GB548095A - Modulation system for oscillation generators or amplifiers employing velocity modulation tubes - Google Patents
Modulation system for oscillation generators or amplifiers employing velocity modulation tubesInfo
- Publication number
- GB548095A GB548095A GB7172/41A GB717241A GB548095A GB 548095 A GB548095 A GB 548095A GB 7172/41 A GB7172/41 A GB 7172/41A GB 717241 A GB717241 A GB 717241A GB 548095 A GB548095 A GB 548095A
- Authority
- GB
- United Kingdom
- Prior art keywords
- modulation
- loop
- modulating
- chamber
- coupling
- 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
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
- H01J25/02—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
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/10—Angle modulation by means of variable impedance
- H03C3/28—Angle modulation by means of variable impedance using variable impedance driven mechanically or acoustically
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C7/00—Modulating electromagnetic waves
- H03C7/02—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Amplifiers (AREA)
Abstract
548,095. Modulating systems ; frequency modulation. STANDARD TELEPHONES & CABLES, Ltd. June 6, 1941, No. 7172. Convention date Sept. 19, 1940. [Class 40 (v)] Modulation is effected in a generating or amplifying system employing a velocity-modulated tube and an associated resonant chamber, by coupling a variable impedance to the chamber and applying the modulating voltage to vary this impedance. This gives frequency modulation in the case of a generator, and amplitude modulation in the case of an amplifier. Fig. 1 shows a generator tube of known type comprising resonant chambers 2, 3, associated respectively with the control grids 8, 9 and the pick-up grids 11, 12, and with feed-back provided by the coupling conductor 19. Output is taken by the loop 15 and lead 16, and modulation is effected by a variable capacity 25, 26. The plate 25 is connected to a loop 20 sealed into the chamber 3, and the plate 26 is flexibly and conductively connected to the housing 23 and is vibrated by a moving-coil device 30 connected to the source MV of modulating voltage. The coupling of the loop 20 may be adjusted by varying its size or orientation. For amplitude modulation, the feed-back conductor 19 is omitted, the input oscillations are fed to the chamber 2 by a loop conductor, and the modulating-capacity 25, 26 is associated with a loop by which the output is taken to the load (Fig. 2 not shown). In a further modification, the capacity 25, 26 is replaced by a known thermionic reactance tube, the modulating-voltage being applied to one of its grids (Fig. 3 not shown). The impedance varied by the modulating voltage may itself be coupled to the resonant chamber.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US357403A US2312919A (en) | 1940-09-19 | 1940-09-19 | Modulation system for velocity modulation tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB548095A true GB548095A (en) | 1942-09-24 |
Family
ID=23405435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7172/41A Expired GB548095A (en) | 1940-09-19 | 1941-06-06 | Modulation system for oscillation generators or amplifiers employing velocity modulation tubes |
Country Status (3)
Country | Link |
---|---|
US (1) | US2312919A (en) |
FR (1) | FR948631A (en) |
GB (1) | GB548095A (en) |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL65322C (en) * | 1941-04-11 | |||
BE446137A (en) * | 1941-06-25 | |||
NL66484C (en) * | 1941-11-22 | |||
US2436640A (en) * | 1942-05-07 | 1948-02-24 | Nils Georg Schonander | Device for the frequency modulation of the resonant frequency of cavity resonators |
US2419121A (en) * | 1942-10-17 | 1947-04-15 | Westinghouse Electric Corp | Tuning means for cavity resonators |
BE454606A (en) * | 1943-03-01 | |||
BE455111A (en) * | 1943-03-06 | |||
GB565413A (en) * | 1943-05-05 | 1944-11-09 | Norman Charles Barford | Improvements in or relating to the frequency modulation of oscillations generated byvelocity-modulation discharge devices |
US2426193A (en) * | 1943-06-17 | 1947-08-26 | Rca Corp | Radio transmitter automatic volume control |
US2476885A (en) * | 1943-07-28 | 1949-07-19 | Westinghouse Electric Corp | Mixer for microwave receivers |
US2470802A (en) * | 1943-08-10 | 1949-05-24 | Rca Corp | Microwave device |
US2473724A (en) * | 1943-09-24 | 1949-06-21 | Westinghouse Electric Corp | Ultra high frequency coupler between contiguous ends of aligned wave guide sections |
US2558758A (en) * | 1944-01-22 | 1951-07-03 | Sperry Corp | Radio velocity indicator |
US2473834A (en) * | 1944-01-25 | 1949-06-21 | Raytheon Mfg Co | Coupling between transmitter and wave guide system |
US2438768A (en) * | 1944-04-28 | 1948-03-30 | Philco Corp | Apparatus for varying the frequency of resonant cavities |
US2530171A (en) * | 1944-06-06 | 1950-11-14 | Westinghouse Electric Corp | Magnetron output terminal |
US2630488A (en) * | 1944-11-27 | 1953-03-03 | Albert M Clogston | Cavity resonator tuning device |
US2464115A (en) * | 1944-12-08 | 1949-03-08 | Emi Ltd | Apparatus for amplitude modulating high-frequency oscillations |
US2472769A (en) * | 1945-03-07 | 1949-06-07 | Rca Corp | Signaling system |
US2530087A (en) * | 1945-03-09 | 1950-11-14 | Rca Corp | Absorption-type modulation system |
US2566478A (en) * | 1945-04-06 | 1951-09-04 | Raytheon Mfg Co | Tunable magnetron |
US2640964A (en) * | 1945-05-09 | 1953-06-02 | Freedman Samuel | Microwave modulation |
US2482914A (en) * | 1945-06-27 | 1949-09-27 | Rca Corp | Signaling |
US2451825A (en) * | 1945-08-01 | 1948-10-19 | John J Guarrera | Oscillator tube with tunable coaxial resonator |
US2681997A (en) * | 1945-09-14 | 1954-06-22 | Andrew V Haeff | Feedback coupling means |
US2589885A (en) * | 1945-10-19 | 1952-03-18 | Us Sec War | Tunable magnetron |
US2489855A (en) * | 1945-11-01 | 1949-11-29 | Rca Corp | Ultra short wave system |
US2611092A (en) * | 1946-01-03 | 1952-09-16 | Louis D Smullin | Automatic frequency control circuit |
US2494570A (en) * | 1946-01-22 | 1950-01-17 | George R Mezger | Electrical transducer |
US2614234A (en) * | 1946-02-02 | 1952-10-14 | Voge Jean Paul | Oscillating and amplifying vacuum tube for very short waves |
US2493801A (en) * | 1946-03-14 | 1950-01-10 | Philco Corp | Signal mixing system |
US2510026A (en) * | 1946-04-05 | 1950-05-30 | Rca Corp | Frequency modulation system for microwave generators |
US2462294A (en) * | 1946-05-22 | 1949-02-22 | Rca Corp | Automatic frequency control |
US2566479A (en) * | 1946-08-30 | 1951-09-04 | Raytheon Mfg Co | Tunable magnetron |
US2501152A (en) * | 1946-09-05 | 1950-03-21 | Raytheon Mfg Co | Tunable magnetron |
US2510982A (en) * | 1947-04-19 | 1950-06-13 | Fed Telecomm Lab Inc | High-frequency reactance circuits |
US4038602A (en) * | 1976-02-25 | 1977-07-26 | The United States Of America As Represented By The Secretary Of The Navy | Automodulated realtivistic electron beam microwave source |
US5029259A (en) * | 1988-08-04 | 1991-07-02 | Mitsubishi Denki Kabushiki Kaisha | Microwave electron gun |
-
1940
- 1940-09-19 US US357403A patent/US2312919A/en not_active Expired - Lifetime
-
1941
- 1941-06-06 GB GB7172/41A patent/GB548095A/en not_active Expired
-
1947
- 1947-06-28 FR FR948631D patent/FR948631A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2312919A (en) | 1943-03-02 |
FR948631A (en) | 1949-08-05 |
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