WEB OF AN ULTRA-WIDEBAND WAVEGUIDE RECEIVING ANTENNA ARRAY OF LINEAR POLARISATION Russian patent published in 2022 - IPC H01Q9/00 

FIELD: antennas.

SUBSTANCE: area of application: invention relates to antenna equipment and is intended for receiving and determining the direction of arrival of linear polarisation radio signals included in a digital antenna array. Substance: web of an ultra-wideband waveguide receiving antenna array of linear polarisation with a conductive base and ultra-wideband waveguide emitters of linear polarisation in the amount of 4. The width of the base of the AA is from 1.74λ₀ to 1.76λ₀, wherein λ₀ is the wavelength in the free space, corresponding to the average frequency of the working range. The length of the distance from the centre of the first emitter to the edge of the base of the AA is from 0.8λ₀ to 0.83λ₀; the length of the distance from the centre of the fourth emitter to the edge of the base of the AA is from 0.8λ₀ to 0.83λ₀; the length of the distance from the top edge of the fourth emitter to the edge of the base is from 0.44λ₀ to 0.46λ₀; the length of the distance from the top edge of the first emitter to the edge of the base of the AA is also from 0.44λ₀ to 0.46λ₀; the length of the distance from the lateral edge of the fourth emitter to the edge of the base of the AA is from 0.36λ₀ to 0.38λ₀; the length of the distance from the lateral edge of the first emitter to the edge of the base of the AA is also from 0.36λ₀ to 0.38λ₀. The length of the base of the AA is from 12.5λ₀ to 12.7λ₀, the thickness of the base of the AA is from 0.005λ₀ to 0.02λ₀. The distance between the phase centres of the first and second emitters is from 1.95λ₀ to 2.05λ₀; the distance between the phase centres of the first and third emitters is from 9.4λ₀ to 9.6λ₀; the distance between the phase centres of the first and fourth emitters is from 11λ₀ to 11.2λ₀ and provides angular selectivity, and the ambiguity of determining the angular position is eliminated due to the use of 2 pairs of emitters, the distances between which equal 2 and 1.5 wavelengths, respectively, wherein the distances between the nearest emitters are less than 1.5λ₀, reducing the mutual influence of the emitters.

EFFECT: increase in the operating frequency band up to an octave and reduction in the number of emitters to 4.

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