GB1425678A - Multi-cavity klystron - Google Patents
Multi-cavity klystronInfo
- Publication number
- GB1425678A GB1425678A GB2271174A GB2271174A GB1425678A GB 1425678 A GB1425678 A GB 1425678A GB 2271174 A GB2271174 A GB 2271174A GB 2271174 A GB2271174 A GB 2271174A GB 1425678 A GB1425678 A GB 1425678A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cavity
- circuit
- input
- centre frequency
- bunching
- 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
Landscapes
- Microwave Tubes (AREA)
- Particle Accelerators (AREA)
Abstract
1425678 Klystrons NIPPON ELECTRIC CO Ltd 21 May 1974 [24 May 1973] 22711/74 Heading H1D A wide-bond multicavity klystron includes an input circuit section in which a beam accelerating potential is applied across at least one interaction gap, permitting the use of a relatively low Q input cavity; an intermediate bunching cavity circuit tuned to a frequency above the centre frequency of the input circuit band; and an output cavity tuned to that centre frequency. As shown, accelerating potentials E 3 and E 4 -e.g. 1 kV and 4À65 kV, respectively-are applied across the interaction gaps 11 and 15, the drift tubes 4 and 12 being D.C. insulated from, but H.F. coupled to, the respective cavities 9 and 13 by choke structures 10 and 14. The arrangement permits the use of a low Q input cavity 9 fed by a wideband circuit 7. To enhance conversion efficiency, the second and third cavities are detuned by a few per cent above the centre frequency, and bunching is increased by successive shortening of the drift tubes i.e. L3 is less than L2. In a further embodiment, (Fig. 2, not shown) the interaction gap (42) of the second cavity (43), but not that of the first cavity (31), is biased (by E7), and the second cavity is also coupled to a matched load (47) via a wide-band circuit (46), to lower its Q and increase its bandwidth.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP48058446A JPS5010552A (en) | 1973-05-24 | 1973-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1425678A true GB1425678A (en) | 1976-02-18 |
Family
ID=13084618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2271174A Expired GB1425678A (en) | 1973-05-24 | 1974-05-21 | Multi-cavity klystron |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3904917A (en) |
| JP (1) | JPS5010552A (en) |
| DE (1) | DE2424679A1 (en) |
| FR (1) | FR2231098B1 (en) |
| GB (1) | GB1425678A (en) |
| NL (1) | NL7406947A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5169355A (en) * | 1974-12-06 | 1976-06-15 | Nippon Electric Co | Kokoritsu 4 kudosokudohenchokan |
| US4168451A (en) * | 1977-07-01 | 1979-09-18 | Nippon Electric Co., Ltd. | Multi-cavity klystron amplifiers |
| JPS6056486A (en) * | 1983-09-09 | 1985-04-02 | Hitachi Seiko Ltd | Arc welding method using consumable electrode |
| US4567452A (en) * | 1984-03-20 | 1986-01-28 | The United States Of America As Represented By The United States Department Of Energy | Broad-band beam buncher |
| US6326730B1 (en) | 1998-11-16 | 2001-12-04 | Litton Systems, Inc, | Low-power wide-bandwidth klystron |
| US8847489B2 (en) * | 2009-10-21 | 2014-09-30 | Omega P-Inc. | Low-voltage, multi-beam klystron |
| US8559894B2 (en) * | 2011-09-01 | 2013-10-15 | Baron Services, Inc. | Klystron transmitter |
| JP7011370B2 (en) * | 2017-06-13 | 2022-01-26 | キヤノン電子管デバイス株式会社 | Klystron |
| CN107240539B (en) * | 2017-06-15 | 2023-05-16 | 湖北汉光科技股份有限公司 | 65MW high-power klystron |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR951108A (en) * | 1947-06-14 | 1949-10-17 | Materiel Telephonique | Dual Electronic Beam Wideband Amplifiers |
| US2702349A (en) * | 1951-02-15 | 1955-02-15 | Gen Electric | High-frequency electric discharge device and circuits associated therewith |
| BE568536A (en) * | 1957-06-12 | |||
| US3456207A (en) * | 1966-10-10 | 1969-07-15 | Varian Associates | Integral cavity multicavity linear beam amplifier having means for applying a d.c. voltage across the interaction gaps |
| US3811065A (en) * | 1968-10-15 | 1974-05-14 | Varian Associates | Velocity modulation microwave tube employing a harmonic prebuncher for improved efficiency |
| US3725721A (en) * | 1971-05-17 | 1973-04-03 | Varian Associates | Apparatus for loading cavity resonators of tunable velocity modulation tubes |
| FR2153585A5 (en) * | 1971-09-16 | 1973-05-04 | Thomson Csf |
-
1973
- 1973-05-24 JP JP48058446A patent/JPS5010552A/ja active Pending
-
1974
- 1974-05-14 US US469758A patent/US3904917A/en not_active Expired - Lifetime
- 1974-05-21 DE DE2424679A patent/DE2424679A1/en active Pending
- 1974-05-21 GB GB2271174A patent/GB1425678A/en not_active Expired
- 1974-05-22 NL NL7406947A patent/NL7406947A/xx not_active Application Discontinuation
- 1974-05-22 FR FR7417931A patent/FR2231098B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3904917A (en) | 1975-09-09 |
| NL7406947A (en) | 1974-11-26 |
| DE2424679A1 (en) | 1974-12-05 |
| JPS5010552A (en) | 1975-02-03 |
| FR2231098A1 (en) | 1974-12-20 |
| FR2231098B1 (en) | 1978-10-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |