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GB1068646A - Slow wave circuits and discharge devices employing same - Google Patents

Slow wave circuits and discharge devices employing same

Info

Publication number
GB1068646A
GB1068646A GB10009/65A GB1000965A GB1068646A GB 1068646 A GB1068646 A GB 1068646A GB 10009/65 A GB10009/65 A GB 10009/65A GB 1000965 A GB1000965 A GB 1000965A GB 1068646 A GB1068646 A GB 1068646A
Authority
GB
United Kingdom
Prior art keywords
slow
wave
transmission line
circuit
strip transmission
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
GB10009/65A
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.)
SFD LAB Inc
Original Assignee
SFD LAB 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 SFD LAB Inc filed Critical SFD LAB Inc
Publication of GB1068646A publication Critical patent/GB1068646A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers
    • 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
    • H01J23/28—Interdigital slow-wave structures; Adjustment therefor
    • 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
    • H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J25/42—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and with a magnet system producing an H-field crossing the E-field
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J25/42—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and with a magnet system producing an H-field crossing the E-field
    • H01J25/44—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and with a magnet system producing an H-field crossing the E-field the forward travelling wave being utilised

Landscapes

  • Particle Accelerators (AREA)
  • Microwave Amplifiers (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Microwave Tubes (AREA)

Abstract

1,068,646. Crossed-field travelling wave tubes. SFD LABORATORIES Inc. March 9, 1965 [March 9, 1964], No. 10009/65. Heading H1D. An interdigital slow-wave circuit, e.g. for a crossed-field travelling wave tube, comprises a series of iterative sections 4 each of which includes a shunt impedance having a capacitative branch C, Fig. 7, shunted by an inductive stub transmission line L 2 to improve the interaction impedance of the circuit, the transmission line including first and -second conductors 3 of predetermined length positioned between the capacitative branch and a third short-circuiting conductor 5 connecting the ends of the first and second conductors which are remote from the capacitative branch, wherein the resonant frequency of the shunt impedances define the low cut-off frequency of an operating pass-band of the circuit, and the shunt impedances develop a succession of voltages along the @ for cumulative interaction with an electron stream directed along a path adjacent to the slow-wave circuit. The slow-wave circuit comprises interdigitated teeth 4 projecting from spines A, B, conductive stubs 3 being continuous with and projecting from the mid-point of each tooth, the free end of each stub being connected to a conductive wall 5, which also acts as a heat sink. The teeth of the combs may be bifurcated as described in Specification 1,063,922. Input or output coupling is by waveguide coupled to the slow-wave structure by a length of strip transmission line, one tooth of the slow-wave structure being mitred to turn the direction of propagation of the wave on the slow-wave structure to the direction on the strip transmission line. A dumbell-shaped iris couples the waveguide to the strip transmission line.
GB10009/65A 1964-03-09 1965-03-09 Slow wave circuits and discharge devices employing same Expired GB1068646A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US350516A US3361926A (en) 1964-03-09 1964-03-09 Interdigital stripline teeth forming shunt capacitive elements and an array of inductive stubs connected to adjacent teeth

Publications (1)

Publication Number Publication Date
GB1068646A true GB1068646A (en) 1967-05-10

Family

ID=23377060

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10009/65A Expired GB1068646A (en) 1964-03-09 1965-03-09 Slow wave circuits and discharge devices employing same

Country Status (5)

Country Link
US (1) US3361926A (en)
JP (1) JPS5340868B1 (en)
DE (2) DE1491448B2 (en)
FR (1) FR1438337A (en)
GB (1) GB1068646A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436594A (en) * 1965-12-15 1969-04-01 Sfd Lab Inc Slow wave circuit having an array of half wave resonators coupled via an array of quarter wave resonators
US3653744A (en) * 1970-05-22 1972-04-04 Lockheed Aircraft Corp Optical modulator utilizing a slow wave circuit
US3953759A (en) * 1975-03-20 1976-04-27 Varian Associates Interdigital slow wave circuit for electron tubes
DE19525199A1 (en) * 1995-07-11 1997-01-16 Licentia Gmbh Delay line for travelling wave tube - has middle part with two inter digitally interlocking unitary comb line strips and two side strips
JP2011053354A (en) * 2009-08-31 2011-03-17 Toshiba Corp Optoelectronic wiring film and optoelectronic wiring module
CN105869971B (en) * 2016-05-23 2017-11-21 电子科技大学 A kind of flat-head type sine waveguide slow-wave structure
CN115101396B (en) * 2021-09-29 2024-09-27 电子科技大学 Orthogonal field amplifier with interdigital structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679615A (en) * 1946-12-31 1954-05-25 Sylvania Electric Prod Electron discharge device
US2920227A (en) * 1952-06-28 1960-01-05 Csf Ladder type delay line
FR67392E (en) * 1952-12-19 1958-03-06 Csf Improvements to delay lines of the so-called interdigital type

Also Published As

Publication number Publication date
DE1491448A1 (en) 1969-06-12
US3361926A (en) 1968-01-02
DE1791268C2 (en) 1974-04-11
DE1791268B1 (en) 1973-09-20
JPS5340868B1 (en) 1978-10-30
FR1438337A (en) 1966-05-13
DE1491448B2 (en) 1972-07-13

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