Multiband Rectangular Microstrip Patch Antenna Operating at C, X & Ku Bands

This paper describes the design of microstrip patch antenna for multiband applications. In the design slits are introduced in a patch which helps a single structure to operate at multiple bands. The antenna is designed using defected ground technique in order to increase the bandwidth. The substrate used is FR4 Epoxy as it is popular and cost effective when compared to other materials and the rectangular patch is made up of copper as it has good dielectric constant. The antenna is designed and the results are simulated using HFSS software. The antenna operates at multiple frequencies such as 6.5156GHz, 8.2511GHz, 9.9622GHz, 10.5244GHz, and 14.9978GHz. The parameters of antenna such as gain, reflection coefficient and radiation patterns are determined. The proposed antenna is used in radio communications services and also used for monitoring weather conditions.