Design and Analysis of Polarization Reconfigurable Microstrip Patch Antennas

Abstract

The objective of work is to design and develop Polarization Reconfigurable Micro strip patch antenna which radiate electromagnetic wave of various orthogonal patterns. 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 microstrip patch antenna feeding with microstrip line. By using switch and two feedline antenna is capable to radiate RHCP and LHCP. The second antenna is to design and develop reconfigurable circularly polarized microstrip antenna with single feed line, feeding with Proximity coupled method. Antenna is capable to radiate LHCP and RHCP with the help of proper switching action and reconfigurable feedline. The third design is to design and develop dual feed Quadri-Polarization States microstrip patch antenna feeding with microstrip line. With the help of two feedline and 4 diodes antenna is capable to radiate VLP, HLP, LHCP, RHCP. On the patch two opposite corners are slotted and connect by using two PIN diodes. The forth design is to design and develop polarization reconfigurable microstrip antenna with single feedline, feeding with microstrip line. Antenna is capable to radiate electromagnetic wave of various pattern like LP, LHCP, RHCP. Various S-parameters, surface current distribution, axial ratio, and radiation patterns are shown for various antennas. Antennas are capable to radiate various orthogonal patterns which increase the diversity gain. Therefore, antenna have a features of multipath effects reduction i.e. reduction of fading and interference and antenna can be used as polarization diversity array