GB935323A - Travelling wave tubes - Google Patents
Travelling wave tubesInfo
- Publication number
- GB935323A GB935323A GB11584/62A GB1158462A GB935323A GB 935323 A GB935323 A GB 935323A GB 11584/62 A GB11584/62 A GB 11584/62A GB 1158462 A GB1158462 A GB 1158462A GB 935323 A GB935323 A GB 935323A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic
- travelling wave
- rings
- shunts
- polepieces
- 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
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
- H01J23/087—Magnetic focusing arrangements
- H01J23/0873—Magnetic focusing arrangements with at least one axial-field reversal along the interaction space, e.g. P.P.M. focusing
Landscapes
- Microwave Tubes (AREA)
Abstract
935,323. Travelling wave tubes. CSFCOMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. March 27, 1962 [April 4, 1961], No. 11584/62. Class 39 (1). A travelling wave tube is combined with a periodic magnetic focusing system comprising an annular permanent magnet 5 surrounding a first portion of the envelope housing the gun and a series of annular permanent magnets 6 of alternately opposite polarities surrounding a second portion of the envelope housing the delay line, wherein magnetic shunts 9 are disposed on the first and third permanent magnets of the series counting from the gun. A magnetic shunt may also be connected to the 5th magnet. The shunts may be magnetic rings on two pairs of polepieces or two rings bridging the two sets of polepieces. In this way the same periodic amplitude of the magnetic field is obtained along the entire length of the delay line, usually a helix. When the magnetic shunts are two rings they may be of nickel or of an alloy.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR857631A FR1293571A (en) | 1961-04-04 | 1961-04-04 | Further development of alternating magnet focusing systems for traveling wave tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB935323A true GB935323A (en) | 1963-08-28 |
Family
ID=8752274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11584/62A Expired GB935323A (en) | 1961-04-04 | 1962-03-27 | Travelling wave tubes |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3271616A (en) |
| FR (1) | FR1293571A (en) |
| GB (1) | GB935323A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3324339A (en) * | 1964-02-27 | 1967-06-06 | Hughes Aircraft Co | Periodic permanent magnet electron beam focusing arrangement for traveling-wave tubes having plural interaction cavities in bore of each annular magnet |
| FR1522411A (en) * | 1967-03-14 | 1968-04-26 | Csf | Compensation for the effects of temperature in magnetic focusers |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2867745A (en) * | 1953-10-07 | 1959-01-06 | Bell Telephone Labor Inc | Periodic magnetic focusing system |
| US2886738A (en) * | 1954-01-29 | 1959-05-12 | Bell Telephone Labor Inc | Electron beam system |
-
1961
- 1961-04-04 FR FR857631A patent/FR1293571A/en not_active Expired
-
1962
- 1962-03-20 US US181035A patent/US3271616A/en not_active Expired - Lifetime
- 1962-03-27 GB GB11584/62A patent/GB935323A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1293571A (en) | 1962-05-18 |
| US3271616A (en) | 1966-09-06 |
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