DOUBLE-RANGE ANTENNA SYSTEM WITH ELECTRONIC CONTROL BY BEAM Russian patent published in 2009 - IPC H01Q21/00 

FIELD: physics, communication.

SUBSTANCE: invention concerns the radar-tracking technics and communication equipment and can be used in radar stations for determination of target coordinates and its monopulsing direction finding on the basis of two-dimensional electronic scanning. The antenna system contains the phased antenna array (PAA) of a high-frequency range, which waveguiding radiators are united in the continuous rulers and form the regular periodic structure, and PAA of the low-frequency range which dipole radiators are located between strips of PAA of a high-frequency range, shaping rows, and radiators of both PAA form the uniform aperture of double-range antenna system with electronic control using a beam. For achievement of technical effect of PAA of a high-frequency range, it is executed with the main electrical distributor proportioning microwave energy on quadrants of the aperture, and with 2N - the sublattices making quadrants of the aperture, where N - natural number. Each of sublattices consists from double-row waveguiding electrical distributors with erected on them M ferrite phase shifters with guidance circuit changers, where M - number of exits of everyone double-row waveguiding electrical distributor, proportioning VHF-energy on waveguiding radiators. Radiators of PAA of a high-frequency range are united in K general radiation panels, where K - an integer, and each of K-panels is joined with not less than four sublattices.

EFFECT: decrease in level of lateral lobes and decrease prevention in an amplification constant of PAA of the VHF-range at scanning in separate angular zones at maintenance of close to limiting performances of PAA of LF-range.

3 dwg