GB1358489A - Apparatus for loading cavity resonators on tunable velocity modulation tubes - Google Patents

Apparatus for loading cavity resonators on tunable velocity modulation tubes

Info

Publication number
GB1358489A
GB1358489A GB2205972A GB2205972A GB1358489A GB 1358489 A GB1358489 A GB 1358489A GB 2205972 A GB2205972 A GB 2205972A GB 2205972 A GB2205972 A GB 2205972A GB 1358489 A GB1358489 A GB 1358489A
Authority
GB
United Kingdom
Prior art keywords
lossy
cavity
cavities
coated
plate
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
GB2205972A
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 GB1358489A publication Critical patent/GB1358489A/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
    • H01J23/18—Resonators
    • H01J23/20—Cavity resonators; Adjustment or tuning thereof
    • H01J23/207—Tuning of single resonator

Landscapes

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

Abstract

1358489 Klystrons; cavity resonators VARIAN ASSOCIATES 11 May 1972 [17 May 1971] 22059/72 Headings H1D and H1W A turnable multicavity klystron incorporates a resonant load coupled to at least one of the cavities, to introduce a frequency dependent amount of loss, and hence change of Q, such that the bandwidth of the tube is maintained substantially constant throughout the tuning range. As described, the second and third cavities of a five cavity klystron (Fig. 1, not shown) are each provided with a series resonant lossy circuit located wholly within the respective resonator. The lossy circuit may, Fig. 8, be in the form of a conductive plate 26 spaced from the cavity wall 27, and supported from an adjacent wall of the resonator by an arcuate arm 28 which is formed by a stainless steel member sandwiched between a pair of copper segments, the whole being coated with a layer R L of lossy material, e.g. an Al/Cr/Co/Fe alloy, and the plate 26 having a concave, serrated surface (Fig. 9, not shown) to inhibit multifactoring. Alternatively, Fig. 11, the lossy circuit may be in the form of an apertured copper plate, cut at 39, to provide a slotted ring with lossy material 41 coated on its inner surface.
GB2205972A 1971-05-17 1972-05-11 Apparatus for loading cavity resonators on tunable velocity modulation tubes Expired GB1358489A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14441171A 1971-05-17 1971-05-17

Publications (1)

Publication Number Publication Date
GB1358489A true GB1358489A (en) 1974-07-03

Family

ID=22508466

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2205972A Expired GB1358489A (en) 1971-05-17 1972-05-11 Apparatus for loading cavity resonators on tunable velocity modulation tubes

Country Status (5)

Country Link
US (1) US3725721A (en)
JP (1) JPS5643586B2 (en)
CA (1) CA954974A (en)
DE (1) DE2223543C3 (en)
GB (1) GB1358489A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS535110B2 (en) * 1972-10-25 1978-02-23
US3942066A (en) * 1972-10-25 1976-03-02 Nippon Electric Company Limited Velocity modulation tube including a high resonance-frequency floating prebuncher having a q-value lower than a low resonance-frequency input cavity
JPS5010552A (en) * 1973-05-24 1975-02-03
JPS5169355A (en) * 1974-12-06 1976-06-15 Nippon Electric Co Kokoritsu 4 kudosokudohenchokan
JPS51115768A (en) * 1975-04-03 1976-10-12 Nec Corp Wide-band speed modurated tube
JPS58186138A (en) * 1982-04-26 1983-10-31 Toshiba Corp Klystron device
US4800322A (en) * 1984-10-23 1989-01-24 Litton Systems, Inc. Broadband klystron cavity arrangement
US5315210A (en) * 1992-05-12 1994-05-24 Varian Associates, Inc. Klystron resonant cavity operating in TM01X mode, where X is greater than zero
US5521551A (en) * 1994-11-21 1996-05-28 Ferguson; Patrick E. Method for suppressing second and higher harmonic power generation in klystrons
US6326730B1 (en) * 1998-11-16 2001-12-04 Litton Systems, Inc, Low-power wide-bandwidth klystron

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE568536A (en) * 1957-06-12
US3028519A (en) * 1959-01-02 1962-04-03 Varian Associates High frequency tube apparatus and coupled cavity output circuit therefor
US3169206A (en) * 1959-08-06 1965-02-09 Varian Associates High frequency tube method and apparatus
US3104340A (en) * 1959-10-15 1963-09-17 Litton Electron Tube Corp Broadband klystron
DE1298200B (en) * 1960-09-06 1969-06-26 Varian Associates Multi-chamber klystron amplifier tubes with a wide range
US3195007A (en) * 1960-10-28 1965-07-13 Litton Prec Products Inc Stagger-tuned klystron with cavities resonant outside passband
US3248593A (en) * 1962-02-16 1966-04-26 Gen Electric Multiple beam radio frequency apparatus having cooperating resonators and mode suppression means
US3365607A (en) * 1963-09-20 1968-01-23 Varian Associates Electron discharge device
US3360679A (en) * 1964-02-21 1967-12-26 Varian Associates Electron discharge device having lossy resonant elements disposed within the electromagnetic field pattern of the slow-wave circuit
US3594605A (en) * 1969-10-31 1971-07-20 Varian Associates Mode suppression means for a clover-leaf slow wave circuit

Also Published As

Publication number Publication date
DE2223543C3 (en) 1982-01-28
US3725721A (en) 1973-04-03
JPS5643586B2 (en) 1981-10-13
JPS4849375A (en) 1973-07-12
DE2223543A1 (en) 1972-12-07
CA954974A (en) 1974-09-17
DE2223543B2 (en) 1981-04-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PE20 Patent expired after termination of 20 years