Title :
Low-profile broadband spiral antenna with meta-materials
Author :
Louertani, Karim ; Tan-Huat Chio
Author_Institution :
Temasek Labs., Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
In this paper, a wideband and low-profile spiral antenna with unidirectional radiation pattern is proposed. A very thin Meta-material (MTM) absorber is used in place of a conventional absorber on top of a ground plane to achieve unidirectional radiation. The MTM absorber is made of circular patches of various sizes on a magnetic substrate. Despite a short distance between the spiral and the ground plane, good antenna characteristics such as reflection coefficient, polarization and gain have been achieved.
Keywords :
antenna radiation patterns; metamaterial antennas; spiral antennas; MTM absorber; circular patches; low profile broadband spiral antenna; magnetic substrate; meta material absorber; metamaterials; reflection coefficient; unidirectional radiation; unidirectional radiation pattern; Antenna radiation patterns; Bandwidth; Broadband antennas; Gain; Resonant frequency; Spirals;
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.2014.6904991
