DEVICE FOR OPERATION ON TWO CIRCULAR POLARIZATIONS IN TWO FREQUENCY RANGES Russian patent published in 2017 - IPC H01P1/161 

FIELD: radio engineering, communication.

SUBSTANCE: device consists of a two-band polarizer with phase-shifting inhomogeneities providing a phase shift of 90° in both frequency bands, devices for combining two frequency ranges with a function of polarization selection in the lower frequency range and a polarization selector of the upper frequency range, the rectangular arms of which are located at an angle of 90° to each other and are outputs of the device in the upper frequency range, made on the segments of a round waveguide of different cross-section, connected in cascade and coaxially. In this case, a device for combining two frequency ranges, consisting of a central segment of a round waveguide with equal rectangular arms attached to it at an angle of 90° to each other, and at the point of their connection with the central segment of the round waveguide, the same high-frequency band-elimination filters are installed and which are connected to the same rectangular low-frequency waveguides connected to the symmetric arms of the double waveguide tee and a waveguide junction connected to it at the smaller diameter section, which is out-of-limit for low-frequency signals, is connected from the side of a greater diameter section to the output of a two-band polarizer, which input is the input of the device in both frequency ranges, and from the smaller diameter section - to the input of the polarization selector of the upper frequency range. In the device for combining two frequency ranges, the phase-shifting inhomogeneities of the two-band polarizer are located at an angle 0° or 90° to the axes of the rectangular arms of the device for juxtaposing two frequency ranges connected through rectangular low-frequency waveguides with symmetrical arms of one double waveguide tee, both arms E and H of which are device outputs in the lower frequency range, and at an angle of 45° to the axes of the rectangular arms of the polarization selector of the upper frequency range.

EFFECT: simplification of design.

3 dwg