GB670124A - Improvements in or relating to travelling-wave electronic discharge tubes - Google Patents

Improvements in or relating to travelling-wave electronic discharge tubes

Info

Publication number
GB670124A
GB670124A GB23028/49A GB2302849A GB670124A GB 670124 A GB670124 A GB 670124A GB 23028/49 A GB23028/49 A GB 23028/49A GB 2302849 A GB2302849 A GB 2302849A GB 670124 A GB670124 A GB 670124A
Authority
GB
United Kingdom
Prior art keywords
travelling
spiral
strips
sept
relating
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
GB23028/49A
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.)
PHILLIPS ELECTRICAL Ltd
Original Assignee
PHILLIPS ELECTRICAL Ltd
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 PHILLIPS ELECTRICAL Ltd filed Critical PHILLIPS ELECTRICAL Ltd
Publication of GB670124A publication Critical patent/GB670124A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J25/36—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field
    • H01J25/38—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field the forward travelling wave being utilised
    • 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
    • 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
    • H01J25/36—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field

Landscapes

  • Microwave Tubes (AREA)
  • Particle Accelerators (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

670,124. Travelling-wave tubes. PHILIPS ELECTRICAL, Ltd. Sept. 6, 1949 [Sept. 9, 1948], No. 23028/49. Class 39 (i). In a travelling-wave tube, the electron beam is flat, travelling radially outwards from a cylindrical cathode 2 surrounded by one or more grid electrodes 3, 4 and interacting with waves which travel along a transmission line, at least one limb of which is a spiral coaxial with the cathode and the beam. The spiral fulfils the condition r n =r 1 exp. (na/r 1 ), a being the initial pitch, r 1 the initial radius and r n the radius of the nth turn. As shown, the transmission line comprises a pair of strips 5 shaped as logarithmic spirals and the anode comprises two narrow strips 6 with a screen 8 behind. In a modification, one of the spiral strips is replaced by a flat conductive plate normal to the axis of the spiral.
GB23028/49A 1948-09-09 1949-09-06 Improvements in or relating to travelling-wave electronic discharge tubes Expired GB670124A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL277174X 1948-09-09

Publications (1)

Publication Number Publication Date
GB670124A true GB670124A (en) 1952-04-16

Family

ID=19782165

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23028/49A Expired GB670124A (en) 1948-09-09 1949-09-06 Improvements in or relating to travelling-wave electronic discharge tubes

Country Status (7)

Country Link
US (1) US2600491A (en)
BE (1) BE491017A (en)
CH (1) CH277174A (en)
DE (1) DE812807C (en)
FR (1) FR994737A (en)
GB (1) GB670124A (en)
NL (2) NL142248B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1005198B (en) * 1954-12-11 1957-03-28 Telefunken Gmbh Electric discharge tubes based on the running field principle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE550314C (en) * 1932-05-07 Sueddeutsche Telefon App Kabel Cathode tubes in which the grid or anode or both are arranged in the electron path in such a way that, viewed from the cathode, parts of the grid and the anode alternate with one another
US1210540A (en) * 1915-10-28 1917-01-02 Drahtlose Telegraphie Gmbh Cathode-ray tube.
US2002238A (en) * 1930-07-22 1935-05-21 Jr Edward H Yonkers Negative resistance
US2164922A (en) * 1935-12-03 1939-07-04 Telefunken Gmbh Cross field control tube
US2176589A (en) * 1936-01-16 1939-10-17 Telefunken Gmbh Electron beam tube

Also Published As

Publication number Publication date
NL142248B (en)
CH277174A (en) 1951-08-15
US2600491A (en) 1952-06-17
FR994737A (en) 1951-11-21
BE491017A (en)
DE812807C (en) 1951-09-06
NL73505C (en)

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