Auxiliary drag field electrodes
US7675031B2 · kind B2 · utility
29Cited by
17References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 2008 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Oct 16, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/4225
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Auxiliary electrodes for creating drag fields may be provided as arrays of finger electrodes on thin substrates such as printed circuit board material for insertion between main RF electrodes of a multipole. A progressive range of voltages can be applied along lengths of the auxiliary electrodes by implementing a voltage divider that utilizes static resisters interconnecting individual finger electrodes of the arrays. Dynamic voltage variations may be applied to individual finger electrodes or to groups of the finger electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.