BROADBAND ANTENNA ARRAY AND METHOD FOR ITS EXCITATION Russian patent published in 2001 - IPC

FIELD: radio engineering; antenna arrays for communication and radar systems, radio electronic control. SUBSTANCE: method involves conversion of data signal into linearly polarized electromagnetic field, separation of the latter in amplitude into n parts according to number of antenna-array horn radiators, field modulation in space amplitude and phase including number of each antenna of array and its spatial position so as to ensure desired total amplitude-and-phase distribution. Upon field separation in amplitude into n parts it is additionally modulated in space amplitude and phase in each horn radiator so as to ensure constant input impedance throughout entire frequency range. Broadband antenna array has insulating strip base with deposited-metal layers accommodating n-output feed system and radiating aperture coupled with it and built of n horn radiators arranged at several levels. Each output of feed system gradually turns to horn radiator of antenna array in E and H plane; each horn radiator is formed so that wave impedance at any of its sections is maintained constant along optical axis of antenna array, all horn radiators are electrically closed together to form single spatial aperture. EFFECT: improved matching (reduced voltage standing wave ratio) in desired operating frequency range. 2 cl, 4 dwg