DocumentCode :
2346962
Title :
Aperture-coupled microstrip antennas using reflector elements for wireless communications
Author :
Targonski, S.D. ; Pozar, D.M. ; Waterhouse, R.B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA
fYear :
1998
fDate :
1-4 Nov 1998
Firstpage :
163
Lastpage :
166
Abstract :
The design advantages provided by aperture-coupled microstrip patches can be very useful in wireless communications applications. A way to improve the front-to-back ratio is to place a microstrip antenna element behind the aperture as a reflector. Proximity coupling between the feed line and the reflecting element is negligible due to the thick foam substrate used, allowing use of the reciprocity method of analysis. Also, the directive patch elements are shielded from the reflector by the ground plane. Therefore, only interactions between the reflector and the aperture need to be modeled, resulting in a simple analysis. For aperture-coupled patch designs with a front-to-back ratio of 10 dB or greater, the introduction of a reflecting element has a negligible effect on the input impedance of the antenna. Therefore, a reflector element can readily be incorporated into existing designs
Keywords :
antenna radiation patterns; aperture antennas; microstrip antennas; mobile radio; reflector antennas; aperture-coupled microstrip antennas; foam substrate; front-to-back ratio; input impedance; microstrip patches; reciprocity method; reflector elements; wireless communications; Antennas and propagation; Aperture antennas; Aperture coupled antennas; Bandwidth; Design engineering; Isolation technology; Microstrip antennas; Reflector antennas; Resonance; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation for Wireless Communications, 1998. 1998 IEEE-APS Conference on
Conference_Location :
Waltham, MA
Print_ISBN :
0-7803-4955-5
Type :
conf
DOI :
10.1109/APWC.1998.730683
Filename :
730683
Link To Document :
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