GB1298191A - Microwave noise source tube - Google Patents
Microwave noise source tubeInfo
- Publication number
- GB1298191A GB1298191A GB2050566A GB2050566A GB1298191A GB 1298191 A GB1298191 A GB 1298191A GB 2050566 A GB2050566 A GB 2050566A GB 2050566 A GB2050566 A GB 2050566A GB 1298191 A GB1298191 A GB 1298191A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- cathode
- annular space
- microwave
- employed
- 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
- H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
- H01J25/42—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and with a magnet system producing an H-field crossing the E-field
- H01J25/46—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and with a magnet system producing an H-field crossing the E-field the backward travelling wave being utilised
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B29/00—Generation of noise currents and voltages
Landscapes
- X-Ray Techniques (AREA)
Abstract
1298191 Backward-wave tubes S-F-D LABORATORIES Inc 9 May 1966 [7 May 1965] 20505/66 Heading H1D In a microwave noise source tube a backward wave is formed in the annular space between a cylindrical cathode emitter and the surrounding anode. Crossed D.C. electric and magnetic fields occupy the annular space in which the space charge secondary electrons from the cathode interact with the travelling microwave. The anode potential is such as to cause back bombardment of the cathode emitter. The voltage applied between the cathode and anode is varied so to prevent lack of coherency due to possible bunching of the secondary electrons in the annular space and to vary the noise energy frequency. A copper block is inserted between the upstream and downstream ends of the anode to present feedback. Small thermionic emitter zones may be provided to initiate electron emission, otherwise field emission or a gas filling can be employed. The anode may be of the forms shown in Figs. 3, 4, 7, 9 and 11. Interleaved teeth, of length one quarter of the resonance wavelength may be used, or, alternatively, (Fig. 5, not shown), a helix forming a rectangular toroid is employed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US45414265A | 1965-05-07 | 1965-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1298191A true GB1298191A (en) | 1972-11-29 |
Family
ID=23803480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2050566A Expired GB1298191A (en) | 1965-05-07 | 1966-05-09 | Microwave noise source tube |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1605061A (en) |
| GB (1) | GB1298191A (en) |
-
1966
- 1966-05-06 FR FR1605061D patent/FR1605061A/fr not_active Expired
- 1966-05-09 GB GB2050566A patent/GB1298191A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1605061A (en) | 1973-01-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |