Resonant frequency of wedge shaped microstrip antenna

The small bandwidth of microstrip antennas still remains their major drawback and continues to be a major concern. One method used to improve the bandwidth is to make the patch on a wedgeshaped substrate. Only experimental observation on this has been reported. The present work is on a rectangular patch antenna, whose nonradiating edge is on a plane that intersects the ground plane with an angle, theta . An expression has been derived for the resonant frequency in the dominant mode. The theoretical findings are supported by experimental observation.