GB668554A - Improvements in or relating to signalling systems employing travelling wave discharge apparatus - Google Patents

Improvements in or relating to signalling systems employing travelling wave discharge apparatus

Info

Publication number
GB668554A
GB668554A GB8771/49A GB877149A GB668554A GB 668554 A GB668554 A GB 668554A GB 8771/49 A GB8771/49 A GB 8771/49A GB 877149 A GB877149 A GB 877149A GB 668554 A GB668554 A GB 668554A
Authority
GB
United Kingdom
Prior art keywords
wave
helix
electrode
travelling
input
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
GB8771/49A
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.)
AT&T Corp
Original Assignee
Western Electric Co 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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB668554A publication Critical patent/GB668554A/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
    • 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
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/30—Angle modulation by means of transit-time tube

Abstract

668,554. Travelling-wave tubes. WESTERN ELECTRIC CO., Inc. March 31, 1949 [April 6, 1948], No. 8771/49. Class 39 (i): [Also in Group XL (c)] In a travelling-wave amplifier in which an electron beam interacts with a retarded electromagnetic wave, e.g. a high-frequency carrier wave, travelling between input and output means, so as to give up energy thereto, the velocity of the electrons is varied by a separate signal source 44, Fig. 1, so as to frequency- or phase-modulate the output in accordance with the signal variations. The signal modulation may be applied to electrodes 16, 17 and 21 as in Fig. 1, or to electrodes 16 and 17 only, Fig. 2 (not shown), or to electrode 17 only, Fig. 3 (not shown), or to electrode 21 only, or to electrode 16 only. The signal may be variable potentials or currents of a single frequency or of a complex nature corresponding to speech or visible images. The glass or quartz envelope contains indirectly-heated cathode 15, focusing and accelerating electrode 16, helix 17 serving as the wave transmission path, and anode 21. The anode 21 may have a higher or lower D.C. potential with reference to the helix 17, and a focusing coil 18 is provided. The input and output are coupled to the device via coaxial lines 29, 43, probes 30, 42, wave-guides 27, 37 and coupling strips 31, 34 carried by metal collars 32, 35; flanges 33, 36 on the guide walls form quarter-wave lines with collars 32, 35. The coupling may alternatively be as described in Specification 592,302 or 619,554, [Group XL (b)]. The helix 17 is supported by ceramic rods 38 located between the helix and the envelope. Ceramic spacers 39, 40 hold the members 16; 32; 35, 21 in correct spaced relation. The input wave has an electric field component parallel to the strip 31. Specification 669,473 is also referred to. The Specification as open to inspection under Sect. 91 describes a particular circuit arrangement for modulating the potential of the collector electrode, Fig. 4 (Cancelled, not shown). It is stated that the helix is 30-40 wavelengths in length. This subject-matter does not appear in the Specification as accepted.
GB8771/49A 1948-04-06 1949-03-31 Improvements in or relating to signalling systems employing travelling wave discharge apparatus Expired GB668554A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US668554XA 1948-04-06 1948-04-06
US19231A US2603772A (en) 1948-04-06 1948-04-06 Modulation system

Publications (1)

Publication Number Publication Date
GB668554A true GB668554A (en) 1952-03-19

Family

ID=26692015

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8771/49A Expired GB668554A (en) 1948-04-06 1949-03-31 Improvements in or relating to signalling systems employing travelling wave discharge apparatus

Country Status (2)

Country Link
US (1) US2603772A (en)
GB (1) GB668554A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3288634A (en) * 1963-01-07 1966-11-29 Gen Electric Method of forming a composite member

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899596A (en) * 1959-08-11 Wide band mixing system
FR967304A (en) * 1948-05-28 1950-10-31 Csf Frequency shifting device usable in television, multiplex transmission and analogous ultra-high frequency systems
US2768297A (en) * 1948-07-29 1956-10-23 Cie General De Telegraphie San Ultra-short wave oscillator
US2719954A (en) * 1949-05-24 1955-10-04 Csf Ultra-short wave oscillator
US2876380A (en) * 1949-08-17 1959-03-03 Bell Telephone Labor Inc Multielectrode traveling wave tube
NL149255B (en) * 1949-10-10 Malkki Eino EXHAUST PIPE WITH MUFFLER FOR COMBUSTION ENGINES, ESPECIALLY VEHICLES.
US2761915A (en) * 1952-02-08 1956-09-04 Bell Telephone Labor Inc Helix couplers
US2740917A (en) * 1952-04-12 1956-04-03 Hughes Aircraft Co Electron stream amplifier tube
US2849545A (en) * 1953-07-29 1958-08-26 John T Mendel Wide band traveling wave amplifier
US2919374A (en) * 1955-07-05 1959-12-29 Sylvania Electric Prod Improved traveling wave tube amplifier
US9819320B1 (en) * 2016-04-21 2017-11-14 The Government Of The United States Of America As Represented By The Secretary Of The Air Force Coaxial amplifier device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL49857C (en) * 1935-11-30
NL56349C (en) * 1937-05-26
US2276247A (en) * 1939-09-27 1942-03-10 Gen Electric High frequency modulationg system
US2254036A (en) * 1939-11-18 1941-08-26 Bell Telephone Labor Inc Phase control
NL62817C (en) * 1940-05-04
US2409608A (en) * 1941-09-24 1946-10-22 Bell Telephone Labor Inc Ultra high frequency detector
BE480140A (en) * 1946-08-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3288634A (en) * 1963-01-07 1966-11-29 Gen Electric Method of forming a composite member

Also Published As

Publication number Publication date
US2603772A (en) 1952-07-15

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