Simulation and Comparison of RF Performance of the Novel Inverted F SIW Antenna with Triangular Split Rings SIW Antenna for X Band Applications

Aim: To evaluate the RF performance of X band application using an inverted F SIW(Substrate Integrated Waveguide) antenna and triangular split rings SIW antenna on 50 Ω characteristics impedance at 10 GHz. Materials and Methods: The effectiveness of two new antenna designs, the inverted F SIW antenna and the triangular split ring SIW antenna, was assessed in regards to their radio frequency (RF) performance. This included analysis of return loss, voltage standing wave ratio (VSWR), and gain. The antennas were tested on a 50 Ω impedance with specific values for alpha (0.05) and beta (0.2), and a pre-test power of 80%. The total sample size is 54. Result: In comparison to a triangular split rings SIW antenna (return loss: -13.4897 dB, VSWR:1.5368, gain:2.75 dBi, bandwidth:28.1 MHz), an inverted F SIW antenna performs substantially better (return loss: -24.4889 dB, VSWR: 1.126, gain: 4.76 dBi, bandwidth: 89.4 MHz). Inverted F and triangular split ring SIW antennas both have optimized dimensions of 19.8 mm x 16.8 mm. Significant RF performance of p<0.05 is obtained. Conclusion: The RF performance of the inverted F SIW antenna appears to be higher than that of the triangular split rings SIW antenna.