Dual staircase shaped microstrip patch antenna

Abstract

The microstrip antenna finds its place in varied and upcoming technologies because it offers low profile, narrow bandwidth, high gain, and compact antenna element. The biggest disadvantage of microstrip antenna is its narrow bandwidth and poor impedance matching capacity. To make microstrip antenna compatible with commercial applications, the bandwidth enhancement and impedance matching of such antennas has to be done. The impedance matching of antenna depends upon type and position of the feed because impedance matching of source at the feeding point of antenna is very important for efficient operation of antenna. In order to improve the impedance matching a dual staircase shaped microstrip patch antenna is used in this paper. The dual staircase patch is fed with a coaxial feed technique. By using IE3D software, the simulated results gives good impedance matching and the bandwidth obtained is 6% at 3.79GHz frequency. The proposed antenna which comes under S-Band (2–4GHz) of microwaves can be used in RADAR applications like weather radar, surface ship radar, and some communications satellites.