Design of Ultra-Wideband and Constant Gain Antipodal Vivaldi Antenna with Corrugations

This paper presents the design of ultra-wideband and constant gain antipodal Vivaldi antenna with corrugations. The both side edges of proposed antenna are corrugated by slots along the y-axis in order to enhance the gain, especially at lower frequencies. The corrugations are elliptical slots with varying length by exponential function. In addition, bottom edges of conducting arms are also corruga...