Compact microwave source for exciting electrodeless lamps
US5525865A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1994 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Feb 25, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Apparatus for exciting electrodeless lamps. A magnetron for generating electromagnetic energy in the microwave region includes an extension for its antenna terminal. The extension extends the length of the antenna to control the phase of loading on the magnetron. A circular ground flange and perforated screen enclose the electrodeless lamp, permitting microwave energy to excite the gas within the lamp, while confining the energy to the space bounded by the perforated screen and cylindrical ground flange. The extension for the antenna has a length which maintains the reflection coefficient phase to a level which does not adversely disturb the magnetron operating frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.