SU1735944A1 - Polarization separator - Google Patents

Abstract

The invention relates to radio engineering. The purpose of the invention is to expand the range of operating frequencies. The polarization separator contains segment 1 of the circular waveguide, into which the microwave signal is fed and is distributed -A to four segments 2-5 (segment 4.a of Fig. 1 is not shown) of the rectangular waveguide, located around the circumference of segment 1 through an angle of 90 & deg. The signal amplitude in segments 2–5 depends on the position of the polarization vector of the EM field E of the wave Ne in relation to segments 2–5. Another microwave signal, such as a local oscillator, comes from a circular waveguide 13 with a Hoi wave through a junction 12 into a segment of a coaxial waveguide 11 with a Wave of Hom and through a communication hole 6-9 (the communication holes 6, 8 are not shown in Fig. 1) 2-5, made in their narrow walls. The use of various types of waves — Nei wave in segment 1, the polarization of which is analyzed, and Hoi waves in segment 11 as a signal of a local oscillator allows the device to expand the operating frequency range. 2 Il. fe, X | Soo eaten about t

Description

The invention relates to radio engineering and can be used in the microwave paths for the separation of signals by polarization and as an integral part of the frequency converter.

The aim of the invention is to expand the range of operating frequencies.

FIG. 1 shows the polarization separator, section; in fig. 2 is a section A-A in FIG. one.

The polarization separator contains a segment 1 of a circular waveguide, to which four segments 2-5 of a rectangular waveguide are located located around its circumference through an angle of 90 °, communication holes 6-9, made in narrow walls of segments 2-5 of a rectangular waveguide, movable short 10, installed at one end of section 1 of a circular waveguide, segment 11 of a coaxial waveguide with a Hoi wave, to one of the ends of which is connected a junction 12 of segment 11 of a coaxial waveguide with a Nei wave to a circular waveguide 13 with a Hoi wave, and the second ec segment 11 of the coaxial waveguide with the wave Hot shorted and connected through the 6-9 opening communication with the narrow walls of rectangular segments 2-5 waveguide.

The polarization separator works as follows.

Suppose that in segment 1 of a circular waveguide, a wave Ne does with a certain angle of polarization. In sections 2-5 of the rectangular waveguide, a Ny wave is excited, the amplitude of which depends on the position of the polarization angle, and the excitation in this case is in phase. The second signal, for example, the local oscillator, is supplied from the circular waveguide 13 to the junction 12 and then through the segment 11 of the coaxial waveguide 11 and the communication apertures 6-9 to the same segments 2-5 of the rectangular waveguide whose excitation is now

antiphase, due to the structure of the HOL wave field. This allows a balanced superheterodyne reception of orthogonally polarized components

field entering the segment 1 of the circular waveguide, which ultimately improves the accuracy of measurement of the polarization characteristics of the input signal. Using different types of waves in the device: None

in section 1 of a circular waveguide and the Note in section 11 of a coaxial waveguide, it allows operation in the entire frequency band of their operating frequencies, including with a close arrangement of the frequencies of the signal and local oscillator. With

This ensures the necessary level of isolation between the segments of the circular waveguide 1 and the coaxial waveguide 11. The alignment of the segment 1 of the circular waveguide and the adjustment of its mode of operation is carried out using the moving short-circuit cable 10.

Claims (1)

Claims of invention Polarization separator containing a segment of a circular waveguide, to which four segments of a rectangular waveguide are connected, located around its circumference through an angle of 90 ° and having communication holes with an additional waveguide, with In this case, the wide walls of the rectangular waveguide segments lie in planes parallel to the axis of the circular waveguide segment, and at one of the ends of the circular waveguide segment there is a movable short circuiter, characterized in that the additional waveguide is designed as a coaxial segment waveguide with a wave of Hoi, to one of the ends of which is connected The introduced transition from a segment of a coaxial waveguide with an HOI wave to a circular waveguide with a Hoi wave, the second end of which is shorted and connected to the narrow walls of the rectangular waveguide segments through connection holes in them. Faye. 2