SU915136A1 - Phase shifter - Google Patents

Description

The invention relates to radio engineering and can be used in various measuring devices.

A phase shifter is known, containing a short-circuited segment of a rectangular waveguide with a ferrite resonator in the form of a sphere placed in the gap of the pole pieces of the magnetic system 03.

However, the known phase shifter has small limits of regulation introduced by - ** my phase shift, small amplitude uniformity and low linearity of the phase characteristics of the control.

The purpose of the invention is to increase the limits of regulation introduced phase shift with increasing uniformity of amplitude and linearity of the phase characteristics of the control without increasing the size of the device.

This goal is achieved by the fact that in a phase shifter containing a short-circuited segment of a rectangular waveguide with a ferrite resonator in

In the form of a sphere placed in the gap by / inert tips of the magnetic system, an additional ferrite resonator made in the form of a sphere is installed in a short-circuited section of a rectangular waveguide, and both ferrite resonators are located in one cross-sectional plane of a short-circuited segment of a rectangular waveguide circular polarization of the vector of the magnetic component of the microwave field. incident and reflected waves.

The drawing shows the design of the proposed phase shifter.

The phase shifter consists of a short-circuited segment 1 of a rectangular waveguide with a ferrite resonator 2 and with an additional ferrite resonator 3, which are installed in the gap of the pole pieces of the magnetic system.

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Phaser works as follows.

The input signal propagating in a short-circuited segment 1 of a rectangular waveguide in the positive direction of the axis passes through a cross-section cavity in which the ferrite resonator 2 and the additional ferrite resonator 3 are located, having supercritical coupling with a rectangular waveguide. Since the ferrite resonators are located at points with circular polarization of the microwave of the traveling wave, only the ferrite resonator 2 will interact with the signal propagating in the positive direction of the Ζ axis, and an additional ferrite resonator 3 with the signal reflected from the short-circuit plane. the complex reflection coefficient from a short-circuited segment 1 of a rectangular waveguide with ferrite resonators will be determined by the expression

uniformity of amplitude and maximum linearity of the phase characteristics of the control.

Relation (1) is obtained when the installation conditions of ferrite resonators at the point of circular polarization of the microwave magnetic field of the traveling wave are established. The final dimensions of the ferrite resonators, the inaccuracy of their installation in points

10 circular polarization of the traveling-wave microwave magnetic field leads to the appearance of an additional mutual coupling between them. When the distance between the ferrite plane

15 resonators and short circuit plane

I = {λ-К К = 1,2,3 ... the effect of the additional connection between

20 ferrite resonators in the least degree deteriorates the control characteristics of the phase shifter _with

Claims (1)

Claim eleven 50 > a-ι p Where (one) the resonance value of the complex transfer factor of each ferrite resonator in a rectangular matched waveguide; wavelength; the distance from the plane <0 of the location of the ferrite resonators to the short circuit plane; loaded generalized. the detuning of the magnetizing field relative to the average value; loaded generalized detuning between resonance-. fields of ferrite 50 resonators. From (1) it follows that the phase shifter with two ferrite resonators will have adjustment limits for the introduced phase shift of 72Π ^σ , and at optimal detuning between the resonant fields of the ferrite resonators 2 ^ oolm ^ ^y Let ^{have a} minimum non Phaser, containing a short-circuited piece of a rectangular waveguide with a ferrite resonator in the form of a sphere placed in the gap of the pole tips of the magnetic system, characterized in that, in order to increase the limits of regulation of the introduced phase shift with increasing uniformity With the amplitude and linearity of the phase characteristics of the control without increasing the overall dimensions of the device, an additional ferrite resonator, also made in the form of a sphere, is installed in the short-circuited section of the rectangular waveguide, and both ferrite resonators are located in the same cross-sectional plane of the short-circuited section of the rectangular waveguide points of circular polarization of the magnetic component vector of the superhigh-frequency field of the incident and reflected waves.