Patent Document ID: 4495502
Application ID: 06343042
Patent Flag: 1

Claim One:
1. A space tapered multiple jammer sidelobe canceller comprising first and second subsystems for use in a system having a main system for receiving desired and interfering electromagnetic wave energy from a given angular region of space, and main system having a main beam forming antenna and a main receiving means coupled to the main antenna; said first subsystem comprising a first array of antenna elements, widely spaced several wavelengths between any two elements, and a first unit comprising a plurality of adaptive loops coupled to said antenna elements of the first array; said second subsystem comprising a second array of antenna elements, closely spaced on the order of one wavelength or less between adjacent elements, and a second unit comprising a plurality of adaptive loops coupled to said antenna elements of the second array; and combining means having inputs from said main receiving means, from said first unit and from said second unit, for summing the signals for generating a system output and adaptive control loop feedback signals supplied on leads to the first and second units, said adaptive control loop feedback signals being used to form in said adaptive loops the generation of cancellation signals in response to correlation between interfering signals appearing in the subsystems and the same interfering signals appearing in said main system.