GB1112026A - Electromagnetic wave confining structures and electron tube incorporating them - Google Patents

Electromagnetic wave confining structures and electron tube incorporating them

Info

Publication number
GB1112026A
GB1112026A GB19204/65A GB1920465A GB1112026A GB 1112026 A GB1112026 A GB 1112026A GB 19204/65 A GB19204/65 A GB 19204/65A GB 1920465 A GB1920465 A GB 1920465A GB 1112026 A GB1112026 A GB 1112026A
Authority
GB
United Kingdom
Prior art keywords
conductive coating
electromagnetic wave
resonators
ceramic
cups
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
GB19204/65A
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 GB1112026A publication Critical patent/GB1112026A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/06—Cavity resonators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/78—One or more circuit elements structurally associated with the tube
    • H01J19/80—Structurally associated resonator having distributed inductance and capacitance
    • 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
    • H01J23/18—Resonators
    • H01J23/20—Cavity resonators; Adjustment or tuning thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/02—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
    • 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

Landscapes

  • Microwave Tubes (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

1,112,026. Thermionic cathode tubes. VARIAN ASSOCIATES. 6 May, 1965 [6 May, 1964], No. 19204/65. Heading H1D. An electron discharge device has a structure comprising a hollow body of electromagnetic wave permeable dielectric material and an electrically conductive coating on the exterior surface of the body to confine an electromagnetic wave therein, the coating being deposited by plasma-spraying. The dielectric material is ceramic and the conductive coating copper. A thermionic valve has two cup-shaped ceramic envelope parts 16, 20 joined together by a metallic disc seal 30 which supports a grid 32, one of the cups having a lip 40 thus forming between its conductive coating and the disc seal, a combination of a D.C. block and R.F. by-pass capacitor for the R.F. energy propagating along the electrically conductive coating. Both cups have centrally disposed inwardly projecting recesses 28, 34, one recess supporting the cathode 24, the other a fluid-cooled collector 36, a further D.C. block and R.F. capacitor being formed between the collector and the conductive coating. An R.F. coupling window of oval shape is formed in both resonators by an area of the ceramic members not covered by a conductive coating. The resonators may be rectangular, cylindrical or spherical, and may be of the coaxial cavity type.
GB19204/65A 1964-05-06 1965-05-06 Electromagnetic wave confining structures and electron tube incorporating them Expired GB1112026A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US365257A US3358180A (en) 1964-05-06 1964-05-06 Electromagnetic wave confining structures having electrically conductive coated dielectric walls and electron tube incorporating them

Publications (1)

Publication Number Publication Date
GB1112026A true GB1112026A (en) 1968-05-01

Family

ID=23438112

Family Applications (2)

Application Number Title Priority Date Filing Date
GB19204/65A Expired GB1112026A (en) 1964-05-06 1965-05-06 Electromagnetic wave confining structures and electron tube incorporating them
GB141/68A Expired GB1112027A (en) 1964-05-06 1965-05-06 Electron tube

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB141/68A Expired GB1112027A (en) 1964-05-06 1965-05-06 Electron tube

Country Status (3)

Country Link
US (1) US3358180A (en)
GB (2) GB1112026A (en)
NL (1) NL6505455A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT206683Z2 (en) * 1985-11-20 1987-10-01 Gte Telecom Spa MICROWAVE RESONANT CAVITY WITH METALLIC DIELECTRIC.
DE4107630C2 (en) * 1991-03-09 1995-01-19 Bruker Analytische Messtechnik Resonator for electron spin resonance spectroscopy

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL62806C (en) * 1940-05-17
US2518954A (en) * 1948-02-12 1950-08-15 Westinghouse Electric Corp Electron discharge device
US3066268A (en) * 1955-08-05 1962-11-27 Int Standard Electric Corp Electric waveguide construction
US3016447A (en) * 1956-12-31 1962-01-09 Union Carbide Corp Collimated electric arc-powder deposition process

Also Published As

Publication number Publication date
US3358180A (en) 1967-12-12
GB1112027A (en) 1968-05-01
NL6505455A (en) 1965-11-08

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