Apparatus and method for canceling DC errors and noise generated by ground shield current in a probe
US7005868B2 · kind B2 · utility
95Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 16, 2004 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Apr 16, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R1/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A probe for connecting a device under test to a measurement device that corrects for dc errors and noise generated by the current flowing through the ground shield of a transmission line used by the probe. The probe identifies a voltage drop in the ground preferably using an additional line between the device under test and the measurement device. The signal provided to the measurement device is corrected based on the identified voltage drop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.