Title:
TRAVELING WAVE TUBE AND HIGH-FREQUENCY CIRCUIT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2016/002183
Kind Code:
A1
Abstract:
Provided are a traveling wave tube and a high-frequency circuit system such that the product life span of the traveling wave tube operating in multiple modes can be extended while variations in gain and amplification efficiency that accompany switching of the operation modes can be suppressed. The traveling wave tube (2) comprises: an electron gun (10) equipped with a cathode (11) that releases electrons, and a heater (12) that provides the cathode (11) with heat energy for releasing the electrons; a helix (20) causing an RF signal to interact with an electron beam formed from the electrons released by the electron gun (10); a collector (30) for catching the electron beam emitted by the helix (20); an anode (40) whereby the electrons released from the electron gun (10) are guided into the helix (20); and a magnetic field application device (70) for generating a magnetic field in order to change the diameter of the electron beam, said magnetic field application device (70) being supplied with electric power for generating the magnetic field from the outside.
Inventors:
MUNEHIRO TAKATSUGU (JP)
Application Number:
PCT/JP2015/003234
Publication Date:
January 07, 2016
Filing Date:
June 26, 2015
Export Citation:
Assignee:
NEC NETWORK & SENSOR SYS LTD (JP)
International Classes:
H01J23/06; H01J23/087; H01J23/34
Foreign References:
| JPS6435829A | 1989-02-06 | |||
| EP0589606A2 | 1994-03-30 | |||
| JPH02227950A | 1990-09-11 | |||
| JPS6028137A | 1985-02-13 | |||
| JPH07182968A | 1995-07-21 |
Other References:
See also references of EP 3163596A4
Attorney, Agent or Firm:
SHIMOSAKA, NAOKI (JP)
Naoki Shimosaka (JP)
Naoki Shimosaka (JP)
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