TWT Interaction circuit with broad ladder rungs
US4409518A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1981 |
| Grant date | Oct 11, 1983 |
| Priority date | — |
| Expiry date | Jul 29, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J23/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A slow-wave circuit suitable for a high-frequency traveling-wave tube has an array of metallic ladder rungs extending transversely across an elongated envelope and not in contact with the envelope except at the ends of the rungs. The envelope has a cross-shaped section to provide a fundamental backward wave. The rungs preferably have aligned apertures to pass a beam of electrons in traveling-wave interaction with the circuit. By making the rungs transversely broader than a critical value, the lowest passband of the circuit has poles of impedance at both its ends, whereby more efficient interaction is obtained, along with greater stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.