Miniaturization of Microstrip Patch Antenna obtained by Patch Meandering and Shorting Pin Loading Technique

Reduced size microstrip antennas with different slot and patch shapes are investigated .The ground plane size is 20 X 20 mm and substrate thickness taken to be is 1.6mm which is about the size of atypical wireless card. Detailed simulation and experimental investigations are conducted to understand their behavior and optimize for miniaturized operation. It is shown that the shorting pin makes the patch resonate at a much lower frequency compared with the conventional patch of same size and the narrow slot increases the effective electrical length of the patch thus reducing the required disk size for an antenna operated at a given frequency and helps providing more space on ground plane for electronics. The CST simulation software is employed for optimizing the design parameters and the simulation results in general agree with the measured data. Radiation patterns, S-parameter for circular and square shaped meandered patch antennas for frequency band of 1100MHz to 3000MHz are measured and shown.