ADAPTIVE ANTENNA Russian patent published in 2024 - IPC H01Q21/00 

FIELD: radio engineering.

SUBSTANCE: invention relates to radio engineering, namely to antennae and can be used in radio navigation systems when receiving signals in conditions of interference. Adaptive antenna contains five antennae made in the form of parallel linear dipoles, located in space so that the first of them is located in the centre of a circle with radius λ/4, where λ - working wave length, and the remaining four - peripheral - arranged evenly - with opening angle of 45° - on the circle, the outputs of which are connected to the adder inputs, in the case of the central antenna directly through the attenuator, in case of peripheral - through corresponding signal transmission channels, each of which is formed by first solid-state microwave switch, output of which is connected to first input of second solid-state microwave switch through chain of series-connected controlled phase changer and attenuator, second input of second switch is connected to common bus through resistor with resistance of 50 Ohm, output of adder is connected to input of single-antenna receiver of navigation signals with function of determining signal-to-noise ratio by spectrum of received signals, control of phase shifters, attenuators, as well as switches, is carried out via controller control lines based on information on signal/noise value coming to controller via digital communication line from receiver.

EFFECT: simplified hardware implementation of adaptive antenna.

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