RU2548014C2 - Microwave generator without electric power supply - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: invention relates to physics and particularly to generation of microwave radiation, and can be used to design microwave generators. A magnetron is fitted with an additional microwave converter for generating dc voltage and an electron source is made of beta-radioactive material. The dc voltage between the anode - cavity system - and the cathode - cylindrical electron source - is generated by converting part of the energy from an energy output system using a microwave rectifier.

EFFECT: absence of external power sources.

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Description

The technical solution relates to the field of physics, in particular to the technique of generating microwave radiation, and can be used to develop generators of microwave radiation.

The well-known "Microwave type magnetron type generator" according to the patent of the Russian Federation No. 2334302, IPC H01J 25/55, decl. 10/09/2008, publ. 09/20/2008. The microwave frequency generator of the magnetron type contains a cylindrical evacuated housing with a longitudinal magnetic field forming system disposed therein. A cathode and an anode surrounding it are coaxially placed inside the system in the form of a resonator coupled to a means for outputting microwave radiation. The microwave magnetron type generator also contains external power sources (anode voltage power source, glow power source, electromagnet power source).

The presence of external power sources should, in our opinion, be attributed to the disadvantages of the known device.

The closest technical solution to the proposed device is a microwave generator in the form of a cylindrical multi-resonator magnetron, which is described in the directory "Devices for non-destructive testing of materials" edited by V.V. Klyuev, in the 2nd book of Moscow: Mashinostroenie, 1976, 391 p. (the prototype is described in the book. 1, on pages 256-257).

The known microwave generator contains a permanent magnet, an electron source (heated cathode), a resonator system that is an anode, a power supply unit that generates anode voltage and filament voltage, as well as an energy output system.

The disadvantages of the prototype also include the need for external power sources: anode-cathode voltage and voltage.

The objective of the invention is the creation of a microwave generator that does not require external power sources.

The problem is achieved by introducing into the magnetron design a device for converting microwave oscillations to constant voltage and performing an electron source from beta-radioactive material. In this case, a constant voltage between the anode (system of resonators) and the cathode (cylindrical source of electrons) is created by converting part of the energy from the energy output system using the conversion device.

The invention is illustrated by drawings, where

figure 1 schematically shows a microwave generator without power (generator of electromagnetic waves in the microwave range), top view;

figure 2 shows a microwave generator without power in a perspective view;

figure 3 shows a block diagram of a microwave generator.

The microwave generator without power supply contains a cathode 1, made in the form of a rod, made of beta-radioactive material. The cathode 1 is an electron source and is placed inside a cylindrical anode, which is made in the form of a system of resonators 2, which are cylindrical cavities. The resonator system 2 is connected with the interaction space 3 by means of slots 4. Microwave energy from the resonator system is supplied to the load via the output system 5. The microwave generator without power supply also includes a microwave voltage to voltage converter 6 that uses some of the energy from the output system 5.

The operation of the microwave generator without power is as follows.

Electrons move in an orthogonal magnetic field B (Fig. 2) from the cathode 1 (beta-radioactive source), to the system of resonators 2. In the interaction space 3, pulsations of the boundary of the space-charge cloud arise (Fig. 1), which in steady state reaches the resonator system 2 associated with the interaction space 3 by means of slots 4. In the resonators 2, microwave oscillations occur, which through the output system 5 in the form of microwave energy enter, for example, a coaxial line loaded on the antenna, and part of the energy (3) uses microwave transmitter 6 to generate a DC voltage between the anode (2 resonators system) and one cathode (cylindrical electron source) 7 Microwave generator (magnetron).

The advantage of the proposed solution is the lack of external electrical power sources of incandescent (low voltage) and anode high voltage.

Information sources

1. Patent No. 2334302 C2 of the Russian Federation, MKI H01J 25/55. Microwave type magnetron type generator / Dubinov A.E., Ptitsyn B.G., Selemir V.D., Shilin K.S .; claimed 10/09/2006; publ. 09/20/2008.

2. Devices for non-destructive testing of materials and products. Reference book in 2 books. edited by V.V. Klyuyev, Prince 1. - M .: Mechanical Engineering, 1976, 391 p., P. 2018.

Claims (1)

A microwave generator without power supply, containing a permanent magnet, an electron source (cathode), a resonator system that is an anode, and an energy output system, characterized in that the magnetron is equipped with an additional device for converting microwave oscillations to a constant voltage between the anode and cathode by converting part of the energy from output systems, and the electron source is made of beta-radioactive material.

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