Development of a Blind Hole Substrate Slotted Microstrip Antenna for X-Band Applications

Abstract

This paper is aimed at developing a blind hole substrate slotted microstrip patch antenna for x-band applications. The proposed antenna has been designed using Roggers RT5880 (lossy) substrate of dielectric constant of 2.2 sandwiched between copper patch and ground plane. The propounded antenna has been devised and simulated in CST Microwave Studio 2014. This antenna resonates at frequency of 10.45 GHz with the minimal return loss of-55.30 dB, high gain of 8.02 dB and directivity of 8.50 dBi. The proposed antenna works for all frequencies from 8-12 GHz resulting in a huge bandwidth of 1.1 GHz (9.99 GHz-11.09 GHz). Bandwidth enhancement of 50 percent is observed in the proposed antenna as compared to the existing antenna. The proposed antenna provides this huge bandwidth with a compact size. The designed antenna can be suitably employed for all X-Band (8-12 GHz) applications including Radar and satellite communications, weather monitoring, military communications, satellite to earth downlink, earth to satellite uplink, radio determination and ultra-wide band applications.