Title :
CPW-fed wideband circularly-polarized antenna
Author :
Xueshi Ren ; Ruina Lian ; Hao Zhang ; Yingzeng Yin ; Gao, Steven
Author_Institution :
Sci. & Technol. on Antenna &Microwave, Xidian Univ., Xi´an, China
fDate :
March 30 2015-April 1 2015
Abstract :
A novel shorted CPW-fed slot antenna with wideband circular polarization characteristic is proposed in this letter. The proposed antenna consists of a bi-directional radiation slot antenna printed on a single substrate and a reflector for unidirectional radiation. A half circle slot and a slim slot are involved to optimize the axial ratio (AR) bandwidth and taper on the feeding line is utilised to further improve the impedance bandwidth. The measured results show that the antenna has the impedance bandwidth (S11 <; -10dB) of 12.6% and the AR bandwidth (AR <; 3dB) of 12.7%. The RHCP gain in the main radiation direction is 7.5 dBi..
Keywords :
antenna radiation patterns; directive antennas; microstrip antennas; slot antennas; AR bandwidth; CPW fed slot antenna; CPW fed wideband circularly polarized antenna; axial ratio; bidirectional radiation slot antenna printed; half circle slot; single substrate; slim slot; unidirectional radiation; wideband circular polarization; Antenna measurements; Bandwidth; Broadband antennas; Frequency measurement; Microstrip antenna arrays; Microwave antenna arrays; Slot antennas; CPW-fed; antenna; circularly-polarized; slot; wideband;
Conference_Titel :
Wireless Symposium (IWS), 2015 IEEE International
Conference_Location :
Shenzhen
DOI :
10.1109/IEEE-IWS.2015.7164601
