Title :
Cylindrical-rectangular microstrip patch antenna for circular polarization
Author :
Wong, Kin-Lu ; Ke, Shyh-Yeong
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-sen Univ., Kaohsiung, Taiwan
fDate :
2/1/1993 12:00:00 AM
Abstract :
The circular polarization condition for a rectangular microstrip patch antenna on a thin cylindrical substrate is investigated. The theoretical study is based on the modal-expansion theory, which is valid for the thin-substrate case. Numerical results for the aspect ratio of the cylindrical-rectangular patch, the optimal feed point for minimum voltage standing wave ratio and the 3-dB bandwidth for circularly polarized radiation are analyzed. Effects of the curvature on the circular polarization condition are also discussed
Keywords :
antenna theory; electromagnetic wave polarisation; microstrip antennas; 3-dB bandwidth; aspect ratio; circular polarization; curvature effects; cylindrical-rectangular patch; microstrip patch antenna; minimum voltage standing wave ratio; modal-expansion theory; numerical results; optimal feed point; thin cylindrical substrate; Bandwidth; Electromagnetic wave polarization; Feeds; Geometry; Magnetic materials; Microstrip antennas; Patch antennas; Probes; Resonant frequency; Voltage;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
