Title :
Beam antenna with circular polarization rotation switching based on passive components
Author :
Porokhnyuk, Andrey ; Ueda, Tetsuya ; Kado, Yuichi ; Itoh, Tatsuo
Author_Institution :
Dept. of Electron., Kyoto Inst. of Technol., Kyoto, Japan
Abstract :
A new type of passive circularly polarized beam antenna with high radiation efficiency and polarization rotation switching capability is proposed, based on phase-nonreciprocal metamaterial. The proposed design implements circular polarization rotation switching by means of an external dc magnetic system non-interfering with the signal path. The planar antenna with a working area of less than 6 cm in diameter demonstrated radiation with 11 dBi gain in broadside direction and circular polarization with axial ratio higher than 0.8 at 7.1 GHz.
Keywords :
antenna radiation patterns; metamaterial antennas; planar antennas; axial ratio; broadside direction; circular polarization rotation switching; external dc magnetic system; frequency 7.1 GHz; gain 11 dB; high radiation efficiency; passive circularly polarized beam antenna; passive components; phase-nonreciprocal metamaterial; planar antenna; polarization rotation switching capability; signal path; Dipole antennas; Magnetic materials; Metamaterials; Polarization; Power transmission lines; Switches; circular polarization; ferrite devices; leaky wave antennas; metamaterials; nonreciprocity; polarization switching;
Conference_Titel :
Microwave Conference (EuMC), 2014 44th European
Conference_Location :
Rome
DOI :
10.1109/EuMC.2014.6986436
