DUAL-MODE APERTURE ANTENNA AND METHOD FOR REDUCING ITS NOISE LEVEL Russian patent published in 2007 - IPC H01Q13/02 H01Q25/04 

FIELD: passive radar engineering; radio navigation and radiometry.

SUBSTANCE: proposed method for reducing antenna noise level depends on simultaneous generation of two directivity patterns, one being of narrow-beam type on wave H₁₁ and other one, of conical-beam type on wave E₀₁, followed by dividing these waves in mode divider and generating output signal as difference in amplitude-detected signals received on waves H₁₁ and E₀₁.

Proposed dual-mode antenna has mode divider affording division of power received on waves H₁₁ and E₀₁.

EFFECT: reduced noise level including that at broadband and noise data signals while affording signal reception from fast processes.

8 cl, 2 dwg