Title :
A new omnidirectional CP patch antenna
Author :
Regui Yang ; Mittra, R. ; Itoh, M.
Author_Institution :
Electromagn. Commun. Lab., Illinois Univ., Urbana, IL, USA
Abstract :
Circularly-polarized antennas with near-omnidirectional patterns find important applications in mobile communication. Conventional microstrip patch antennas not only exhibit a 10 to 15 dB loss in gain near the horizon but a substantial deterioration of the CP performance as well. We describe a new design for a patch-array antenna which fulfills both the gain and polarization specifications. The antenna comprises two nearly square microstrip patches that are stacked in the vertical direction and are fed in phase. A two-way power divider is used to deliver power equally to the two patches.
Keywords :
antenna feeds; electromagnetic wave polarisation; land mobile radio; microstrip antenna arrays; mobile antennas; power dividers; antenna feeder; circularly-polarized antennas; gain; mobile communication; omnidirectional CP patch antenna; patch-array antenna; polarization specifications; square microstrip patches; two-way power divider; Antenna arrays; Antenna feeds; Bandwidth; Directive antennas; Impedance; Microstrip antennas; Mobile communication; Patch antennas; Power dividers; Power system modeling;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.408177
