Comparative study of microstrip patch antenna feed network

This paper presents a comparative study of patch antenna feed structures. That includes microstrip line feed, inset feed, coaxial feed, aperture coupled feed and proximity coupled feed. Matching between the patch antenna and the feed network heavily depends on the feed technique used. In this work we review various feeding techniques to provide an understanding of the important design parameters and their effects on the bandwidth, gain and the other important antenna characteristics. Various simulation tools, commercial and internally developed are used during this work.