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2012 (Vol. 4, Issue: 12)
Article Information:

Improved Radiation and Bandwidth of Triangular and Star Patch Antenna

M. Ramkumar Prabhu, V. Reji and A. Sivabalan
Corresponding Author:  M. Ramkumar Prabhu 

Key words:  Bandwidth enhancement, radiation properties, star patch, triangular antenna, , ,
Vol. 4 , (12): 1740-1748
Submitted Accepted Published
January 08, 2012 February 06, 2012 June 15, 2012
Abstract:

This study presents a hexagonal shape Defected Ground Structure (DGS) implemented on two element triangular patch microstrip antenna array. The radiation performance of the antenna is characterized by varying the geometry and dimension of the DGS and also by locating the DGS at specific position which were simulated. Simulation and measurement results have verified that the antenna with DGS had improved the antenna without DGS. Measurement results of the hexagonal DGS have axial ratio bandwidth enhancement of 10 MHz, return loss improvement of 35%, mutual coupling reduction of 3 dB and gain enhancement of 1 dB. A new wideband and small size star shaped patch antenna fed capacitively by a small diamond shape patch is proposed. To enhance the impedance bandwidth, posts are incorporated under the patch antenna. HFSS high frequency simulator is employed to analyze the proposed antenna and simulated results on the return loss, the E- and H-plane radiation patterns and Gain of the proposed antenna are presented at various frequencies. The antenna is able to achieve in the range of 4-8.8 GHz an impedance bandwidth of 81% for return loss of less than-10 dB.
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  Cite this Reference:
M. Ramkumar Prabhu, V. Reji and A. Sivabalan, 2012. Improved Radiation and Bandwidth of Triangular and Star Patch Antenna.  Research Journal of Applied Sciences, Engineering and Technology, 4(12): 1740-1748.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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