SU1520610A1 - Independent decoupler - Google Patents

Abstract

This invention relates to a microwave technique. The purpose of the invention is to expand the working frequency band. To achieve the goal, an EFA 2 and 3 section of the dielectric waveguide (EFA) 1 and gyromagnetic element 4 are inserted. The EFA 2 and 3 are inserted, the 4 element is installed on the outer wall of the EFA 1 and EFA 2, parallel to the plane of polarization of the electric field. in the forward direction, EFA 1 and 2, at their first ends, are greater than the coefficients. slowing down the EFA 3 at its first end, and the coefficient the deceleration of an electromagnetic wave propagating in the opposite direction, EFA 1 and 3, at their second ends, is greater than the coefficient. slowing down EFA 2 at its second end. The device can be used for the case of vertical and horizontal polarization of the electric field. To ensure separation of at least 20 dB, the angle of α Y - branching is chosen in the range of 20-30 °, and the length of element 4 is in the range of (1-4) λ, where λ is the wavelength. 2 Il.

Description

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The invention relates to a microwave technique and can be used for uncoupling in equipment on dielectric waveguides.

The purpose of the invention is the expansion of the working frequency band.

Figure 1 shows a non-reciprocal educational device for the case of vertical polarization of an electric field in dielectric waveguides; Fig. 2 shows the same, for the case of horizontal polarization of the electric field.

The device contains the first, second and third segments 1-3 of the dielectric waveguides, forming branches, a gyromagnetic element 4, a magnetic system (not shown), and in the case of FIG. 2 and a metal plate 20 5, the slowing-down variable of nor the third segment H. The second ends of the segments 1 - 3 are the inputs 6 - 8 of the device. The deceleration coefficients of an electromagnetic wave propagating in the forward direction of the first and second segments 1 and 2 at their first ends are greater than the deceleration ratio of the third segment 3 at its first end, and the deceleration coefficient of an electromagnetic wave propagating in the opposite direction. the direction of the first and third segments 1 and 3 at their second ends is greater than the retardation coefficient of the second segment 2 by 35 of its second end

The device works as follows

The microwave signal applied to input 6 excites, in electromagnetically coupled, 40 segments 2 and 3, oscillations in an in-phase mode, the power of which is concentrated in the second segment 2 and as a result enters input.7 Input 8 turns out to be dissipated

When a microwave signal is applied to the input 7, oscillations in the antiphase mode are excited. Since the conditions for the transmission of these oscillations to the first or third segments 1 or 3 are not fulfilled, 50 they are radiated at the communication site. Inputs 6 and 8 are developed from such a microwave signal "

In the case of a microwave signal at the input 8, oscillations are excited at 55

common-mode mode, the power of which is fed to the input 6, Input 7 turns out to be unlit,

. The necessary ratios between the retardation ratios are provided, for example, by selecting the cross-sectional area of the third section 3 more than the cross-sectional area of the second section 2 (FIG.) Or placing a metal plate 5 along the outer wall of the third section 3 and with a continuously varying gap from zero at the first end of the third segment. 3 to twice the thickness of this segment at its second end (Fig. 2), as well as the nonreciprocal properties of the gyromagnetic

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To ensure separation of at least 20 dB, I choose the angle d of the Y-branching within 20-30 °, and the length of the gyromagnetic element is within (1-4) And where L is the wavelength o

Claims (1)

Invention Formula A nonreciprocal separation device containing by (its first segment of a dielectric waveguide and a gyromagnetism element, made in the form of a strip and transversely magnetized, characterized in that, in order to expand the range of operating frequencies, the second and third segments of dielectric waveguides were introduced, which are electromagnetically connected and connected by the first ends with the first end of the first segment of the dielectric waveguide in the form of a Y-branching, the gyromagnetic element is mounted on the outer parallel plane of polarization Whose floor is the wall of the first and second segments of the dielectric waveguides, with the electromagnetic field emission coefficients of the first, second and third segments of the dielectric waveguides at their first ends in the forward direction v ,, v, and v selected from the ratio v, v, v, 7 v, j, a at their second ends in the opposite direction v, v from ratios.