RU148921U1 - COMPLETE FAN ATTENUATOR - Google Patents

Abstract

A coplanar attenuator valve comprising a coplanar waveguide on a dielectric substrate and resonators located in both slots of the waveguide, characterized in that it further comprises a ceramic plate and a permanent magnet having the shape of rectangular plates located above the resonators and completely covering both resonators, the resonators being made in in the form of rectangular samples from a composite magnetostrictive piezoelectric material with metal electrodes.

Description

The utility model relates to the field of microwave electronics, in particular to non-reciprocal devices, and allows to improve the characteristics of the valve and attenuator. It is used to attenuate the signal power or absorb the power of reflected waves in the transmission line, thereby improving the coordination of various devices in the circuit.

The closest in technical solution is the nonreciprocal ferrite coplanar valve proposed by Ven, containing two ferrite rods located in the slots of the coplanar waveguide on the rutile substrate (see CP Wen. Coplanar waveguide: A surface strip transmission line suitable for nonreciprocal gyromagnetic device application, IEEE Trans Microwave Theory Tech., Vol. MTT-17, pp. 1087-1090, Dec. 1969) is a prototype.

The disadvantage of the prototype is that the control of the magnetic permeability of ferrite rods is implemented by a magnetic control system, therefore, such devices have high power consumption in the control circuit, low speed and cannot be manufactured in integral design.

The difference between this attenuator valve is that instead of ferrite rectangular rods, it contains rods consisting of a composite magnetostrictive piezoelectric material with metal electrodes for supplying control electric voltage.

The objective of the utility model is to increase the speed and decrease the power consumed in the control circuit.

The problem is achieved in that the coplanar attenuator valve, containing a coplanar waveguide on a dielectric substrate and resonators located in both slots of the waveguide, further comprises a ceramic plate and a permanent magnet having the shape of rectangular plates located above the resonators and completely covering both resonators, and the resonators made in the form of rectangular samples from a composite magnetostrictive piezoelectric material with metal electrodes.

A high-frequency magnetoelectric attenuator valve is proposed, which is a structure containing a coplanar waveguide on a dielectric substrate, two magnetoelectric resonators made of a layered magnetostrictive piezoelectric structure with deposited metal electrodes placed in slots of a coplanar waveguide, a permanent magnet and a ceramic plate with a bevel high dielectric constant.

The proposed utility model allows to obtain the following technical result:

- simultaneous implementation of the valve and attenuator in one device;

- electric field control, which makes it possible to use an attenuator valve in automatic control and regulation systems;

- the possibility of using planar manufacturing technology, and therefore lower cost of the device;

- higher performance due to less inertia of the control system and shorter relaxation time in the material;

- less power consumed in the control circuit, since when controlling an electric field, energy is consumed almost only at the time of switching;

- getting rid of interference, which inevitably occurs when controlling a magnetic field;

- the implementation of the isolation of control circuits at the same time electric and magnetic fields.

To clarify the proposed utility model proposed drawings.

In FIG. 1 shows the design of a coplanar attenuator valve, where:

1 - dielectric substrate;

2 - magnetoelectric resonators;

3 - metal conductors forming a coplanar waveguide;

4 - permanent magnet;

5 - dielectric plate with high dielectric constant.

In FIG. 2 - shows the design of a magnetoelectric (ME) resonator with metal electrodes, where:

6 - piezoelectric component;

7 - magnetostrictive component;

8 - metal electrodes.

The attenuator valve is based on the phenomenon of the microwave ME effect. For the existence of ferromagnetic resonance (FMR), an external resonant magnetic field is applied to the ME cavity. Under the influence of the control voltage applied to the electrodes located on the ME resonator, due to the microwave ME effect, which consists in the fact that the external electric field causes the deformation of the piezoelectric component, which leads to mechanical stresses in the magnetic component, the FMR line is shifted and electrical tuning is realized device settings. To improve the ellipticity, which increases the gate ratio, a ceramic plate with a high dielectric constant with beveled edges is mounted above the ME resonators. The permanent magnet has the shape of a rectangular plate and is located above the ceramic plate. The dimensions of the magnet and the ceramic plate must be such that they completely cover both resonators.

Thus, the proposed utility model simultaneously performs the functions of a valve and an attenuator; controlled by an electric field; can be made in integral performance; has a higher speed and consumes less power compared to ferrite attenuators; allows the isolation of control circuits simultaneously by electric and magnetic fields.

Claims (1)

A coplanar attenuator valve comprising a coplanar waveguide on a dielectric substrate and resonators located in both slots of the waveguide, characterized in that it further comprises a ceramic plate and a permanent magnet having the shape of rectangular plates located above the resonators and completely covering both resonators, the resonators being made in in the form of rectangular samples from a composite magnetostrictive piezoelectric material with metal electrodes.

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