Design of magnetic antenna with dual circular polarizations

Author

Hong, Wanchu ; Wang, Hung-Hsiang ; Lin, Yu-De ; Kitazawa, Toshihide

Author_Institution

Nat. Changhua Univ. of Educ., Changhua

fYear

2006

fDate

12-15 Dec. 2006

Firstpage

2063

Lastpage

2066

Abstract

This paper proposes a novel magnetic antenna with dual circular polarizations. Two circular loop antennas are arranged in spatially mutual orthogonality. The differential branch-line coupler, which can generate a set of four quadrature phases of 0, 90, 180, and 270 degrees with equal amplitude, is designed and used to excite the magnetic loop antenna. Right-handed or left-handed circular polarization (RHCP or LHCP) is determined by the sign of relative phase difference. The numerical results of the scattering parameters and the radiation patterns are presented.

Keywords

S-parameters; antenna radiation patterns; polarisation; waveguide couplers; Right-handed circular polarization; circular antennas; differential branch-line coupler; dual circular polarizations; left-handed circular polarization; magnetic antenna; radiation patterns; scattering parameters; spatially mutual orthogonality; Antenna feeds; Communication system control; Couplings; Design engineering; Dipole antennas; Impedance matching; Microwave antennas; Microwave communication; Polarization; Satellite antennas; circular polarization; differential branch line coupler; loop antenna; magnetic antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. APMC 2006. Asia-Pacific

Conference_Location

Yokohama

Print_ISBN

978-4-902339-08-6

Electronic_ISBN

978-4-902339-11-6

Type

conf

DOI

10.1109/APMC.2006.4429819

Filename

4429819