Title :
Circularly polarized square slot antenna for navigation system
Author :
Yixing Zeng ; Yuan Yao ; Junsheng Yu ; Xiaodong Chen ; Youbo Zhang
Author_Institution :
Sch. of Electron. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
This letter presents a circularly polarized square slot antenna used for navigation system. A tuning stub protruded into the slot from the narrowed stripe at the end of the signal strip of the CPW is used to obtain good impedance matching. A measurement showed that the bandwidth below -10dB of the antenna varied from 1.15GHz to 1.71GHz, and the Axial Ratio below 3dB is from 1.14 GHz to 1.75GHz. The radiation pattern is bi-directional.
Keywords :
Global Positioning System; UHF antennas; antenna radiation patterns; coplanar waveguides; electromagnetic wave polarisation; impedance matching; slot antennas; CPW; bidirectional antenna radiation pattern; circularly polarized square slot antenna; frequency 1.14 GHz to 1.75 GHz; impedance matching; navigation system; tuning stub; Antenna measurements; Antenna radiation patterns; Broadband antennas; Dielectric resonator antennas; Slot antennas;
Conference_Titel :
Antennas & Propagation (ISAP), 2013 Proceedings of the International Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-7-5641-4279-7
