Performance Analysis of Frequency Dependent and Frequency Independent Microstrip Patch Antennas

A miniature and low profile frequency dependent and frequency independent microstrip patch antennas are proposed in the paper. An idea of converting frequency dependent microstrip patch into frequency independent microstrip patch by altering the dimensions, relative spacing and with suitable arrangement of parasitic patches is presented and discussed. The performance analysis and design details of frequency dependent and frequency independent patch antennas are presented in the paper. To determine the mathematical calculations of critical microstrip patch dimensions and the corresponding optimized design of both antennas was carried out using Ansys HFSS solver. The parametric studies with respect to various substrate materials, substrate thickness and some design parameters of both the antennas are simulated and presented in the paper. The proposed antennas are fabricated and tested. The Simulation and Experimental results are compared. Based on these results, the proposed antennas operate in UWB (3.1–10.6 GHz) range of frequencies.