Title :
Simplified low-profile metamaterial-based spiral antenna without a balun circuit
Author :
Nakano, H. ; Miyake, J. ; Sakurada, T. ; Yamauchi, J.
Author_Institution :
Sci. & Eng., Hosei Univ., Koganei, Japan
Abstract :
A spiral antenna excited by a coaxial line without using a balun circuit is designed as a low-profile circularly polarized (CP) radiation element. The antenna is composed of only one arm, which has metamaterial (MTM) properties. Five key frequencies are introduced for the antenna design. It is found that the MTM-based spiral operates as a dual-band anti-CP radiation element.
Keywords :
antenna radiation patterns; coaxial cables; metamaterial antennas; spiral antennas; MTM properties; antenna design; balun circuit; coaxial line; dual-band anti CP radiation element; low-profile circular polarized radiation element; metamaterial properties; simplified low-profile metamaterial-based spiral antenna; Dual band; Feeds; Impedance matching; Metamaterials; Spirals; anti-circularly polarized radiation; dual-band; metamaterial-based arm; spiral antennas;
Conference_Titel :
Antennas and Propagation (APCAP), 2012 IEEE Asia-Pacific Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-0666-9
DOI :
10.1109/APCAP.2012.6333149
