WAVEGUIDE POWER SYSTEM FOR PHASED ANTENNA ARRAY Russian patent published in 2004 - IPC

FIELD: radio engineering; antenna array plumbings, waveguide dividers and adders, frequency- scanning antenna systems. SUBSTANCE: waveguide power system designed for phased antenna array is made in the form of serpentine waveguide built around short-circuited slot rings made in the form of rectilinear bends in E-plane and has rectilinear sections as well as members coupling serpentine waveguide to antenna array radiators. Lengths of four internal rectilinear sections differ by quarter-wavelength of respective operating-range medium frequency compared with lengths of odd-numbered internal rectilinear sections; reactive obstacles are also provided on wide walls of rectilinear sections at bent points. Reactive obstacles may be made in the form of stepped or stepless adapters. EFFECT: reduced reflectivity of waveguide power system in broad frequency band, eliminated power cutoff effect at standard frequency. 4 cl, 1 dwg