H01J25/02 - CPC Classification Index

ClassID:

204902 ⎘

H01J25/02 - CPC Classification

Classification description:

Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators

Sub-classes:

H01J25/025 » {with an electron stream following a helical path} 14
H01J25/04 » Tubes having one or more resonators, without reflection of the electron stream, and in which the modulation produced in the modulator zone is mainly density modulation, e.g. Heaff tube 13
H01J25/06 » Tubes having only one resonator, without reflection of the electron stream, and in which the modulation produced in the modulator zone is mainly velocity modulation, e.g. Lüdi-Klystron 1
H01J25/10 » Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator 28
H01J25/22 » Reflex Klystrons, i.e. tubes having one or more resonators, with a single reflection of the electron stream, and in which the stream is modulated mainly by velocity in the modulator zone 3
H01J25/32 » Tubes with plural reflection, e.g. Coeterier tube 4

Recent Application in this class:

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Resonator coil having an asymmetrical profile

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2021-07-08

Resonator coil having an asymmetrical profile

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2019-09-12

High-frequency vacuum electronic device

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2017-11-09

Laser plasma lens

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2017-08-10

Amplification of electromagnetic waves via interaction with an electron beam by using a waveguide having a linear interaction channel with curved parts and including rows of pillars extending through the waveguide