Patent · US Expired

Electron tube, especially transmitting tube, with a device for eliminating interfering retarding-field effects

US4501990A · kind A · utility

0Cited by

5References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventor

Jochen Stahl · Schwieberdingen, DE

Key dates

Filing date	Dec 16, 1983
Grant date	Feb 26, 1985
Priority date	—
Expiry date	Dec 16, 2003

Classification

Technology area (CPC H)Electricity
CPC primaryH01J21/18
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Electron tube assemble having coaxial electrodes and grids, including a tube with given electrode trajectories and oscillation period, and interfering retarding-field effect elimination means disposed around the tube for generating a magnetic field having field lines running inside the tube substantially parallel to the electrodes and grids deflecting the trajectories of the electrons moving radially with respect to the anode during operation of the tube and substantially perpendicularly intersecting and elongating the trajectories of the electrons for increasing the oscillation period of the electrons and eliminating interfering retarding-field effects.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.