwidth of microstrip antenna usually results in a very narrow axial ratio (AR) bandwidth (approximately 1 %). This paper described a novel single-fed ring antenna (SFRA) consists of stacked structure of an annular ring patch, which is designed for left-hand circular polarized (LHCP) at a center frequency of 2.1GHz. The impedance and 3-dB AR bandwidths are large as compared to the conventional CP microstrip antenna. The simulation results verify that the antenna has an impedance bandwidth (VSWR<2) of 36 % and 3 dB AR bandwidth 34 %.
Keywords :
broadband antennas; microstrip antennas; polarisation; 2.1 GHz; VSWR; annular ring patch; axial ratio bandwidth; left hand circular polarized; microstrip antenna; single fed ring antenna; stacked structure; wideband single fed CP antenna; Antenna feeds; Bandwidth; Broadband antennas; Circuits; Frequency; Impedance; Microstrip antennas; Permittivity; Polarization; Slot antennas;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2004. ICMMT 4th International Conference on, Proceedings
Print_ISBN :
0-7803-8401-6
DOI :
10.1109/ICMMT.2004.1411457
