Monotron microwave generator with matrix field emitter cathode

FIELD: electronics.

SUBSTANCE: invention relates to electronic equipment, in particular, to miniature electromagnetic oscillations vacuum generators of SHF range short-wave part, for example to monotrons. Monotron microwave generator with matrix field-emission cathode comprises electrons source, single-gap resonator, reflector, insulator, power supply sourses, SHF energy output device. Source of electrons is made in form of group of separate field emission matrices, arranged on common cathode base. In space between second capacitive electrode and reflecting electrode included two-gap resonator with central and third capacitive electrodes, provided with holes for passage of electron flow, arranged coaxially to span holes in single-gap resonator first and second capacitive electrodes. Central capacitive electrode is installed on ceramic substrate, suspended between second and third capacitive electrodes, and connected to two-gap resonator housing by resonator three strip conductors, two of which are located on single-gap resonator second capacitive electrode side and together with the second capacitive electrode forms half-wave resonant circuit, and third strip conductor is on guide on side of two-gap resonator third capacitive electrode and together with said electrode forms quarter-wave resonant circuit. Second capacitive electrode of resonator contains communication holes providing electromagnetic communication between single-gap and two-gap resonators. Single-gap resonator is made with gap by high frequency via locking capacitance, formed between first capacitive electrode side part and resonator housing.

EFFECT: technical result is increase in efficiency and output power.

6 cl, 7 dwg

 



 

Same patents:

FIELD: electrical engineering.

SUBSTANCE: microwave electrovacuum generator with electron stream reflection contains a substrate (with a matrix of autoemissive primary electrons sources placed thereon), a control grid with electron transit channels, the first and the second fine structure grids (positioned in a longitudinal direction in the electrons travel direction and forming the cavity resonator capacitative gap and a reflector with a film positioned on its surface and representing the secondary electrons source. The matrix of autoemissive primary electrons sources is divided into several groups of matrices, the side matrices symmetrically positioned on the substrate relative to the central matrix. The electron transit channels within the control grid have a cross section that is less on the side of the first fine structure grid that on the side of the matrix of autoemissive primary electrons sources; the shape of the cross section at the input and at the output of each channel replicates that of an individual matrix. The channels side surfaces are covered with film made of a material with a high secondary electron emission coefficient, representing an additional source of secondary electrons. The cavity resonator capacitative gap is non-uniform in the radial direction so that the capacitative gap magnitude in the centre exceeds the magnitude of gap in the capacitative gap centre.

EFFECT: enhancement of performance coefficient and power output of the generator by way of total electron current density increase.

5 cl, 6 dwg

FIELD: electricity.

SUBSTANCE: SHF generator contains a system of matrix field emitter cathodes, a cavity resonator with a device for communication with the external load at a generation frequency, an accelerating electrode with holes for the primary electron stream penetration, the first and the second net-shaped electrodes (serially positioned) and a reflector. The first net-shaped electrode is designed as forming an integral whole with the resonator body. The reflector surface on the second net-shaped electrode side has secondary emission coating. The reflector is positioned inside the resonator and electrically connected to it via the locking reservoir; the second net-shaped electrode is installed between the first net-shaped electrode and the reflector nd is connected to the resonator body via a inner conductor.

EFFECT: increase of performance coefficient and power output of the generator with electron stream reflection.

6 dwg, 4 cl

FIELD: electricity.

SUBSTANCE: SHF generator contains a system of matrix field emitter cathodes, a cavity resonator with a device for communication with the external load at a generation frequency, an accelerating electrode with holes for the primary electron stream penetration, the first and the second net-shaped electrodes (serially positioned) and a reflector. The first net-shaped electrode is designed as forming an integral whole with the resonator body. The reflector surface on the second net-shaped electrode side has secondary emission coating. The reflector is positioned inside the resonator and electrically connected to it via the locking reservoir; the second net-shaped electrode is installed between the first net-shaped electrode and the reflector nd is connected to the resonator body via a inner conductor.

EFFECT: increase of performance coefficient and power output of the generator with electron stream reflection.

6 dwg, 4 cl

FIELD: electrical engineering.

SUBSTANCE: microwave electrovacuum generator with electron stream reflection contains a substrate (with a matrix of autoemissive primary electrons sources placed thereon), a control grid with electron transit channels, the first and the second fine structure grids (positioned in a longitudinal direction in the electrons travel direction and forming the cavity resonator capacitative gap and a reflector with a film positioned on its surface and representing the secondary electrons source. The matrix of autoemissive primary electrons sources is divided into several groups of matrices, the side matrices symmetrically positioned on the substrate relative to the central matrix. The electron transit channels within the control grid have a cross section that is less on the side of the first fine structure grid that on the side of the matrix of autoemissive primary electrons sources; the shape of the cross section at the input and at the output of each channel replicates that of an individual matrix. The channels side surfaces are covered with film made of a material with a high secondary electron emission coefficient, representing an additional source of secondary electrons. The cavity resonator capacitative gap is non-uniform in the radial direction so that the capacitative gap magnitude in the centre exceeds the magnitude of gap in the capacitative gap centre.

EFFECT: enhancement of performance coefficient and power output of the generator by way of total electron current density increase.

5 cl, 6 dwg

FIELD: electronics.

SUBSTANCE: invention relates to electronic equipment, in particular, to miniature electromagnetic oscillations vacuum generators of SHF range short-wave part, for example to monotrons. Monotron microwave generator with matrix field-emission cathode comprises electrons source, single-gap resonator, reflector, insulator, power supply sourses, SHF energy output device. Source of electrons is made in form of group of separate field emission matrices, arranged on common cathode base. In space between second capacitive electrode and reflecting electrode included two-gap resonator with central and third capacitive electrodes, provided with holes for passage of electron flow, arranged coaxially to span holes in single-gap resonator first and second capacitive electrodes. Central capacitive electrode is installed on ceramic substrate, suspended between second and third capacitive electrodes, and connected to two-gap resonator housing by resonator three strip conductors, two of which are located on single-gap resonator second capacitive electrode side and together with the second capacitive electrode forms half-wave resonant circuit, and third strip conductor is on guide on side of two-gap resonator third capacitive electrode and together with said electrode forms quarter-wave resonant circuit. Second capacitive electrode of resonator contains communication holes providing electromagnetic communication between single-gap and two-gap resonators. Single-gap resonator is made with gap by high frequency via locking capacitance, formed between first capacitive electrode side part and resonator housing.

EFFECT: technical result is increase in efficiency and output power.

6 cl, 7 dwg

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