COMBINED FOUR-BEAM RECEIVING-TRANSMITTING WAVEGUIDE-SLIT ANTENNA Russian patent published in 2024 - IPC H01Q13/00 

FIELD: aircraft instrumentation.

SUBSTANCE: invention relates to aviation instrumentation, including systems for measuring speed and altitude using radio waves, and is used in Doppler meters of speed, drift angle and altitude, as well as in Doppler channels of radar systems, in which the functions of measuring speed and altitude (distance) using the same equipment are combined. Result is achieved by the fact that in the combined four-beam receiving-transmitting waveguide-slit antenna containing radiating waveguides with inclined slits along the narrow wall and two feeding multi-slit waveguides connected to the ends of the radiating waveguides, between the radiating waveguides there are additionally introduced receiving waveguides with inclined slots along the narrow wall with waveguide angles of 90°, wherein the number of emitting and receiving waveguides coincides, additionally there are two feeding waveguides for reception, unfolded through 90° relative to feeding waveguides for transmission.

EFFECT: providing the possibility of reducing the structure while maintaining its technical characteristics.

3 cl, 3 dwg