Title :
A circularly polarized UHF antenna at 550-700 MHz
Author :
Kulkarni, Shashank D. ; Makarov, Sergey N.
Author_Institution :
Worcester Polytech. Inst., Worcester
Abstract :
The paper reports on a design of a low-cost circularly polarized turnstile bowtie antenna in the low UHF band (550 MHz-700 MHz) that has a wide impedance and polarization bandwidth (in excess of 20% at zenith assuming 3 dB axial ratio). In addition, the antenna should have a near omnidirectional RHCP radiation pattern in the upper hemisphere and a good front to back gain ratio.
Keywords :
UHF antennas; antenna radiation patterns; bow-tie antennas; electromagnetic wave polarisation; bowtie antenna; circularly polarized UHF antenna; frequency 550 MHz to 700 MHz; radiation pattern; Antenna radiation patterns; Bandwidth; Broadband antennas; Dipole antennas; Frequency; Impedance matching; Polarization; Resonance; Transmission line antennas; UHF antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0877-1
Electronic_ISBN :
978-1-4244-0878-8
DOI :
10.1109/APS.2007.4396162
