Design of Multiband Slot Antenna using SIW Technology

Design and analysis of multiband slot antenna using SIW technology explained in this work. This antenna is designed and simulated using High frequency structure simulator (HFSS2016) software and it uses substrate integrated waveguide technology with three different radiating slots with a cavity back side to produce resonance. The proposed structure radiates at three different frequencies 4.21GHz, 5.21GHz, 5.8GHz useful for wireless communication applications. It consists of one annular slot and two transverse slots and are fed with a coaxial probe, two distinct microstrip lines and higher isolation (i.e., <; -20dB) can be achieved among the ports, which realizes a multiband functionality. Moreover, the antenna shows a gain values of 7.5dB, 6.7dB, 7.5dB at the three resonating frequencies.