Title :
On the differential feeding technique for circularly polarized resonant antennas
Author :
Caso, R. ; Buffi, Alice ; Nepa, Paolo
Author_Institution :
Dept. Inf. Eng., Univ. of Pisa, Pisa, Italy
Abstract :
The application of the differential feeding technique to circularly polarized (CP) resonant antennas is investigated in this paper. For every single-feed CP resonant antenna layout exhibiting two symmetry planes, such technique can be fruitfully implemented to get perfectly symmetrical radiation patterns around the main beam direction. Through numerical simulations relevant to a couple of single-feed circularly polarized antennas presented in the open literature, it is shown that the differential feeding technique can reduce significantly the axial ratio values in the antenna beamwidth.
Keywords :
antenna feeds; antenna radiation patterns; microwave antennas; numerical analysis; antenna beamwidth; axial ratio values; beam direction; circularly polarized resonant antennas; differential feeding technique; numerical simulations; single-feed CP resonant antenna layout; symmetrical radiation patterns; symmetry planes; Antenna feeds; Antenna radiation patterns; Broadband antennas; Directive antennas; Layout; Patch antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6904560