SU1243045A1 - Power pulsed microwave generator - Google Patents

Description

The invention relates to fashionable microwave generators and can be used to produce microwave pulses of the centimeter range with a power of the order of gigawatts.

The aim of the invention is to increase the power and efficiency of a microwave generator,

The drawing shows a powerful pulsed microwave generator

A powerful pulsed SBCh generator contains a source of electrons in the form of a coaxial diode with magnetic insulation, consisting of an explosive cylindrical ring cathode 1 and apode 2 and a graphite diaphragm 3, which limits the external radius of the electron beam, expanding due to expansion of the cathode plasma. At a distance of 20 cm beyond the graphite diaphragm, it has an electrodynamic system, 4. The radiation is output from the generator with the power of the horn antenna 5 and is measured by the detector on hot carriers 6. To measure the current of the diode and the electo-OHIFOR beam, use Rogovsky / 7 and reverse current shunt 8, respectively. The voltage on the diode is recorded by a capacitive divider. The electrodynamic system contains a whale two segments of a periodic diaphragmed waveguide. The waveguide radius is equal to Tg 4.2 cm, and the period 3.g 1.5 cm. The diaphragms in the waveguide have the form of one and a half with a radius of rounding, paBjibiM height and thickness of the diaphragms and g 3 mm. The sections of the diaphragm waveguide are separated. transportation device

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new, formed by a set of rings in the image, as in the known device with a small radius equal to ve A 3.15 + 0.1 cm.

radiated power, measured at a distance of 1.5 m from the exit window of the horn antenna, has axial symmetry, and the high-frequency electric field has both radial and azimuth components that are comparable near the center of distribution (g 80 cm). dominated by the radial component. This indicates circular polarization of the wave field.

Gd 3 mm and a large radius equal to the radius of the diaphragm waveguide. The period of location of the diaphragms in the line is d d 1.5 cm. The device for transporting electrons is held together by three longitudinal rods located outside of it uniformly around the diaphragms. A diaphragm waveguide and an electron transport device are made sectioned. This allows selection of optimal generation conditions.

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Order 3713/53

Tyr; W 643

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Production.-polygraph, prad-e Uzhgorod, st. Project, 4

by changing their length. A magnetic field in the generator is created by a solenoid with correction coils 9 and is regulated in the transportation and electrodynamic system in the range from 14 to 32 kgf. The vacuum system allows to obtain a vacuum with a residual gas pressure of 10 Torr.

When applied to a coaxial diode with magnetic insulation from a Marx voltage generator with amplitude U - - 1.9-2.5 MB with a duration of 1 µs, a tubular electron beam with an average radius of 6 cm and a current of up to 25 kA is formed. When the beam interacts with an electrodynamic system microwave radiation is generated, which is output from the generator. and by means of a horn antenna. The electron beam, expanded in a falling magnetic field, hits the collector, which uses the conical surface of the horn antenna. The optimization of the electrodynamic system showed that the best results are obtained with the lengths of the sections (l, la) of the diaphragm tube that coincide with the lengths of the similar sections in the known device and the length of the electron transporting device (1) 5 equal to the length of the drift of the known device. The following length relationship is satisfied:

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The radiation wavelength measured with the help of out-of-band filters; 643

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Claims (3)

1. POWERFUL PULSE MICROWAVE A GENERATOR containing an electron source *, an electrodynamic system comprising two sections of a multimode periodic diaphragmed waveguide separated by a drift space, an electron collector, a horn antenna and a magnetic system for generating and transporting an electron beam, characterized in that, in order to increase the power and Efficiency of a microwave generator, an electron transport device transparent to electromagnetic radiation is introduced into the drift space. 2. The microwave generator in π. 1, characterized in that ‘the electron transport device is made in the form of a periodic sequence of metal rings. 3. The microwave generator according to paragraphs. 1 and 2, characterized in that the location period and the diameter of the holes of the rings are equal to the location period and the diameter of the holes of the diaphragms in the diaphragmed waveguide, respectively. SU .... 1243045