volume | PIER Journals

Abstract

In this paper, the design, simulation, and fabrication of a double-ridged antenna is presented. The designed double-ridged antenna is most suitable as a feed element in reflectors of the radar systems and EMC applications. The designed antenna has a voltage standing wave ratio (VSWR) less than 2 for the frequency range of 8-18 GHz. Moreover, the proposed antenna exhibits satisfactory far-field radiation characteristics in the entire operating bandwidth. A coaxial line to rectangular double-ridged waveguide transition is introduced for coaxial feeding of the designed antenna. The proposed antenna is simulated with commercially available packages such as CST microwave studio and Ansoft HFSS in the operating frequency range. Simulation results for the VSWR, radiation patterns, and gain of the designed antenna over the frequency band 8-18 GHz are presented and discussed.

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Dr. Ali Reza Mallahzadeh

Dr. Ali Imani