An Ultra-Wideband Wide-Angle Scan Array Antenna For Synthetic Aperture Radar

Abstract

Accord to the synthetic aperture radar and electronic warfare requirements, an ultra-wideband(UWB) wide-angle scan dual-polarization array antenna is designed and manufactured. The antenna is vivaldi antenna, the work frequency is 6-18GHz, the scan angle is ±45° in two dimensional direction, and the array size is $16\times 16\times 2$. The structure of the antenna and simulation method is introduced in detail. After be optimized, the active-VSWRs of the antenna at 3:1 bandwidth with ±45°scan angle are blew 3. The VSWR and lobe diagrams of the array is measured, and results shows the array antenna could match the system work needs.