Design of single feed microstrip antenna for long distance radio telecommunications with size reduction of 45.70%

Abstract

We are designing a single layer single feed microstrip antenna with an increased frequency ratio. We change the different feed locations for getting the better results. First, we apply feed for (2, 2.5) location. But we are getting the resonant frequency at 8.97 GHz which is more than the conventional antenna structure. So, we change our feed location from (2, 2.5) to (1, -1) position and we achieve the resonant frequency at 5.35 GHz and we also achieve some multiple frequency. Here we use the PTFE substrate with dielectric constant of 4.4. We also achieve an increased frequency ratio of about 10% with absolute gain of 4 dBi (gain of isotropic antenna) and we are able to get -3 dB beam-width of about 170.32⁰which is a broad beam for the application which is intended. We also achieve lower VSWR for this paper.