The eight-element vivaldi antenna array for X-band applications

The paper presents a Vivaldi antenna for X-band with minimal linear dimensions, and the eight-element linear array antenna with a wide-angle scanning. Distinctive features of the proposed antenna array are small linear dimensions and the absence of a metal screen. The beam width surpasses 100 degrees in H-plane and in E-plane is not more than 12 degrees, the radiation level back below minus 20 dB.