GB1208139A - Coatings for articles liable to practice bombardment - Google Patents

Coatings for articles liable to practice bombardment

Info

Publication number
GB1208139A
GB1208139A GB54027/67A GB5402767A GB1208139A GB 1208139 A GB1208139 A GB 1208139A GB 54027/67 A GB54027/67 A GB 54027/67A GB 5402767 A GB5402767 A GB 5402767A GB 1208139 A GB1208139 A GB 1208139A
Authority
GB
United Kingdom
Prior art keywords
coating
wave
helix
bombardment
coatings
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.)
Expired
Application number
GB54027/67A
Inventor
Ram Prakash Anand
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1208139A publication Critical patent/GB1208139A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
    • H01J23/24—Slow-wave structures, e.g. delay systems
    • H01J23/30—Damping arrangements associated with slow-wave structures, e.g. for suppression of unwanted oscillations

Landscapes

  • Microwave Tubes (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

1,208,139. Travelling-wave tubes; attenuators. WESTERN ELECTRIC CO. Inc. 28 Nov., 1967 [27 Dec., 1966], No. 54027/67. Addition to 1,158,874. Headings H1D and H1W. The lossy coating of tantalum on the helix of a travelling-wave tube as disclosed in Specification 1,158,874 is replaced by a coating of tantalum nitride. The coating is applied to a short length of the helix and its supports and is effective to supress the reflected wave. The coating is produced by sputtering, is about 500Š thick and is tapered to provide matching. As described, the tube has a slow-wave helix supported by three longitudinal rods spaced at 120 degree intervals and surrounded by a periodic magnetic focusing system.
GB54027/67A 1965-10-20 1967-11-28 Coatings for articles liable to practice bombardment Expired GB1208139A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49893065A 1965-10-20 1965-10-20
US60484766A 1966-12-27 1966-12-27

Publications (1)

Publication Number Publication Date
GB1208139A true GB1208139A (en) 1970-10-07

Family

ID=40291304

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54027/67A Expired GB1208139A (en) 1965-10-20 1967-11-28 Coatings for articles liable to practice bombardment

Country Status (5)

Country Link
US (1) US3474284A (en)
BE (1) BE708349A (en)
FR (1) FR94934E (en)
GB (1) GB1208139A (en)
NL (1) NL6714142A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114147357A (en) * 2021-12-20 2022-03-08 中国科学院空天信息创新研究院 Output window for traveling wave tube and preparation method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874922A (en) * 1973-08-16 1975-04-01 Boeing Co Tantalum thin film resistors by reactive evaporation
US5038076A (en) * 1989-05-04 1991-08-06 Raytheon Company Slow wave delay line structure having support rods coated by a dielectric material to prevent rod charging

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR901198A (en) * 1943-01-15 1945-07-19 Philips Nv Gas or vapor atmosphere discharge tube
FR962369A (en) * 1948-02-10 1950-06-09
US2771565A (en) * 1952-08-19 1956-11-20 Itt Traveling wave tubes
US3368103A (en) * 1964-05-20 1968-02-06 Rca Corp Resistor comprising spaced metal coatings on a resistive layer and traveling wave tube utilizing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114147357A (en) * 2021-12-20 2022-03-08 中国科学院空天信息创新研究院 Output window for traveling wave tube and preparation method thereof
CN114147357B (en) * 2021-12-20 2023-12-01 中国科学院空天信息创新研究院 Output window for traveling wave tube and preparation method thereof

Also Published As

Publication number Publication date
FR94934E (en) 1970-01-23
DE1566037A1 (en) 1972-03-09
BE708349A (en) 1968-05-02
NL6714142A (en) 1968-06-28
DE1566037B2 (en) 1972-08-31
US3474284A (en) 1969-10-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees