Study the Effect of Ground on Circular Loop Patch Antenna (CLPA)

This proposed article presents multiband circular ring loop patch antenna (CLPA). The design is simulated using HFSS tool and studied by varying the ground patch size (area). The substrate material FR-4 is used and studied for the frequency range from 1 to 30 GHz in the proposed article. After analysing the effect of change in ground (GND), it is found that multiband characteristics slightly change in terms of S11 (dB) parameter below 20 GHz and above 20 GHz bandwidth increases. The CLPA shows eight to ten resonating frequency bands. Simulated data show −40.98 (dB) reflection coefficient at the frequency 15.88 GHz in design 1; similarly, design 2, design 3, design 4, design 5, and design 6 obtain maximum reflection coefficient −33.76 (dB) at 10.70 GHz, −37.27 (dB) at 27.65 GHz, −36.43 (dB) at 10.70 GHz, −37.08 (dB) at 21.33 GHz, and −29.11 (dB) at 15.35 GHz. The proposed antenna can be applied in numerous wireless applications by selecting different ground size.