MICROWAVE RECEIVER STAGE WITH SEPARATION OF ORTHOGONAL-POLARIZATION FREQUENCIES OF TWO FREQUENCY BANDS Russian patent published in 1999 - IPC

FIELD: space radio and television broadcasting in microwave frequency band. SUBSTANCE: stage has first conical section of round waveguide whose side outputs are spaced 90 deg. apart over cross-sectional area circumference, one polarized selector connected to smaller-diameter end of conical section, and as many sections of rectangular waveguide as there are side outputs connected to side inputs of second conical section of round waveguide whose larger-diameter end is connected to polarizers; it also has other polarized selector and two main low-noise amplifiers so that each side output of first conical section of round waveguide is connected to one of rectangular waveguide sections which connect side inputs of second conical section of round waveguide arranged in one plane to side outputs of round waveguide conical section. EFFECT: improved noise immunity. 1 dwg