Ultra-wideband Co-planar Boat Microstrip Patch Antenna with Modified Ground Plane by Using Electromagnetic Band Gap Structure (EBG) for Wireless Communication

摘要

A new antenna structure using triangular microstrip patch antenna alongside a small trapezoidal shape ground plane with proximity fed by a microstrip line is proposed in this paper. This printed antenna structure resembles a boat hence it is called boat microstrip patch antenna. The boat MPA is used for ultra-wide bandwidth intelligent antenna systems application. This antenna was numerically designed using HFSS simulation software package. The final proposed antenna design provides an impedance bandwidth (S_(11) < -10dB) in the range from 2 GHz to up 35 GHz with a lot of bandwidth discontinuity. Etching 2D electromagnetic band-gap structure (2D-EBG), as dumb-bell shape in line feed increases the bandwidth to three times than the original bandwidth and reduces antenna size as well as enhancing the antenna gain. Simulations and measurements were carried out, and the comparison between them shows good agreement. The gain of antenna is also studied and the E and H-plane radiation pattern of the proposed antenna are presented.