SLOT LOADED PATCH ANTENNA FOR COMMUNICATION IN S- BAND

Abstract: A suitable dual frequency antenna should have resembling characteristics in both operating forms (transmitting and receiving) in terms of return loss, radiation properties and impedance matching. A single tunable antenna eliminates the need for multiple antennas for operation in multiple frequency bands. In this paper, a study of rectangular patch antenna with variations in structure by introduction of slots of different shapes on the patch surface is carried out to investigate the shift in resonant frequency/ frequencies for applications such as dual frequency operations in S band using high frequency simulation software CST Microwave Studio and followed by fabrication and measurement using VNA network analyzer. The overall dimension of the patch is kept the same to avoid extra space and modifications are carried out within the dimension of the original patch. The results obtained with these simulated and measured values are shown good dual frequency responses in the S band