Design and analysis of an novel narrowband microstrip rectangular patch antenna by varying the FR4 substrate height for efficient return loss in comparison with circular patch antenna

The aim of study is to design and analyse the novel narrowband rectangular microtrip patch antenna by varying FR4 substrate height for efficient return loss and it is compared with circular patch antenna. The design of the antenna is done in the simulation software called Computer Simulated Technology. Rectangular patch antenna and circular patch were considered as group 1 and group 2. The required parameters for the designing the antenna are FR4 substrate height and dielectric constant. For the rectangular patch antenna FR4 Substrate height is increased from 1.6mm to 2.5mm and for circular patch antenna the FR4 height is taken as 3.2mm. The return loss of antenna is improved by varying the FR4 substrate height from -45.14dB to -28.25dB and compared with the circular patch antenna of return loss -30.86dB. The obtained significant value for return loss of narrowband is (p