A Compact Wideband Antenna Using Partial Ground Plane with Truncated Corners, L-Shaped Stubs and Inverted T-Shaped Slots

Abstract

The design of a wideband antenna using truncated corners partial ground plane loaded with L-shaped stubs and inverted T-shaped slots has been presented in this manuscript. The different concepts and structures related to antenna designing have been employed to attain the optimized model of antenna. L-shaped stubs and inverted T-shaped slots incised in the structure of antenna improve the impedance matching and bandwidth of the proposed antenna. A fed 50 Ω microstrip line has been applied to the proposed structure for attaining distinct performance parameters like reflection coefficient, gain, and radiation pattern. The distinct structures of proposed antenna have been juxtaposed, and it is found that the structure with L-shaped stubs and inverted T-shaped slots shows improved antenna performance parameters. The designed antenna exhibits the bandwidth of 133.04% (3.14–15.62 GHz) and 16.96% (18.56–22.0 GHz) with improved reflection coefficient and gain. The proposed antenna has also been fabricated and tested for the validation of simulated and measured results, and found in good agreement with each other. The design of proposed antenna is carved on a low cost thick substrate with compact electrical size of 0.566λ × 0.452λ × 0.0301λ mm3 at 5.45 GHz frequency and can be used for different wireless applications in the frequency range 3.14–15.62 GHz and 18.56–22.0 GHz.