SU978241A1 - Non-reciprocal device - Google Patents

Description

(54) IMPOSSIBLE DEVICE

one

FIELD OF THE INVENTION The invention relates to ultra-high frequency radio engineering and prediaziachenr for isolating a generator operating at a high power level to a load with variable parameters.

A non-reciprocal device is known, which contains a gyrator placed in a traveling-wave resonator, connected to the input output segments of a waveguide via communication holes, and a magnetic system (1 .;

However, the known device has a large size, weight and insufficient frequency band.

The purpose of the invention is to widen the band of operating frequencies and reduce the size.

In order to reach the target in a nonreciprocal device, the traveling wave resonator is made in the form of a ring from a single-wavelength U-shaped waveguide, the protrusions of which are located inside the core, and the gyrator is made in the form of ferrite rings located inside the projections of the ochruwave-shaped U-shaped waveguide. combining the wide walls with the outer surface of the ring on which the communication holes are cut.

The magnetic system is installed inside the ring.

FIG. 1 shows a non-reciprocal device, top view; in fig. 2 - section A-A in FIG. one.

The non-reciprocal device contains a gyrator placed in a traveling wave resonator, connected to an input and output cut (0 kami 1 and 2 of the waveguide by means of communication holes 3, and a magnetic system 4. The traveling wave resonator is filled in the form of a ring S from a single-wave U-shaped waveguide b, the protrusion 7 which are located inside

15 rings 5, and the gyrator is made in the form of ferrite rings 8 located inside the protrusions 7 of a single-wavelength U-shaped waveguide b, while the input and output segments 1 and 2 of the waveguide are aligned with the walls of the outer 5 of the ring 5 zi Magnetic system 4 is installed inside the ring. 5. There is also an extra length.

9 waveguides connected to the outer surface of the ring 5 by means of the communication holes 3,

and at both ends of which loads are set 10.

Non-reciprocal device works as follows.

Electromagitic energy is supplied to the input section 1 of the waveguide, which excites the traveling wave resonator wave, the propagation direction of which is determined by the design of the communication holes 3. Using electrically controlled ferrite rings 8 of the gyrator creates an irreversible 180 ° phase shift for the wave traveling in the forward direction and 360 ° for the reflected wave, i.e. the traveling wave resonator will be tuned to resonance for guard power (for it the electrical length of ring 5 is an integer, namely one wavelength) and in antiresonance for power going in the forward direction (. in this case, the electrical length of ring 5 is equal to a fuzzy number half wavelengths). The reflected power that circulates in the traveling-wave resonator falls into the additional segment 9 of the waveguide, and from there to the load 10, where it is absorbed. Thus, a non-reciprocal device, due to the use of a traveling-wave resonator made in a vvde ring, has an extended operating frequency band.

The non-reciprocal device performs its functions even when having irreversible phase shift less than 180 °, which allows the use of a gyrator with a smaller mass of ferrite material or the use of smaller biasing fields, which allows it to be used for substantially more than 1 high.

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power levels and significantly reduce dimensions, which is especially important for operation in the meter wavelength range, since the dimensions of the known devices will exceed the working wavelength. The ring dimensions are also significantly reduced due to the single-wavelength U-sdrazny waveguide, since the critical frequencies of the waveguide with the U-shaped cross section are below the critical frequencies of the waveguide with the same. Cross sectional area, but with a rectangular section. i

Claims (2)

1. Non-reciprocal device containing a gyrator, placed in a traveling wave resonator, connected to the input and output segments of the waveguide through communication holes, and a magnetic system, characterized in that, in order to expand the operating frequency band and reduce its size, the traveling wave resonator is complete in the form of a ring of a single-wave U-shaped waveguide, the protrusions of which are located inside the ring, and the gyrator is made in vnde ferrite rings located inside the protrusions of the single-wave U-shaped waveguide, while the input and output discharge waveguide segments are aligned with the broad walls of the outer surface of the ring, which cut openings bond. 2. A device according to claim 1, in connection with the fact that the magnetic circuit is installed inside the ring. Sources of information taken into account in the examination 1. US Patent No. 3185945, cl. 333-81, published. 1964 (prototype). ten  MO g