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Broadband Slot Cut Modified Rectangular Microstrip Antenna

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Author(s): A. A. Deshmukh | D. Shah | V. Desai | S. Kapadia | K. P. Ray

Journal: International Journal of Computer Applications
ISSN 0975-8887

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

Keywords: Rectangular microstrip antenna | Broadband microstrip antenna | Proximity feeding | pair of rectangular slot

ABSTRACT
The broadband microstrip antenna is realized by cutting a slot at an appropriate position inside the slot. The slot introduces a mode near the fundamental resonance frequency of the patch and realizes broadband response. The broadband patch antenna is also realized by using the proximity feeding technique. Using substrate of thickness greater than 0.08?0, the bandwidth of slot cut patch antennas is increased by using proximity feeding technique. In this paper, a proximity fed broadband rectangular microstrip antenna is discussed. Further the proximity fed broadband two pairs of rectangular slot cut rectangular microstrip antenna is proposed. The pair of vertical and horizontal slots were cut inside and on the non-radiating edges of the patch. These slots modify the higher order TM02 and TM12 mode resonance frequencies of the patch and realize broadband response. A bandwidth of more than 430 MHz with broadside radiation pattern over the operating bandwidth with a gain of 8 dBi is obtained. The design is proposed in 900 MHz frequency band and due to the above antenna characteristics this antenna finds an application in mobile communication environments.
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