Gain enhancement in double L-shaped slot multiple input multiple output antenna comparing with single L-shaped slot antenna for ultra wideband applications

Using a FR4 epoxy dielectric substrate, this research constructs and tests a dual-L-slot MIMO antenna operating from 5 GHz to 11 GHz. The antenna outperforms a single-L-shaped slot MIMO antenna in terms of gain. Two separate L-shaped slot Multiple Input Multiple Output (MIMO) antenna designs were evaluated for frequency and gain by the ten individuals of Group 1. Both Group 1 and Group 2 followed the identical protocol, but with a lower sample size of 10. Along with a cutoff of 0.05%, there are two L-shaped slots with an 80% G power value and a 95% confidence interval. In contrast to the 5.092 dB gain achievable with a single L-shaped slot antenna, a twin L-shaped slot MIMO antenna allows for an 8.9140 dB gain. The single L-shaped slot MIMO antenna working at 11 GHz and the twin L-shaped slot MIMO antenna working at 5.5 GHz both achieved the maximum gain. A p-value less than 0.05 (meaningful threshold of significance) has been noted. The unique antenna design that stands out among them is the dual L-shaped slot MIMO antenna, which offers remarkable gain augmentation at 11 GHz.