| 摘要 |
FIELD: radio engineering. SUBSTANCE: invention refers to system of probes for waveguides with double polarization meant for usage with satellite reflector 10 for reception of satellite signals polarized orthogonally in one band of frequencies and for provision of improved isolation between these two polarized satellite signals. System of probes has waveguide 28 placed into block-receiver 12 with low level of noise in which two probes 34, 38 are positioned for reception of linearly polarized energy from both orthogonal directions. Probes 34, 38 are arranged in one plane on opposite sides of single reflector 36 in the form of polarized pin that reflects one direction of polarization, directs orthogonal signal with minimal losses to input and then reflects inverted orthogonal signal. probes 34,38 are positioned at distance lambda/4 from reflector. Reflecting rotary gear 44 is formed with the aid of thin plate that is oriented at angle of 45 deg to incident linear polarization. Short-circuit network 46 is located at distance of approximately lambda/4 behind front edge of plate 43. It divides energy of incident flux into two equal components in orthogonal planes In this case one component is reflected by front edge and the other component is reflected by short- circuit network 46 of waveguide. Resulting phase shift through 180 deg between reflected components causes turn through 90 deg in plane of linear polarization after recombination and so leads 34a, 38a are located in one longitudinal plane. EFFECT: improved noise immunity. 14 cl, 10 dwg. |
