A reduced size antipodal Vivaldi antenna design for wideband applications

A reduced size antipodal Vivaldi antenna (AVA) design for the frequency band 6-18 GHz applications is presented in this paper. The proposed antenna shape is modified with the slot-loaded and circulated tips to achieve the high gain, good VSWR and Radiation Pattern while the total size is reduced 66% compared with the reference antennas. Simulation and implementation results of the designed antenna are verified.