3 years ago

Broadband Variations of Isosceles Triangular Microstrip Antennas: Analyzing the Broadband Response

Shafin Nagarbowdi, K.P. Ray, , Amit A. Deshmukh
In this article, variations of isosceles-triangular microstrip antennas (ITMSAs) are analyzed for their broadband response. Specifically, results show that an increased isosceles angle optimizes the spacing between the TM10 and TM11 resonant modes of an isosceles patch, yielding a maximum bandwidth (BW) of more than 0.8 GHz (>55%). A further increase in the BW of the isosceles patch is obtained by using its rectangular-slot- or U-slot-cut variations. The slot optimizes the spacing of the third-order TM20 mode with respect to the TM10 and TM11 modes, increasing the BW almost to 1 GHz (~65%). In addition, the proposed ITMSAs show a broadside radiation pattern with a peak gain of more than 8 dBi.
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