Low profile electric field sensor
US4383260A · kind A · utility
23Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1981 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Mar 27, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q23/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A low profile electric field sensor is arranged to sense electric field potentials with respect to a local ground plane. The sensor includes an antenna in a generally planar format with a major dimension extending generally parallel to the local ground plane. To maintain signal to noise ratio, while at the same time minimizing the height of the antenna so as to provide a low profile, the antenna is coupled to a charge amplifier. The charge amplifier comprises an operational amplifier, preferably with a capacitor feedback between output and an inverting input, and the antenna is conductively connected to the inverting input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.