DIRECTION-FINDING UHF DEVICE AND VARIANT OF ITS CONSTRUCTION Russian patent published in 2006 - IPC G01S3/10 G01S7/40 

FIELD: radio engineering, possible use for engineering of amplitude-based and phase-based direction-finders of UHF spectrum.

SUBSTANCE: in accordance to first variant, UHF direction-finding device has N receipt radio-channels, each of which includes serially connected receipt antenna, non-directional communication element, mixer and intermediate frequency amplifier, and also heterodyne, connected to heterodyne inputs of mixers of all receipt radio-channels, control generator, connected to input of first two-channel switch, second and third two-channel switches, block for controlling and processing, inputs of which are connected respectively to outputs of intermediate frequencies amplifier of all receipt radio-channels, first and second synchronized loads, mounted in first output shoulders of second and third two-channel switches, while output shoulders of first two-channel switches are connected respectively to input shoulders of second and third two-channel switches, second output shoulder of second direction switch is connected to third shoulder of non-directional communication element of first receipt radio-channel, fourth shoulder of non-directional communication element of each receipt radio-channel except the Nth one is connected to third shoulder of non-directional communication element of next receipt radio-channel, and fourth shoulder of non-directional communication element of Nth receipt radio-channel is connected to second output shoulder of third two-channel switch. Direction-finding UHF device in accordance to second variant is characterized by insertion of additional control generator and removal of second two-channel switch, while one of output shoulders of first two-channel switch is connected to third shoulder of non-directional communication element of first receipt radio-channel, and another one - loaded onto first synchronized load, input of another two-channel switch is connected to output of additional control generator.

EFFECT: increased precision of control and adjustment of amplitude and phase identity of radio-channels in broad spectrum of frequencies.

2 cl, 3 dwg