PHASE-BASED DIRECTION-FINDER Russian patent published in 2014 - IPC G01S3/46 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to radio engineering and can be used in radio environment monitoring systems. The disclosed phase-based direction-finder comprises N+1 antennae located in a single plane, N+2 mixers and intermediate frequency preamplifiers, a high-pass filter, N+2 intermediate frequency band-pass filters, N+2 intermediate frequency amplifiers with a logarithmic video output, a tunable heterodyne, a heterodyne frequency control unit, a control generator, a directional coupler, a high frequency amplifier, a quadrature divider, an N-input analogue adder, a bias voltage former, a phase detector unit, a quadrature phase detector, two ADC units, two threshold devices, two two-input analogue adders, a correction unit, a bearing computer, electrically programmable memory, an analogue comparator, a four-input coincidence circuit and an intermediate frequency computer, connected to each other in a certain manner.

EFFECT: high accuracy of direction-finding in a wide frequency range and providing the full depth of built-in control of the direction-finder.

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