Design of Novel H-shaped SIW Antenna and Comparing the VSWR and Return Loss Performances with SIW Bow-Tie Antenna for the Applications in X-Band

Aim: Effectively evaluate the VSWR and the return loss properties of the newly built H-shaped SIW antenna and SIW Bow-Tie antenna over 10 GHz frequency with a 50-ohm characteristic impedance. On
$\mathbf{50}\quad \boldsymbol{\Omega}$
characteristic impedance, the H-shaped SIW antenna (n=27) and the SIW Bow-Tie antenna (n=27) return loss and VSWR values. It is necessary to use a total sample size of 54 when the alpha level is 0.05, the beta level is 0.2, and the pretest power is 0.8 (or 80
^%
). The novel H-shaped SIW antenna with return loss -32.9009 dB, VSWR with 1.0463, bandwidth with 204.8 MHz and SIW Bow-Tie antenna with return loss -31.9265 dB, VSWR with 1.0520, bandwidth with 180 MHz. H-shaped SIW antennas and SIW Bow-Tie antennas have ideal
$\mathbf{19.8}\ \mathbf{mm} \times \mathbf{16.8}\ \mathbf{mm}$
size. Statistical analysis indicated that these results are highly significant and the p-value for VSWR is 0.000 (p<0.05), and the p value for return loss is 0.033 (p<0.05). The novel H-shaped SIW antenna has a higher VSWR and return loss than the Bow-Tie shaped SIW antenna.