Design of Substrate Integrated Waveguide Back to Back π-Shaped Slot Antenna for 60 GHz Applications

In this paper, proposed back to back π-shaped slot antenna with SIW cavity, which is connected to 50 Ω microstrip line feed and material Rogers RT/Duroid 5880 with \(\in_{r} = 2.2\), is used to develop proposed structure. CST software is used to simulate the proposed antenna and observed the results like reflection coefficient, VSWR, gain, and radiation patterns. This structure will provide bandwidth of 3.3 GHz with respect to −10 dB reference line and resonant frequency is 60 GHz and preserves 47.14% in between the frequency range 57–64 GHz with respect to impedance bandwidth and VSWR (2:1). The reflection coefficient, gain, directivity, transmission efficiency, and radiation efficiency of proposed antenna at 60 GHz are −35.644 dB, 5.85 dBi, 5.68 dB, 78%, and 96%.