Broadband and High-Gain SIW-Fed Cavity-Backed Patch Antenna for the 60 GHz Spectrum

In this paper, we introduce a new design for a high-gain, wide-band Substrate Integrated Waveguide (SIW) cavity-backed antenna, specifically optimized for millimeter-wave applications at 60 GHz. The proposed antenna configuration incorporates a SIW structure with a backed cavity, accommodating an array of four segmented circular patch elements. The antenna is designed and simulated using the High-Frequency Structure Simulator (HFSS). This design achieves a bandwidth of 27%, covering the frequency range from 54.7 GHz to 71.1 GHz, and delivers a peak gain of 14.19 dBi. These simulation results underscore the antenna's suitability for practical deployment in future wireless communication systems, showcasing significant improvements in performance metrics such as high gain, wide bandwidth, and low side lobe levels. These attributes are essential for advanced millimeter-wave applications, ensuring robust and efficient operation.