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GB666229A - Improvements in or relating to electron discharge devices - Google Patents

Improvements in or relating to electron discharge devices

Info

Publication number
GB666229A
GB666229A GB2264148A GB2264148A GB666229A GB 666229 A GB666229 A GB 666229A GB 2264148 A GB2264148 A GB 2264148A GB 2264148 A GB2264148 A GB 2264148A GB 666229 A GB666229 A GB 666229A
Authority
GB
United Kingdom
Prior art keywords
helix
relating
travelling
aug
axis
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
GB2264148A
Inventor
Douglas Cecil Rogers
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2264148A priority Critical patent/GB666229A/en
Publication of GB666229A publication Critical patent/GB666229A/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

666,229. Travelling-wave tubes. STANDARD TELEPHONES & CABLES, Ltd. Aug. 26, 1949 [Aug. 27, 1948; Dec. 3, 1948], Nos. 22641/48 and 31352/48. Drawings to Specification. Class 39 (i). In a travelling-wave amplifier tube in which an electron beam is projected along the axis of a helix, the mean radius a of the helix for operation at a mean free space wavelength#, is given by the expression a=#x/2#n, where n is the ratio of the velocity of wave propagation in free space to that along the axis of the helix, and x is a numerical factor lying between unity and 1.8. Preferably it is equal to 1.5. The ratio of the diameter of the wire forming the helix to the pitch preferably does not exceed 0.6, and may for example be 0.5Œ0.1.
GB2264148A 1948-08-27 1948-08-27 Improvements in or relating to electron discharge devices Expired GB666229A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2264148A GB666229A (en) 1948-08-27 1948-08-27 Improvements in or relating to electron discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2264148A GB666229A (en) 1948-08-27 1948-08-27 Improvements in or relating to electron discharge devices

Publications (1)

Publication Number Publication Date
GB666229A true GB666229A (en) 1952-02-06

Family

ID=10182722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2264148A Expired GB666229A (en) 1948-08-27 1948-08-27 Improvements in or relating to electron discharge devices

Country Status (1)

Country Link
GB (1) GB666229A (en)

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