GB1177947A - Improvements in or relating to a Travelling-Wave Tube Amplifier - Google Patents
Improvements in or relating to a Travelling-Wave Tube AmplifierInfo
- Publication number
- GB1177947A GB1177947A GB46733/66A GB4673366A GB1177947A GB 1177947 A GB1177947 A GB 1177947A GB 46733/66 A GB46733/66 A GB 46733/66A GB 4673366 A GB4673366 A GB 4673366A GB 1177947 A GB1177947 A GB 1177947A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnet
- tube
- collector
- periodic
- magnetic
- 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
- H01J23/027—Collectors
Landscapes
- Microwave Tubes (AREA)
Abstract
1,177,947. Travelling-wave tubes. NIPPON ELECTRIC Co. Ltd. 19 Oct., 1966 [19 Oct., 1965], No. 46733/66. Heading H1D. A travelling-wave tube with periodic magnetic focusing is provided, adjacent the entrance to the collector, with a structure which includes a magnet providing a magnetic field which is asymmetric with respect to the tube axis, whereby secondary electrons emitted from the collector are prevented by deflection from reaching the slow-wave structure. In a tube having a periodic permanent magnet focusing system composed of magnets 12 separated by polepieces 13, and a collector 10 having an extension 9 projecting towards the focusing system, the final magnet 15 either has a portion cut off by a plane parallel to the tube axis (Fig. 2, not shown) or is provided with a magnetic shunt, either on its outer (Fig. 4, not shown) or inner (Fig. 6, not shown) surface and extending between its bounding polepieces but only partly around its periphery. The shunt may be of material compensating for the change of the magnetic properties of the magnet with temperature, and temperature compensating shunts may also be incorporated in the periodic focusing structure. In further embodiments (Figs. 7 to 10, not shown), an annular, semi-cylindrical, or horseshoe magnet, magnetized transversely to the tube axis, or one or more bar magnets arranged radially with respect to the axis, are disposed around the collector projection 9, and are separated from the periodic focusing system by a non-magnetic member. The output coupling from the tube includes an antenna 6, choke 7, and waveguide 14.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6409165 | 1965-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1177947A true GB1177947A (en) | 1970-01-14 |
Family
ID=13248043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB46733/66A Expired GB1177947A (en) | 1965-10-19 | 1966-10-19 | Improvements in or relating to a Travelling-Wave Tube Amplifier |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3445714A (en) |
| GB (1) | GB1177947A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2162684A (en) * | 1984-07-17 | 1986-02-05 | Varian Associates | Electron beam scrambler |
| GB2251334A (en) * | 1990-03-08 | 1992-07-01 | Eev Ltd | High frequency amplifying apparatus. |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2333441C3 (en) * | 1973-06-30 | 1975-12-18 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Lauffeldtube |
| CN114005720B (en) * | 2021-11-09 | 2022-10-14 | 北京航空航天大学 | Terahertz traveling wave tube slow wave focusing integrated structure and manufacturing method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2955225A (en) * | 1958-05-02 | 1960-10-04 | Rca Corp | Electron collector |
| DE1491387B1 (en) * | 1964-07-23 | 1970-07-30 | Philips Patentverwaltung | Permanent magnetic focusing device for the bundled introduction of an electron beam into a collector of a high-performance multi-chamber klystron |
-
1966
- 1966-10-17 US US587133A patent/US3445714A/en not_active Expired - Lifetime
- 1966-10-19 GB GB46733/66A patent/GB1177947A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2162684A (en) * | 1984-07-17 | 1986-02-05 | Varian Associates | Electron beam scrambler |
| GB2251334A (en) * | 1990-03-08 | 1992-07-01 | Eev Ltd | High frequency amplifying apparatus. |
| US5283534A (en) * | 1990-03-08 | 1994-02-01 | Eev Limited | High frequency amplifying apparatus with a collector which has a periodic amplitude variable longitudinal magnetic field therein |
| GB2251334B (en) * | 1990-03-08 | 1994-02-23 | Eev Ltd | High frequency amplifying apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| US3445714A (en) | 1969-05-20 |
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