Electric field detector
OwnerMark Tretheweyinventor
Life of this patent
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Abstract
The present invention relates to an improved method to detect electric field intensity. It is a generational improvement on free body field detectors and uses a ferrite sensor element to increase detector capacitance and hence signal output. This configuration also provides reduced detector volume, increased stability and a reduction in susceptibility to capacitive coupling. This system provides an output signal proportional to the electric field strength integrated over the volume of the ferrite detector element. Further this system is low cost and passive. A passive system uses no supply power and does not suffer from increased noise floor characteristics like active devices.
Claims10
An electric field intensity detector comprising:
- a ferrite element as the major detection element, wherein the ferrite micro-structure inherently improves detector output signal levels and stability;
- and
- means for detecting charge induced on the ferrite element by a time harmonic electric field comprising a printed circuit board with appropriately placed copper sections on the upper and lower side;
- and
- means for fixing the ferrite member in relation to the printed circuit board and for providing an electrical connection between the ferrite and one of the copper sections;
- and
- circuitry to monitor the induced voltages on the copper sections on the printed circuit board, and produce a stable time harmonic output voltage proportional to the incident time harmonic electric field intensity.
Dependencies are inferred from the claim text.