NL237015A - - Google Patents
Info
- Publication number
- NL237015A NL237015A NL237015DA NL237015A NL 237015 A NL237015 A NL 237015A NL 237015D A NL237015D A NL 237015DA NL 237015 A NL237015 A NL 237015A
- Authority
- NL
- Netherlands
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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7938/58A GB834958A (en) | 1958-03-12 | 1958-03-12 | Improvements in or relating to magnetic focusing systems for travelling wave tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL237015A true NL237015A (en:Method) |
Family
ID=9842670
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL237015D NL237015A (en:Method) | 1958-03-12 | ||
| NL100798D NL100798C (en:Method) | 1958-03-12 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL100798D NL100798C (en:Method) | 1958-03-12 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2965782A (en:Method) |
| DE (1) | DE1189206B (en:Method) |
| FR (1) | FR1222013A (en:Method) |
| GB (1) | GB834958A (en:Method) |
| NL (2) | NL100798C (en:Method) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3106659A (en) * | 1959-03-24 | 1963-10-08 | Kearfott Company Inc | Microwave tube construction |
| US3259788A (en) * | 1961-01-19 | 1966-07-05 | Nippon Electric Co | Magnetic focussing device for an electron tube |
| US3353056A (en) * | 1964-04-24 | 1967-11-14 | Gen Electric | Electron beam focusing system including a magnetically permeable shield enclosing theelectron gun permanent magnet |
| GB1538430A (en) * | 1975-04-03 | 1979-01-17 | English Electric Valve Co Ltd | Travelling wave tubes |
| FR2479558A1 (fr) * | 1980-04-01 | 1981-10-02 | Thomson Csf | Tube a ondes progressives a cavites couplees et focalisation par aimants permanents alternes, et ensemble amplificateur comprenant un tel tube |
| DE3015231A1 (de) * | 1980-04-21 | 1981-10-22 | Siemens AG, 1000 Berlin und 8000 München | Wanderfeldroehre mit periodisch-permanentmagnetischem fokussiersystem |
| CN114256040B (zh) * | 2021-12-23 | 2023-03-14 | 电子科技大学 | 一种新型行波管慢波结构 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2844754A (en) * | 1953-04-29 | 1958-07-22 | Bell Telephone Labor Inc | Electron beam focusing system |
| USRE25189E (en) * | 1953-04-29 | 1962-06-19 | cioffi | |
| US2867745A (en) * | 1953-10-07 | 1959-01-06 | Bell Telephone Labor Inc | Periodic magnetic focusing system |
| NL198576A (en:Method) * | 1954-08-26 | |||
| NL200862A (en:Method) * | 1954-10-04 | |||
| NL201701A (en:Method) * | 1954-11-12 | |||
| NL214979A (en:Method) * | 1956-03-01 |
-
0
- NL NL237015D patent/NL237015A/xx unknown
- NL NL100798D patent/NL100798C/xx active
-
1958
- 1958-03-12 GB GB7938/58A patent/GB834958A/en not_active Expired
-
1959
- 1959-03-09 US US798212A patent/US2965782A/en not_active Expired - Lifetime
- 1959-03-11 DE DEE17281A patent/DE1189206B/de active Pending
- 1959-03-12 FR FR789210A patent/FR1222013A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1222013A (fr) | 1960-06-07 |
| NL100798C (en:Method) | |
| US2965782A (en) | 1960-12-20 |
| GB834958A (en) | 1960-05-11 |
| DE1189206B (de) | 1965-03-18 |