DESIGN AND ANALYSIS OF POLARIZATION RECONFIGURABLE MICROSTRIP PATCH ANTENNAS

Abstract

The objective of work is to design and develop Polarization Reconfigurable Micro strip patch antennas which radiate electromagnetic wave of various orthogonal patterns i.e. VLP, HLP, LHCP and RHCP. A progression of parametric study was done to get that how the features of the antenna depends on dimensions and material of geometry. Simulation of antenna has to be done by using CST microwave studio and HFSS. Antennas of various geometry have to be simulated and fabricated which radiates various orthogonal patterns of electromagnetic wave. The first antenna is to design and develop dual feed reconfigurable circularly polarized micro strip patch antenna feeding with micro strip line. Antenna consists of metallic square radiating patch with thin rectangular slot and dielectric substrate of permittivity 4.4. Radiating patch fed by micro strip line feeding. By using switch and two feed line antenna is capable to radiate RHCP and LHCP. The second antenna is to design and develop reconfigurable circularly polarized micro strip antenna with single feed line, feeding with Proximity coupled method. Antenna consists of metallic square ring radiating patch and two substrates of permittivity 1.06 and 4.4. Due to ring shape of radiating patch antenna is capable to radiate circularly polarized wave. Antenna is capable to radiate LHCP and RHCP with the help of proper switching action and reconfigurable feed line.