Design of Microstrip patch antenna with Hexaferrite Cavity in X-band

In this paper, a microstrip patch mounted on high impedance substrate with hexaferrite cavity is proposed. The proposed antenna design is simulated on electromagnetic (EM) simulation software using FR-4 substrate with dielectric constant of 4.4 and thickness of 1.60mm. The proposed antenna has a compact structure with a total size of 50.8x50.8mm. A microstrip fed low profile broadband dielectric resonator antenna is proposed to fulfill the needs of mobile communication and the newer technologies require an efficient design of antenna in small size for wide frequency range applications. The antenna is composed of a dielectric resonator; a microstrip fed stepped patch and an intermediate substrate. The stepped patch and the intermediate substrate allow widening the matching bandwidth. The proposed antenna offers a fractional bandwidth of 40% around the center frequency 10GHz, and relatively stable radiation patterns in the matching band. The structure was simulated for ( =20, μr=1.2) X-band (8.2 to 12.4GHz) range with the frequency of fundamental mode, which is a hybrid mode, is around 10GHz. The design and simulation of the antenna were performed using 3D full wave electromagnetic. This research analyses effect of dielectric constant used for microstrip patch design. The simulated results show the good agreement with the proposed scheme. KeywordBroadband operation, hexaferrite cavity, patch antenna.