A Subarray for Ku-Band High-Gain Scanning Antenna Based on CTS Waveguide

A subarray for Ku-band wide-angle scanning antenna array based on waveguide continuous transverse stubs (CTS) is presented. The proposed antenna array consists of 2 subarrays, subarray consists of 16 horn radiators. The subarray based on waveguide continuous transverse stubs is fed by a waveguide binary power divider. The CTS subarray for scanning antenna array was calculated and researched. The developed subarray has compact structure, light weight, manufacturability and high efficiency. A beam-scanning range of ± 90° is achieved by mechanically rotating subarrays around its axes at the same angles. The calculated aperture efficiency exceeds 55% in the entire working frequency band. The proposed scanning antenna array with high efficiency can be used for satellite communication terminals and radar systems.