Title :
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
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;
Conference_Titel :
Microwave Conference, 2010 German
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4933-0
Electronic_ISBN :
978-3-9812668-1-8
