VARIABLE OPERATING MODE ANTENNA SYSTEM Russian patent published in 2014 - IPC H01Q21/29 

FIELD: radio engineering, communication.

SUBSTANCE: phased antenna arrays include balance bridges which form a division-summation network circuit, and each aperture quarter is broken down to 2ⁿ parts which form n subarrays from pairs of adjacent parts, where n=1, 2, 3…, wherein each part has its own second-type distributor which feeds, through each of its waveguide outputs, main waveguides of linear first-type distributors of its part only, wherein inputs of the second-type distributors of adjacent pairs of parts in each aperture quarter are connected to outputs of balance bridges, the balance arms of which become independent inputs of the subarrays. Inputs of said bridges for n=1 are directly connected to the output of a microwave adder and for n>1 are connected through one or more balance bridges to the output of the microwave adder.

EFFECT: broader functional capabilities of the phased antenna array owing to use, besides a full aperture, of separate antenna aperture arrays to form independently controlled beam patterns from each subarray and synthesis of different types of beam patterns by processing signals from the subarrays using digital beam-formation.

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