GB1475268A - High power helix travelling wave tubes - Google Patents

High power helix travelling wave tubes

Info

Publication number
GB1475268A
GB1475268A GB2451375A GB2451375A GB1475268A GB 1475268 A GB1475268 A GB 1475268A GB 2451375 A GB2451375 A GB 2451375A GB 2451375 A GB2451375 A GB 2451375A GB 1475268 A GB1475268 A GB 1475268A
Authority
GB
United Kingdom
Prior art keywords
helix
envelope
axially extending
travelling
june
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
GB2451375A
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates 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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB1475268A publication Critical patent/GB1475268A/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
    • H01J23/26—Helical slow-wave structures; Adjustment therefor

Landscapes

  • Microwave Tubes (AREA)

Abstract

1475268 Travelling-wave tubes VARIAN ASSOCIATES Inc 6 June 1975 [13 June 1974] 24513/75 Heading H1D The normal positive dispersion of a travelling-wave tube helix; supported from a metal envelope 9 by electrically insulative but thermally conductive rods 11, is rendered less positive, or is rendered negative, by interposing between the helix and the envelope a plurality of axially extending, arcuate, dielectric members 26, radially spaced from the helix, and formed either of alumina ceramic (Fig. 11, not shown) or, as shown, of quartz having arrays of electrically conductive stripes 27 formed on their inner surface e.g. by photoetching a copperplated molybdenum layer. Prior art arrangements in which an array of axially extending fine wires is mounted around the helix (Fig. 4 not shown), or a plurality of axially extending conductive vanes project from the envelope towards the helix (Fig. 5, not shown), or the helix is supported in a glass envelope by inwardly projecting flutes formed in the envelope wall (Fig. 6, not shown), are referred to.
GB2451375A 1974-06-13 1975-06-06 High power helix travelling wave tubes Expired GB1475268A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US478997A US3903449A (en) 1974-06-13 1974-06-13 Anisotropic shell loading of high power helix traveling wave tubes

Publications (1)

Publication Number Publication Date
GB1475268A true GB1475268A (en) 1977-06-01

Family

ID=23902234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2451375A Expired GB1475268A (en) 1974-06-13 1975-06-06 High power helix travelling wave tubes

Country Status (6)

Country Link
US (1) US3903449A (en)
JP (1) JPS5111364A (en)
CA (1) CA1042551A (en)
DE (1) DE2526098A1 (en)
FR (1) FR2275019A1 (en)
GB (1) GB1475268A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2516428C2 (en) * 1975-04-15 1977-03-24 Siemens Ag HIKING FIELD TUBE WITH A COIL-LIKE DELAY LINE
US4005329A (en) * 1975-12-22 1977-01-25 Hughes Aircraft Company Slow-wave structure attenuation arrangement with reduced frequency sensitivity
US4107575A (en) * 1976-10-04 1978-08-15 The United States Of America As Represented By The Secretary Of The Navy Frequency-selective loss technique for oscillation prevention in traveling-wave tubes
DE7638159U1 (en) * 1976-12-06 1977-06-16 Siemens Ag, 1000 Berlin Und 8000 Muenchen TROPICAL TUBE WITH A COIL-LIKE DELAY LINE
IT1090547B (en) * 1977-10-28 1985-06-26 Elettronica Spa PROGRESSIVE WAVER HELICAL PIPES WITH SELECTIVE AUXILIARY SHIELDING USING CONDUCTIVE ELEMENTS APPLIED ON DIELECTRIC SUPPORTS
US4296354A (en) * 1979-11-28 1981-10-20 Varian Associates, Inc. Traveling wave tube with frequency variable sever length
US4292567A (en) * 1979-11-28 1981-09-29 Varian Associates, Inc. In-band resonant loss in TWT's
FR2532109A1 (en) * 1982-08-20 1984-02-24 Thomson Csf PROGRESSIVE WAVE TUBE HAVING MEANS FOR SUPPRESSING PARASITE OSCILLATIONS
US5025193A (en) * 1987-01-27 1991-06-18 Varian Associates, Inc. Beam collector with low electrical leakage
JPH02296772A (en) * 1989-05-09 1990-12-07 Nec Corp Support for traveling-wave tube
JP2014197471A (en) * 2013-03-29 2014-10-16 株式会社ネットコムセック Electron tube

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1162425A (en) * 1956-12-04 1958-09-12 Csf Improvements to tube amplifiers with direct wave propagation
US3200286A (en) * 1960-12-30 1965-08-10 Varian Associates Traveling wave amplifier tube having novel stop-band means to prevent backward wave oscillations
GB980304A (en) * 1962-09-04 1965-01-13 Csf Improvements in or relating to delay lines for forward travelling wave amplifier tubes
US3387168A (en) * 1964-12-11 1968-06-04 Varian Associates Fin-supported helical slow wave circuit providing mode separation and suppression for traveling wave tubes
US3397339A (en) * 1965-04-30 1968-08-13 Varian Associates Band edge oscillation suppression techniques for high frequency electron discharge devices incorporating slow wave circuits
US3435273A (en) * 1966-02-23 1969-03-25 Hughes Aircraft Co Slow-wave structure encasing envelope with matching thermal expansion properties
US3670197A (en) * 1971-02-25 1972-06-13 Raytheon Co Delay line structure for traveling wave devices
US3715616A (en) * 1971-10-12 1973-02-06 Sperry Rand Corp High-impedance slow-wave propagation circuit having band width extension means

Also Published As

Publication number Publication date
CA1042551A (en) 1978-11-14
DE2526098A1 (en) 1976-01-02
FR2275019B1 (en) 1979-07-13
US3903449A (en) 1975-09-02
FR2275019A1 (en) 1976-01-09
JPS5111364A (en) 1976-01-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee