High Gain Frequency-Selective Surface Millimeter Magneto-Electric Dipole Using Printed-Ridge Gap Waveguide for 5G Wireless Applications

This paper presents a magneto-electric (ME) dipole antenna based on printed ridge gap waveguide (PRGW) technology, designed for Ka-band operation at 30 GHz. The proposed antenna achieves a return loss of −12 dB, isolation of -26.5 dB, and a bandwidth of about 10 %, as verified through CST and HFSS simulators. To enhance its performance, a $5 \times 7$ circular periodic frequency selective surface (FSS) layer is integrated above the ME-dipole. This configuration results in gain values of 16.5 dB and 17.6 dB at ports 1 and 2, respectively, making it a suitable candidate for high-frequency applications requiring high gain and efficient isolation.