Cavity Backed Substrate Integrated Waveguide Horn Antenna with Enhanced Gain for 5G Applications

In this paper, cavity-backed substrate integrated waveguide (SIW) H-plane horn antenna with enhanced gain for 5G applications is proposed. A coaxial probe has been used to feed the SIW H-plane horn antenna. A metallic cavity has been used to enhance the gain of the antenna. The antenna with cavity shows almost 2 dB enhanced gain over the bandwidth as compared to SIW H-plane horn antenna without cavity. The impedance bandwidth for is 5% (from 25.2 to 26.5 GHz). A peak gain of 10.4 dBi at 25.5 GHz has been achieved. This antenna finds applications in wireless communication systems for 5G.