Title :
A compact two way diversity microstrip Upatch antenna
Author :
Douglas, M.G. ; Johnston, R.H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
Abstract :
The Upatch antenna provides an alternative to the halfwave square patch antenna. This antenna occupies one third to one quarter of the surface area of the square halfwave patch antenna but has a more complicated feed structure. The bandwidth is similar but the radiation pattern is more omnidirectional. The isolation between the elemental antennas is about 20dB. The antenna is oriented to operate as a polarization diversity antenna. It can be used equally well as a pattern diversity antenna (with patterns of cos/spl theta/, sin/spl theta/) with vertical polarization by positioning the ground plane of the antenna to be coincident with the xy plane.
Keywords :
antenna radiation patterns; electromagnetic wave polarisation; microstrip antennas; bandwidth; compact two way diversity microstrip Upatch antenna; elemental antennas; feed structure; ground plane; halfwave square patch antenna; pattern diversity antenna; polarization diversity antenna; radiation pattern; Antenna feeds; Frequency; Grounding; Microstrip antenna arrays; Microstrip antennas; Microstrip resonators; Patch antennas; Polarization; Resonance; Slot antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1995. AP-S. Digest
Conference_Location :
Newport Beach, CA, USA
Print_ISBN :
0-7803-2719-5
DOI :
10.1109/APS.1995.530180
