JPS6435829A - Traveling-wave tube - Google Patents

Traveling-wave tube

Info

Publication number
JPS6435829A
JPS6435829A JP19231787A JP19231787A JPS6435829A JP S6435829 A JPS6435829 A JP S6435829A JP 19231787 A JP19231787 A JP 19231787A JP 19231787 A JP19231787 A JP 19231787A JP S6435829 A JPS6435829 A JP S6435829A
Authority
JP
Japan
Prior art keywords
electromagnet
traveling
electric field
electron beam
change
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP19231787A
Other languages
Japanese (ja)
Inventor
Yoshiyuki Takeyasu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP19231787A priority Critical patent/JPS6435829A/en
Publication of JPS6435829A publication Critical patent/JPS6435829A/en
Pending legal-status Critical Current

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  • Microwave Tubes (AREA)

Abstract

PURPOSE:To make high frequency characteristics uniform over the entire lifetime of wave-traveling tube elements regardless of a change in voltage applied to an anode electrode by providing an electromagnet for graduating a focused electric field, in addition to a permanent magnet, as a magnet for focusing an electron beam. CONSTITUTION:An electromagnet 4 is provided for graduating a focused electric field. As this electromagnet 4, a thin type electromagnet called a print coil is used for enabling its insertion in a space between permanent magnets 3. In an initial stage for using a traveling-wave tube, the electromagnet 4 is not energized and only the electric field of the permanent magnets 3 are employed for the graduation of an electron beam. When voltage applied to an anode electrode is changed with the deterioration of a cathode electrode 1 in a latter stage for using the traveling-wave tube, the electromagnet 4 is energized so as not to cause the change of an electron beam focusing condition before and after the voltage change.
JP19231787A 1987-07-30 1987-07-30 Traveling-wave tube Pending JPS6435829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19231787A JPS6435829A (en) 1987-07-30 1987-07-30 Traveling-wave tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19231787A JPS6435829A (en) 1987-07-30 1987-07-30 Traveling-wave tube

Publications (1)

Publication Number Publication Date
JPS6435829A true JPS6435829A (en) 1989-02-06

Family

ID=16289273

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19231787A Pending JPS6435829A (en) 1987-07-30 1987-07-30 Traveling-wave tube

Country Status (1)

Country Link
JP (1) JPS6435829A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5835822B1 (en) * 2014-06-30 2015-12-24 Ｎｅｃネットワーク・センサ株式会社 High frequency circuit system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5835822B1 (en) * 2014-06-30 2015-12-24 Ｎｅｃネットワーク・センサ株式会社 High frequency circuit system
WO2016002183A1 (en) * 2014-06-30 2016-01-07 Ｎｅｃネットワーク・センサ株式会社 Traveling wave tube and high-frequency circuit system
US10068738B2 (en) 2014-06-30 2018-09-04 Nec Network And Sensor Systems, Ltd. Traveling wave tube and high-frequency circuit system

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