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2022-10-03
A Modified Bow-Tie Slot Loaded Cavity Backed Antenna Based on SIW
By
Progress In Electromagnetics Research C, Vol. 125, 25-34, 2022
Abstract
A design of a modified bow-tie slot loaded wideband antenna using a Substrate Integrated Waveguide (SIW) cavity is proposed in this paper. The simple bow-tie slot perturbs the current distribution of the TE120 mode, which generates two hybrid modes, namely odd TE120 and even TE120 modes at 9.6 GHz and 10.8 GHz respectively, but the achieved bandwidth is only 500 MHz (5.2%). To increase the bandwidth, a short rectangular slot is incorporated at the middle of the bow-tie slot, which moves the hybrid odd TE120 mode to 10.2 GHz, near even TE120, which helps to achieve a wide bandwidth of 1.1 GHz ranging 9.9 GHz-11 GHz (10.5%), and also it exhibits a unidirectional radiation pattern. The proposed antenna is fabricated for experimental validation of the modified bow-tie slot antenna. The measured value of bandwidth is 1.1 GHz from 10.1 GHz to 11.2 GHz (10.3%) with a consistent gain of 6.25 dBi, and the variation between co-pol and cross-pol is maximal. Because of the wide bandwidth, high gain and compactness, the suggested antenna is suitable for satellite, radar, and all practical wireless applications of X-band frequencies.
Citation
Anil Kumar Katta Praveen Babu Choppala , "A Modified Bow-Tie Slot Loaded Cavity Backed Antenna Based on SIW," Progress In Electromagnetics Research C, Vol. 125, 25-34, 2022.
doi:10.2528/PIERC22071601
http://www.jpier.org/PIERC/pier.php?paper=22071601
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