volume | PIER Journals

Abstract

In this paper, the authors propose a small substrate integrated waveguide (SIW) slot antenna for future fifth generation (5G) communication systems. It works at 28 and 38 GHz. The proposed geometry consists of horizontal and vertical vias as well as a central circular ring. The cut slots in the etched center circular ring create a significant capacitive loading effect, lowering the lower resonating mode. Further, the introduced circular ring slot resonates on TE₁₀₁ and TE₁₀₂ modes at 28 and 38 GHz, respectively. The measured impedance bandwidths are 27.77-28.02 GHz and 37.99-38.10 GHz. Peak gains in the lower and upper bands are measured to be 6.96-7.15 dBi and 8.10-8.22 dBi, respectively. At 28 and 38 GHz, the observed half-power beam-widths (HPBWs) are 74.5˚ and 79.2˚, respectively. Considering these performance results, such as single-layer dual-bands, high gain, small size, and good radiation efficiency, the designed SIW slot antenna is suitable for future millimeter-wave 5G applications.

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Dr. Umesh Singh

Dr. Rajesh Mishra