US2281935A - Modulation system - Google Patents

Modulation system Download PDF

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Publication number
US2281935A
US2281935A US326150A US32615040A US2281935A US 2281935 A US2281935 A US 2281935A US 326150 A US326150 A US 326150A US 32615040 A US32615040 A US 32615040A US 2281935 A US2281935 A US 2281935A
Authority
US
United States
Prior art keywords
stream
electron
frequency
resonators
resonator
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 - Lifetime
Application number
US326150A
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English (en)
Inventor
William W Hansen
Russell H Varian
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.)
Leland Stanford Junior University
Original Assignee
Leland Stanford Junior University
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
Priority to US22724D priority Critical patent/USRE22724E/en
Priority to US22990D priority patent/USRE22990E/en
Priority claimed from US201898A external-priority patent/US2280824A/en
Priority to GB8552/39A priority patent/GB530785A/en
Priority to GB982/40A priority patent/GB531067A/en
Priority to GB11654/40A priority patent/GB530869A/en
Priority to DEB11821D priority patent/DE966270C/de
Priority to FR852855D priority patent/FR852855A/fr
Application filed by Leland Stanford Junior University filed Critical Leland Stanford Junior University
Priority to US326150A priority patent/US2281935A/en
Publication of US2281935A publication Critical patent/US2281935A/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
    • H01J25/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
    • H01J25/12—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator with pencil-like electron stream in the axis of the resonators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/18—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
    • H03B5/1817—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator
    • H03B5/1835—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator the active element in the amplifier being a vacuum tube
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/30—Angle modulation by means of transit-time tube
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
    • H03C5/02—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal by means of transit-time tube

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  • Particle Accelerators (AREA)
  • Microwave Tubes (AREA)
  • Microwave Amplifiers (AREA)
  • Amplifiers (AREA)
US326150A 1938-04-14 1940-03-27 Modulation system Expired - Lifetime US2281935A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US22990D USRE22990E (en) 1938-04-14 Modulation system
US22724D USRE22724E (en) 1938-04-14 Radio transmission and reception
GB982/40A GB531067A (en) 1938-04-14 1939-03-17 Improvements in or relating to methods and apparatus for generating high frequency electro-magnetic waves
GB11654/40A GB530869A (en) 1938-04-14 1939-03-17 Improvements in or relating to methods and apparatus for transmitting or receiving radio signals
GB8552/39A GB530785A (en) 1938-04-14 1939-03-17 Improvements in or relating to electrical oscillating systems
DEB11821D DE966270C (de) 1938-04-14 1939-03-30 Elektronenentladungseinrichtung zur Erzeugung von ultrahochfrequenten Schwingungen
FR852855D FR852855A (fr) 1938-04-14 1939-04-08 Perfectionnements aux systèmes oscillants électriques
US326150A US2281935A (en) 1938-04-14 1940-03-27 Modulation system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201898A US2280824A (en) 1938-04-14 1938-04-14 Radio transmission and reception
US326150A US2281935A (en) 1938-04-14 1940-03-27 Modulation system

Publications (1)

Publication Number Publication Date
US2281935A true US2281935A (en) 1942-05-05

Family

ID=26897191

Family Applications (3)

Application Number Title Priority Date Filing Date
US22724D Expired USRE22724E (en) 1938-04-14 Radio transmission and reception
US22990D Expired USRE22990E (en) 1938-04-14 Modulation system
US326150A Expired - Lifetime US2281935A (en) 1938-04-14 1940-03-27 Modulation system

Family Applications Before (2)

Application Number Title Priority Date Filing Date
US22724D Expired USRE22724E (en) 1938-04-14 Radio transmission and reception
US22990D Expired USRE22990E (en) 1938-04-14 Modulation system

Country Status (4)

Country Link
US (3) US2281935A (de)
DE (1) DE966270C (de)
FR (1) FR852855A (de)
GB (3) GB531067A (de)

Cited By (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415349A (en) * 1940-09-05 1947-02-04 Harries John Henry Owen Electron discharge tube for ultra high frequencies
US2416283A (en) * 1942-07-03 1947-02-25 Bell Telephone Labor Inc Ultra high frequency electronic device
US2418844A (en) * 1943-04-01 1947-04-15 Raytheon Mfg Co Ultra high frequency tube
US2423968A (en) * 1944-08-26 1947-07-15 Farnsworth Television & Radio High-frequency apparatus
US2424959A (en) * 1940-09-21 1947-08-05 Standard Telephones Cables Ltd Tube arrangement for frequency doubling
US2425738A (en) * 1941-10-23 1947-08-19 Sperry Gyroscope Co Inc Tunable high-frequency electron tube structure
US2428609A (en) * 1942-11-09 1947-10-07 Gen Electric High-frequency electric discharge device
US2431688A (en) * 1943-12-14 1947-12-02 Sperry Gyroscope Co Inc Velocity modulation electron discharge apparatus
US2433044A (en) * 1942-04-24 1947-12-23 Rca Corp Electron discharge device
US2435601A (en) * 1942-12-31 1948-02-10 Gen Electric Phase modulation system
US2435609A (en) * 1943-04-20 1948-02-10 Bell Telephone Labor Inc Dipole antenna
US2435984A (en) * 1944-06-02 1948-02-17 Raytheon Mfg Co Tunable magnetron
US2436640A (en) * 1942-05-07 1948-02-24 Nils Georg Schonander Device for the frequency modulation of the resonant frequency of cavity resonators
US2436834A (en) * 1942-11-17 1948-03-02 Edwin K Stodola Phase and frequency modulation
US2442662A (en) * 1942-04-15 1948-06-01 Bell Telephone Labor Inc High-frequency translating apparatus
US2444928A (en) * 1943-07-30 1948-07-13 Sperry Corp Frequency control apparatus and method
US2445811A (en) * 1941-12-22 1948-07-27 Sperry Corp High-frequency tube structure
US2450893A (en) * 1941-05-17 1948-10-12 Sperry Corp High-frequency tube structure
US2452048A (en) * 1943-07-12 1948-10-26 Sperry Corp Frequency conversion apparatus
US2452561A (en) * 1940-02-06 1948-11-02 Standard Telephones Cables Ltd Electron discharge apparatus using velocity modulated beams
US2452566A (en) * 1943-08-21 1948-11-02 Sperry Corp Ultra high frequency circuit and method
US2454094A (en) * 1944-01-21 1948-11-16 Scophony Corp Of America Electron discharge device for producing electric oscillations
US2456422A (en) * 1943-02-11 1948-12-14 Hazeltine Research Inc High-frequency oscillator
US2457495A (en) * 1944-12-18 1948-12-28 Sylvania Electric Prod Ultra high frequency tube
US2457194A (en) * 1943-06-23 1948-12-28 Microwave oscillator
US2458167A (en) * 1944-04-27 1949-01-04 Machlett Lab Inc Electrical discharge device having cavity resonators
US2463617A (en) * 1941-03-28 1949-03-08 Bell Telephone Labor Inc Ultra high frequency harmonic generator
US2464106A (en) * 1941-11-27 1949-03-08 Hartford Nat Bank & Trust Co Device for producing oscillations
US2463632A (en) * 1944-08-11 1949-03-08 Hartford Nat Bank & Trust Co Variable electronic capacitance device
US2466765A (en) * 1944-09-22 1949-04-12 Bell Telephone Labor Inc Magnetron inductive tuner employing variably spaced parallel plate transmission line
US2466754A (en) * 1938-06-18 1949-04-12 Univ Leland Stanford Junior Frequency multiplier
US2468441A (en) * 1945-11-03 1949-04-26 Harries John Henry Owen Cavity resonator electron tube
US2468127A (en) * 1943-12-24 1949-04-26 Raytheon Mfg Co Oscillator
US2470802A (en) * 1943-08-10 1949-05-24 Rca Corp Microwave device
US2479084A (en) * 1945-04-28 1949-08-16 Skiatron Corp Directed beam high-frequency oscillator
US2480133A (en) * 1941-12-22 1949-08-30 Sperry Corp High-frequency tube structure
US2482768A (en) * 1942-12-30 1949-09-27 Sperry Corp High-frequency modulating system
US2487800A (en) * 1943-01-22 1949-11-15 Sperry Corp Frequency multiplier and stabilization cavity resonator apparatus
US2489855A (en) * 1945-11-01 1949-11-29 Rca Corp Ultra short wave system
US2494568A (en) * 1945-09-28 1950-01-17 Sperry Corp Modulated ultra high frequency signal generator
US2500944A (en) * 1942-07-21 1950-03-21 Sperry Corp High-frequency tube structure
US2501545A (en) * 1946-03-26 1950-03-21 Rca Corp Frequency modulation system
US2508695A (en) * 1944-07-29 1950-05-23 Rca Corp Cavity resonator electron discharge apparatus
US2511860A (en) * 1950-06-20 Frequency modulation system
US2514383A (en) * 1944-08-25 1950-07-11 Sperry Corp High-frequency cavity resonator apparatus
US2519369A (en) * 1943-08-21 1950-08-22 Sperry Corp Means for controlling receiver heterodyne frequency by transmitter
US2521760A (en) * 1946-08-16 1950-09-12 Int Standard Electric Corp Electric high-frequency oscillation generator
US2543082A (en) * 1943-06-22 1951-02-27 David L Webster Cavity resonator device for production of high-speed electrons
US2544675A (en) * 1945-08-09 1951-03-13 Sperry Corp Frequency multiplier of the cavity resonator type
US2544679A (en) * 1941-10-23 1951-03-13 Sperry Corp High-frequency electron tube structure
US2544680A (en) * 1945-06-28 1951-03-13 Sperry Corp High-frequency electron tube structure
US2559730A (en) * 1948-01-31 1951-07-10 Rca Corp Method of and system for stabilizing microwave oscillations
US2562927A (en) * 1946-12-28 1951-08-07 Sperry Corp Ultra high frequency discharge tube
US2566820A (en) * 1947-08-22 1951-09-04 Philco Corp Signal mixing system
US2581404A (en) * 1942-01-29 1952-01-08 Sperry Corp High-frequency modulator apparatus
US2586497A (en) * 1942-05-19 1952-02-19 Sperry Corp Automatic frequency control system
US2586816A (en) * 1945-03-24 1952-02-26 Sperry Corp High-frequency modulating system
US2602137A (en) * 1941-10-23 1952-07-01 Sperry Corp High-frequency converter apparatus
US2610307A (en) * 1940-07-02 1952-09-09 Univ Leland Stanford Junior Tunable cavity resonator electron discharge device
US2640112A (en) * 1947-12-31 1953-05-26 Int Standard Electric Corp Ultrahigh-frequency electron tube
US2653276A (en) * 1946-01-03 1953-09-22 Franzo H Crawford Tunable magnetron tube
US2721957A (en) * 1945-12-11 1955-10-25 Henry V Neher Microwave oscillator electron discharge device
US2728019A (en) * 1951-06-27 1955-12-20 Rca Corp Velocity modulation tubes
US2745987A (en) * 1952-01-17 1956-05-15 Raytheon Mfg Co Tunable magnetrons

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL80761C (de) * 1939-08-24
DE967231C (de) * 1940-10-22 1957-10-24 Pintsch Bamag Ag Einrichtung zum Anfachen (Erzeugen, Verstaerken oder Empfangen) ultrakurzer elektrischer Wellen, insbesondere des Dezimeter- oder Zentimeterwellengebietes
DE966961C (de) * 1942-08-13 1957-09-19 Pintsch Bamag Ag Elektronenroehrenanordnung zum Anfachen ultrahochfrequenter elektrischer Schwingungen, vorzugsweise des Dezimeter- oder Zentimeterwellenlaengengebietes
DE914626C (de) * 1943-08-22 1954-07-05 Siemens Ag Anordnung zum Nachstimmen von Hohlraumresonatoren, die mit je zwei Elektroden einer UKW-Roehre baulich vereinigt bzw. gekoppelt sind
US2605394A (en) * 1943-10-02 1952-07-29 Stanley N Van Voorhis High-frequency radio beacon signaling
US2493423A (en) * 1944-05-29 1950-01-03 Rca Corp Electron discharge device of the magnetron type
US2600278A (en) * 1945-08-02 1952-06-10 Louis D Smullin Variable capacity cavity tuning
US2608618A (en) * 1945-12-11 1952-08-26 Sperry Corp Cavity resonator construction
US2658147A (en) * 1946-02-18 1953-11-03 Kenneth T Bainbridge Tunable velocity modulation device
NL143663B (nl) * 1948-10-29 Ibm Koppelmechanisme met pal en palwiel.
US2708236A (en) * 1950-03-18 1955-05-10 Bell Telephone Labor Inc Microwave amplifiers
DE967797C (de) * 1951-01-17 1957-12-12 Siemens Ag Anordnung zur Erzielung einer einstellbaren Kopplung zwischen Hochfrequenzanordnungen, insbesondere Hochfrequenzleitungen
US2758246A (en) * 1951-02-01 1956-08-07 Rca Corp Signal frequency dividers
BE511689A (de) * 1951-05-29
US2747129A (en) * 1952-04-16 1956-05-22 Ludwig J Mayer Frequency multiplier
DE971349C (de) * 1952-11-22 1959-01-15 Dieter Weber Dipl Phys Dr Einrichtung zur Frequenz- und Phasenmodulation mit einer Wanderfeldroehre
DE1040622B (de) * 1954-04-09 1958-10-09 Gen Electric Co Ltd Elektrischer Schwingungsgenerator
FR1164296A (fr) * 1955-11-14 1958-10-07 Varian Associates Klystron
DE1018114B (de) * 1956-05-30 1957-10-24 Siemens Ag Modulationseinrichtung mit einem Zweispaltklystron
US2968013A (en) * 1956-09-28 1961-01-10 Emi Ltd Hollow electrical resonators
US3028519A (en) * 1959-01-02 1962-04-03 Varian Associates High frequency tube apparatus and coupled cavity output circuit therefor
US3234426A (en) * 1960-06-10 1966-02-08 Eitel Mccullough Inc Method for density modulating beams of charged particles
US3617799A (en) * 1968-06-21 1971-11-02 Varian Associates Gang tuner for a multicavity microwave tube
GB9016017D0 (en) * 1990-07-20 1990-09-05 Eev Ltd Amplifying arrangements
GB2334139B (en) * 1998-02-05 2001-12-19 Elekta Ab Linear accelerator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE727235C (de) * 1934-02-24 1942-11-21 Julius Pintsch Kom Ges Elektronenroehrenanordnung zum Anfachen von ultrahochfrequenten elektromagnetischen Schwingungen
DE748161C (de) * 1935-06-28 1944-10-27 Elektronenroehrenanordnung zum Anfachen ultrahochfrequenter elektromagnetischer Schwingungen
BE437339A (de) * 1937-07-14
DE921034C (de) * 1938-03-01 1954-12-06 Aeg Elektrische Entladungsroehre

Cited By (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511860A (en) * 1950-06-20 Frequency modulation system
US2466754A (en) * 1938-06-18 1949-04-12 Univ Leland Stanford Junior Frequency multiplier
US2452561A (en) * 1940-02-06 1948-11-02 Standard Telephones Cables Ltd Electron discharge apparatus using velocity modulated beams
US2610307A (en) * 1940-07-02 1952-09-09 Univ Leland Stanford Junior Tunable cavity resonator electron discharge device
US2415349A (en) * 1940-09-05 1947-02-04 Harries John Henry Owen Electron discharge tube for ultra high frequencies
US2424959A (en) * 1940-09-21 1947-08-05 Standard Telephones Cables Ltd Tube arrangement for frequency doubling
US2463617A (en) * 1941-03-28 1949-03-08 Bell Telephone Labor Inc Ultra high frequency harmonic generator
US2450893A (en) * 1941-05-17 1948-10-12 Sperry Corp High-frequency tube structure
US2602137A (en) * 1941-10-23 1952-07-01 Sperry Corp High-frequency converter apparatus
US2544679A (en) * 1941-10-23 1951-03-13 Sperry Corp High-frequency electron tube structure
US2425738A (en) * 1941-10-23 1947-08-19 Sperry Gyroscope Co Inc Tunable high-frequency electron tube structure
US2464106A (en) * 1941-11-27 1949-03-08 Hartford Nat Bank & Trust Co Device for producing oscillations
US2480133A (en) * 1941-12-22 1949-08-30 Sperry Corp High-frequency tube structure
US2445811A (en) * 1941-12-22 1948-07-27 Sperry Corp High-frequency tube structure
US2581404A (en) * 1942-01-29 1952-01-08 Sperry Corp High-frequency modulator apparatus
US2442662A (en) * 1942-04-15 1948-06-01 Bell Telephone Labor Inc High-frequency translating apparatus
US2433044A (en) * 1942-04-24 1947-12-23 Rca Corp Electron discharge device
US2436640A (en) * 1942-05-07 1948-02-24 Nils Georg Schonander Device for the frequency modulation of the resonant frequency of cavity resonators
US2586497A (en) * 1942-05-19 1952-02-19 Sperry Corp Automatic frequency control system
US2416283A (en) * 1942-07-03 1947-02-25 Bell Telephone Labor Inc Ultra high frequency electronic device
US2500944A (en) * 1942-07-21 1950-03-21 Sperry Corp High-frequency tube structure
US2428609A (en) * 1942-11-09 1947-10-07 Gen Electric High-frequency electric discharge device
US2436834A (en) * 1942-11-17 1948-03-02 Edwin K Stodola Phase and frequency modulation
US2482768A (en) * 1942-12-30 1949-09-27 Sperry Corp High-frequency modulating system
US2435601A (en) * 1942-12-31 1948-02-10 Gen Electric Phase modulation system
US2487800A (en) * 1943-01-22 1949-11-15 Sperry Corp Frequency multiplier and stabilization cavity resonator apparatus
US2456422A (en) * 1943-02-11 1948-12-14 Hazeltine Research Inc High-frequency oscillator
US2418844A (en) * 1943-04-01 1947-04-15 Raytheon Mfg Co Ultra high frequency tube
US2435609A (en) * 1943-04-20 1948-02-10 Bell Telephone Labor Inc Dipole antenna
US2543082A (en) * 1943-06-22 1951-02-27 David L Webster Cavity resonator device for production of high-speed electrons
US2457194A (en) * 1943-06-23 1948-12-28 Microwave oscillator
US2452048A (en) * 1943-07-12 1948-10-26 Sperry Corp Frequency conversion apparatus
US2444928A (en) * 1943-07-30 1948-07-13 Sperry Corp Frequency control apparatus and method
US2470802A (en) * 1943-08-10 1949-05-24 Rca Corp Microwave device
US2452566A (en) * 1943-08-21 1948-11-02 Sperry Corp Ultra high frequency circuit and method
US2519369A (en) * 1943-08-21 1950-08-22 Sperry Corp Means for controlling receiver heterodyne frequency by transmitter
US2431688A (en) * 1943-12-14 1947-12-02 Sperry Gyroscope Co Inc Velocity modulation electron discharge apparatus
US2468127A (en) * 1943-12-24 1949-04-26 Raytheon Mfg Co Oscillator
US2454094A (en) * 1944-01-21 1948-11-16 Scophony Corp Of America Electron discharge device for producing electric oscillations
US2458167A (en) * 1944-04-27 1949-01-04 Machlett Lab Inc Electrical discharge device having cavity resonators
US2435984A (en) * 1944-06-02 1948-02-17 Raytheon Mfg Co Tunable magnetron
US2508695A (en) * 1944-07-29 1950-05-23 Rca Corp Cavity resonator electron discharge apparatus
US2463632A (en) * 1944-08-11 1949-03-08 Hartford Nat Bank & Trust Co Variable electronic capacitance device
US2514383A (en) * 1944-08-25 1950-07-11 Sperry Corp High-frequency cavity resonator apparatus
US2423968A (en) * 1944-08-26 1947-07-15 Farnsworth Television & Radio High-frequency apparatus
US2466765A (en) * 1944-09-22 1949-04-12 Bell Telephone Labor Inc Magnetron inductive tuner employing variably spaced parallel plate transmission line
US2457495A (en) * 1944-12-18 1948-12-28 Sylvania Electric Prod Ultra high frequency tube
US2586816A (en) * 1945-03-24 1952-02-26 Sperry Corp High-frequency modulating system
US2479084A (en) * 1945-04-28 1949-08-16 Skiatron Corp Directed beam high-frequency oscillator
US2544680A (en) * 1945-06-28 1951-03-13 Sperry Corp High-frequency electron tube structure
US2544675A (en) * 1945-08-09 1951-03-13 Sperry Corp Frequency multiplier of the cavity resonator type
US2494568A (en) * 1945-09-28 1950-01-17 Sperry Corp Modulated ultra high frequency signal generator
US2489855A (en) * 1945-11-01 1949-11-29 Rca Corp Ultra short wave system
US2468441A (en) * 1945-11-03 1949-04-26 Harries John Henry Owen Cavity resonator electron tube
US2721957A (en) * 1945-12-11 1955-10-25 Henry V Neher Microwave oscillator electron discharge device
US2653276A (en) * 1946-01-03 1953-09-22 Franzo H Crawford Tunable magnetron tube
US2501545A (en) * 1946-03-26 1950-03-21 Rca Corp Frequency modulation system
US2521760A (en) * 1946-08-16 1950-09-12 Int Standard Electric Corp Electric high-frequency oscillation generator
US2562927A (en) * 1946-12-28 1951-08-07 Sperry Corp Ultra high frequency discharge tube
US2566820A (en) * 1947-08-22 1951-09-04 Philco Corp Signal mixing system
US2640112A (en) * 1947-12-31 1953-05-26 Int Standard Electric Corp Ultrahigh-frequency electron tube
US2559730A (en) * 1948-01-31 1951-07-10 Rca Corp Method of and system for stabilizing microwave oscillations
US2728019A (en) * 1951-06-27 1955-12-20 Rca Corp Velocity modulation tubes
US2745987A (en) * 1952-01-17 1956-05-15 Raytheon Mfg Co Tunable magnetrons

Also Published As

Publication number Publication date
USRE22990E (en) 1948-03-23
DE966270C (de) 1957-07-18
GB531067A (en) 1940-12-27
FR852855A (fr) 1940-03-05
GB530869A (en) 1940-12-23
GB530785A (en) 1940-12-23
USRE22724E (en) 1946-02-19

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