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Broadband Shorted Plate Proximity Fed Rectangular Microstrip Antenna

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Author(s): A. A. Deshmukh | Sumit Ranka | F. Shah | M. Parekh | K. P. Ray

Journal: International Journal of Computer Applications
ISSN 0975-8887

Volume: icwet;
Issue: 5;
Date: 2012;
Original page

Keywords: Rectangular microstrip antenna | Broad band microstrip antenna | shorted plate microstrip antenna | pair of rectangular slots

ABSTRACT
The compact microstrip antenna is realized by placing the shorting plate or shorting post along the zero field line at the fundamental mode of conventional half wavelength microstrip antenna. The shorted plate microstrip antenna has higher bandwidth as compared to the conventional microstrip patch. The bandwidth of microstrip antenna is increased by using proximity feeding technique. In this paper the broadband proximity fed configurations of shorted plate rectangular microstrip antennas are discussed. They give bandwidth of more than 350 MHz. Further a pair of rectangular slots cut broadband shorted plate proximity fed rectangular microstrip antenna is proposed. The proposed configuration gives a bandwidth of nearly 480 MHz with a gain of more than 5 dBi over the VSWR bandwidth. Since the shorted patch is used, the antenna shows maximum in the radiation pattern in the end-fire direction.
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