S-Slot Antenna Design for the Application of ISM in Order to Obtain High Gain

The primary objective of the research is to enhance the gain of an S slot antenna in multiple bands at frequencies of 2.1 GHz and 2.5 GHz, and to compare it with a rectangular patch antenna for ISM band applications. What is being recommended in terms of research materials and procedures can be broken down into two categories. Group 1 consists of rectangular antennas used in experiments, while Group 2 consists of T-slot antennas (Control group). In the proposed antenna design, the substrate height is 1.6 mm and substrate material is FR4, the relative permittivity is
$\boldsymbol{\varepsilon}_{\boldsymbol{r}}=\mathbf{4}$
, the base height is 0.035 mm, and the base material is copper. With an 80% probability, the samples are determined using the statistical tool G-power. Result: This S slot-antenna is operating RF of 2.1 GHz and 2.5 GHz with an improved gain of 3.9682 dB and 5.0707 dB respectively. This proposed antenna provides a higher gain compared to a rectangular antenna. It radiates energy with gain in all directions for data transmission without losses. The significance value is 0.01 which is lesser than 0.05. The circular patch antenna showed better performance, with a lower return loss, compared to the square array antenna.