Title :
Omnidirectional circularly polarized antenna using zeroth-order resonance of metamaterial transmission line
Author :
Park, Byung-Chul ; Lee, Jeong-Hae ; Tae, Heung-Sik
Author_Institution :
Dept. of Electron. Inf. & Commun. Eng., Hongik Univ., Seoul, South Korea
Abstract :
The omnidirectional circularly polarized (CP) antenna using a circular mushroom structure with curved branches is proposed. The antenna uses the zeroth-order resonance (ZOR) mode of epsilon negative (ENG) transmission line (TL) to obtain a vertical polarization and an omnidirectional radiation pattern. Also, the horizontal polarization is obtained by the curved branches. The measured 3 dB axial ratio is observed in 0–15° and 202–360° of an azimuthal plane.
Keywords :
Antenna measurements; Antenna radiation patterns; Azimuthal plane; Delay lines; Feeds; Metamaterials; Mobile antennas; Polarization; Resonance; Transmission line antennas;
Conference_Titel :
Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Conference_Location :
Barcelona, Spain
Print_ISBN :
978-1-4244-6431-9
Electronic_ISBN :
978-84-7653-472-4
