SU370685A1 - VIBRATION CIRCULATOR I „p IN CYLINDRICAL - Google Patents

Description

one

This invention relates to a microwave technique.

The external oscillator Yacr in a cylindrical resonator, consisting of a segment of the excitation waveguide connected to the resonator; the NORO | M using the communication system has a limited range of operating frequencies.

In order to expand the working frequency range of the exciter in the proposed device, the communication system is made in the form of two sections of an U-shaped waveguide connecting the segment of the exciting waveguide with the face rate of the resonator, and the cross sections of these segments are located on one radius, perpendicular to it direct to the direction of propagation of the wave in the segment of the exciting waveguide, on the river, and to ensure the suppression of the oscillations fnp.

FIG. 1 shows the proposed pathogen; in fig. 2 - characteristics of the types of oscillations in the cylinder cavity resonator; in fig. 3 - directions of the conduction current of the Yasch wave at the short-circuit 1K; in fig. 4 - direction of conduction wave currents at the short-circuited end of the pesiOiHaTOpa.

The causative agent consists of segment 1 of the exciting molar waveguide and segments 2, 3 of the U-shaped waveguide connecting the narrow wall of the segment / with the short-limiting

the end of the resonator 4. The centers of cross sections of segments 2 and 3 in the plane of the short-circuited end of resonator 4 are hell; its radius is 01m, perpendicular (distorted shuttlecocks in segment / and iB are different sides from its middle. Wide walls of segments 2 and perpendicular to the radius of the resonator 4.

The use of a cut / with a U-shaped cross section is not necessary. The transverse section of the segment / mol-set can be chosen depending on the wavelength range, for example, in the long-wavelength portion of the centimeter range, 5 segments of the stripline are used, and in the short-wavelength section of the rectangular waveguide.

The operation of the proposed driver is shown by the characteristic of the types of oscillations shown in FIG. 2. This characteristic (the picture is the dependence of the resonance frequency f, dia: meter D and length L of the resonator.

Let the main wave in the resonator be the Yasch wave. The rectangle ABCG (sl1. Fig. 2) shows the operating frequency range of the exciter. Points AB correspond to the minimum / min. and maximum / max. - Frequency range. In order to provide frequency overlap ratio

0 more than one and a half, you need a rectangle

Increase ABVG by so much that it would be crossed by the EtiQ route. Consequently, in the resonator simultaneously with the oscillations of the main wave I, there are also undesirable oscillations of the wave by comparing the direction of the currents of the ultrahigh frequency at the short-circuited edge of the resonator 4 of the waves Yasch and in (Hom. Fig. 3 "4), that an undesirable wave i in resonator 4 is suppressed in the use of two segments 2 and 3 of a U-shaped waveguide in the driver.

On the vertical axis of symmetry of the short-circuited end of the resonator 4 and the adjacent 1K "region, the direction of conduction currents of the ultrahigh frequency of the wave Yasch does not change, and the appearance of the wave currents varies by 180 ° twice IB points Oi and Og (see Fig. 4) . The points Oi and 02 are remote from the center to a distance of 0.48 R, where R is the radius of the short-circuited end of the resonator, therefore it is possible to accept with sufficient accuracy for practice that these points are in the middle of the radius of the resonator 4. TaiK. the cross sections of segments 2 and 5 are located in a perpendicular to the formation of a wave in the segment I, (The transverse currents flowing through its narrow wall, excite the syn | phase (same phase) field, in segments 2 and 5. Under conditions, these are the lengths of segments 2 and 5 and the phase velocities in them are the same. The synphase of the fields is preserved at their output and in the right direction. The offset currents in segments 2 and 5 in the plane (and the short-circuited end of the resonator 4 will be the same, as shown by the arrow in the figure. 1. This direction of currents completely coincides with the direction of the currents The conduction wave Yasch on the Tartse resonator 4 (see Fng. 3), therefore, this wave is excited. At the same time, the Etz wave cannot be excited, because the directions of the conduction currents of this wave on the short-circuited end of the resonator are opposite in the cross sections. th segments 2 and 3 are shifted in different directions from the mid-range, for example from point O) in FIG. four.

Thus, the causative agent provides for the unwanted EUQ wave in the resonator 4, as a result, the range of work; their frequencies of the main wave are measured. It is also undesirable.

wave 210, which is outside the operating range of the driver (see Fig. 2), therefore, it is possible to further expand the range of the main wave.

PRED: ME T INVENTION

Boc.3: oscillator I cd in a cylindrical resonator, consisting of a segment of the excitation waveguide connected to the resonator of the aerial system and of the aid of the sound system, characterized in that, in order to expand the operating frequency range of the exciter, the system zi is made in two sections of a U-shaped waveguide, connecting 1x the excitation waveguide with the resonator end wall, and the centers of cross sections of these segments in the plane of the resonator end face are located on one radius perpendicular to the direction of the wide distribution I have waves in oTipeBKe of the stimulating waveguide, at a distance that suppresses oscillations of Ecr.

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