A Study Of Different Feeding Mechanisms In Microstrip Patch Antenna

This paper describes the feeding techniques for various Microstrip patch antennas. The various methods are used for feeding the Microstrip patch antennas. These methods are divided into two categories i.e. contacting and non-contacting. In general contacting methods are microstrip line feed and co-axial plane feed. On other hand, non- contacting techniques are aperture coupled feed and proximity coupled feed. These techniques give better understanding of design parameters of antenna and their effect on its characteristics i.e. VSWR, bandwidth, resonant frequency and return losses. In this study, perfect matching can be done by changing the feed point Coaxial feeding technique, and microstrip line feed gives less return losses, reliable, easy to fabricate aperture couple feed is used for achieving maximum bandwidth whereas, proximity coupled gives least impedance matching and radiation efficiency.