Title :
A single-feeding circularly polarized microstrip antenna with the effect of hybrid feeding
Author :
Kim, Hyungrak ; Lee, Byoung Moo ; Yoon, Young Joong
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
fDate :
6/25/1905 12:00:00 AM
Abstract :
A single series feed cross-aperture coupled microstrip antenna with the effect of hybrid feeding is proposed and demonstrated. To understand this antenna better, the characteristics according to the variation of parameters are shown. This proposed antenna has the following advantages of the effect of hybrid feeding: improved axial ratio bandwidth (4.6%); high gain (8 dBi); flat 3 dB gain bandwidth (above 16.7%). In measured radiation patterns, we have 3 dB beamwidth of /spl plusmn/30/spl deg/ and good F/B (front to back ratio) of 20 dB.
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; microstrip antennas; 110 MHz; 2.4 GHz; 240 MHz; 8 dB; axial ratio bandwidth; beamwidth; circularly polarized microstrip antenna; gain; gain bandwidth; hybrid feeding; radiation patterns; series feed; Antenna feeds; Antenna radiation patterns; Bandwidth; Dielectric substrates; Global Positioning System; Microstrip antennas; Polarization; Radar antennas; Satellite antennas; Wireless communication;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2003.813382
