DESIGN AND SIMULATION OF DUAL BAND MICROSTRIP FEED DUAL YAGI UDA ANTENNA FOR C / X BAND APPLICATIONS

A dual band Microstrip feed dual Yagi - Uda antenna is presented in this paper. Normally, the Yagi - Uda antenna radiates in the end fire direction. The proposed antenna is intended to radiate as near as possible to obtain the maximum radiation pattern with low profile and compact size. The reflector is U shaped slot; the driven element (Radiator) is U shaped fold slot while the director is rectangular slot. These slots are printed on a top of very thin FR4 substrate with a dimension of 1.6mm and loss tangent of 0.0018. The radiator will be fed by the Microstrip feed line printed on the bottom of the substrate. A C - band (4 - 8 GHz) prototype is designed by using Integrated Electromagnetic 3 Dimension (IE3D) Software and to be tested using Network Analyzer. The proposed antenna resonates at multiple frequencies and the maximum gain of above 8 dBi is achieved. The main objective is to optimize the structure of a proposed antenna (interms of length and width), to achieve high gain above 8.0 dBi and directivity above 10.0 dBi and also to operate over a multiple band of microwave frequency which is used for enormous microwave applications. The performance analysis is measured in terms of return loss, bandwidth and VSWR respectively. This antenna finds application for defense and wireless communication where antenna can be widely used for satellite applications.