Analytical Study of Impedance Matching for Probe Fed Rectangular Microstrip Patch Antenna

the objective of this article is to study and analyze the analytical solution to the feeding mechanism of a rectangular micro strip patch antenna. The feeding mechanism employed a circular capacitive structure to improve the impedance matching. A circuit model is modeled to find the parameters. The circuit model includes a series inductor with the feeding probe, a parallel plate radial micro strip line, and a series radial gap capacitor of rectangular micro strip patch antenna. A closed impedance transformation is matched. The load impedance is taken 250ohm that is matched with patch impedance for given design parameters. The analyzed results are good agreement with the conventional model.