Method and apparatus for reducing noise in crossed-field amplifiers
US4082979A · kind A · utility
3Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1976 |
| Grant date | Apr 4, 1978 |
| Priority date | — |
| Expiry date | Sep 29, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J25/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Noise in reentrant-stream crossed-field amplifiers is suspected of being generated by electrons re-entering the interaction region with large amplitude cycloidal motion near the slow-wave circuit. Means to increase the electric field in a portion of the drift region preceding the circuit lowers the noise, presumably by collecting these electrons. The field may be increased by decreasing the spacing between cathode and drift electrode or by applying a bias voltage on an insulated electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.