Title :
Wideband circularly polarized microstrip-parallel strip-fed spiral antenna
Author_Institution :
Department of Electrical Engineering, National Central University, Jhongli, Taoyuan, 32001, Taiwan
Abstract :
A microstrip-parallel strip-fed circularly polarized spiral antenna is investigated. A wideband microstrip to parallel strip transition is designed in order to feed the spiral antenna. The transition shows a back-to-back return loss of better than 10 dB from 0.045 to 20 GHz except for a ripple at 2 GHz, while the back-to-back insertion loss is less than 2.4 dB. The final antenna shows a return loss of better than 10 dB from 2.5 to 13.5 GHz. The antenna axial ratio is better than 2.2 dB from 5 to 12 GHz.
Keywords :
"Spirals","Microstrip antennas","Microstrip","Antenna measurements","Broadband antennas","Antenna feeds"
Conference_Titel :
Synthetic Aperture Radar (APSAR), 2015 IEEE 5th Asia-Pacific Conference on
DOI :
10.1109/APSAR.2015.7306150
