Coaxial test fixture for determining shielding effectiveness of a device against interfering electromagnetic fields
US4814713A · kind A · utility
4Cited by
6References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Jan 21, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R29/0835
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A non-intrusive, annular, broad range current sensor is located about the transmission line at the shorting location of the shielding device. Effectiveness of the shielding of the device can be readily determined for any particular predetermined frequency or range of frequencies by noting the current sensor readings and output voltage. That is, the lower the output voltage/sensor voltage readings in the test frequency range, the higher the shielding effectiveness of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.