Title :
Investigation into Omni-directional, Circularly Polarized radiation in electrically small antennas
Author :
Rhodes, David S. ; Le, Yen B. ; Sungkyun Lim
Author_Institution :
Dept. of Electr. Eng., Georgia Southern Univ., Statesboro, GA, USA
Abstract :
Two types of antennas which produce Omni-directional Circularly Polarized radiation from a single feed are presented. The first antenna is a spiral top loaded crossed dipole and the second antenna is a conical helix crossed dipole. Both antennas are reduced in size to a kr of 0.3 where Left-Hand Circular Polarization (LHCP) spans across 360° of the axial ratio radiation pattern. The S11 of both antennas match below -10 dB at 450 MHz to a 50 Ω characteristic impedance.
Keywords :
antenna radiation patterns; dipole antennas; omnidirectional antennas; LHCP; axial ratio radiation pattern; conical helix crossed dipole; electrically small antennas; frequency 450 MHz; gain 10 dB; left hand circular polarization; omnidirectional circularly polarized radiation; second antenna; Dipole antennas; Gain; Helical antennas; Loaded antennas; Spirals; Wires;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-5315-1
DOI :
10.1109/APS.2013.6711046
