Ultra-Wideband 10-Element Antipodal Vivaldi Antenna Array with Metallic Insert

The paper presents the designs and characteristics of a 1x10 linear equidistant antenna array bases on an antipodal Vivaldi antenna (AVA). The analysis of the influence of the addition inserts to improve the characteristics of the antenna array was studied. By adding of inserts, the frequencies characteristic of the realized gain becomes a smooth. However, it is saved reduction in the around 5.6 GHz. Given that, the operating frequency band of the array (excluding edge antennas) is in the range from 5.7 to 12.0 GHz with the VSWR less than 2.5 (basically is less than 2.0). The radiated power is more than 0.7 W.