A single-feed star-slot-coupled patch antenna with circular polarization

Author

Stark, Alexander ; Jacob, Arne F.

Author_Institution

Inst. fur Hochfrequenztech., Tech. Univ. Hamburg-Harburg, Hamburg, Germany

fYear

2010

fDate

15-17 March 2010

Firstpage

70

Lastpage

73

Abstract

A single-feed K-Band patch antenna featuring circular polarization is presented. The proposed star-slot-coupling structure offers both polarization and input impedance adjustment capability. In combination with a truncated radiating element high-purity polarization is achievable at the operating frequency. Simulation shows that an axial ratio (AR) as low as 0.05 dB can be achieved. The design is robust against fabrication tolerances. Measurement results of a left handed circularly polarized (LHCP) antenna are presented. They show good agreement with simulation. Typically, the bandwidth reaches 10% for 10 dB matching and 4% for 6 dB axial ratio.

Keywords

antenna feeds; microstrip antennas; polarisation; slot antennas; LHCP antenna; circular polarization; high-purity polarization; input impedance adjustment capability; left handed circularly polarized antenna; single-feed K-Band patch antenna; single-feed star-slot-coupled patch antenna; star-slot-coupling structure; Bandwidth; Broadband communication; Feeds; Frequency; Impedance; Jacobian matrices; K-band; Patch antennas; Polarization; Satellite communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2010 German

Conference_Location

Berlin

Print_ISBN

978-1-4244-4933-0

Electronic_ISBN

978-3-9812668-1-8

Type

conf

Filename

5498234