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Design and Development of Proximity Coupled Equilateral Triangular Microstrip Antenna for Quad Band Operation and Enhancement of Bandwidth

Mahesh C P, P M Hadalgi

This paper presents the design and development of horizontal I-shape slots loaded on proximity coupled equilateral triangular microstrip antenna (HISPCETMSA) for quad band operation and omnidirectional radiation characteristics. The quad band frequency points are achieved between 2.75GHz to 9.23GHz. The magnitude of operating bandwidth has been enhanced to a maximum value of 14.77% in comparison to that of conventional microstrip antenna which resonates at 3GHz with bandwidth of 6.97%, by varying the length of horizontal I- shape slots on the patch. The proposed antenna presents a method for increasing the bandwidth and gain of an antenna. The design considerations and experimentally measured results are presented and discussed. This antenna may find application in modern wideband wireless communication systems like LTE 2006(Long Term Evolution), IMT (International Mobile Communication) and in radar systems.