Electric field sensor with sensitivity-attenuating ground ring

US11772801B2 · kind B2 · utility

Assignee

• Instrumar Limited · CA

Inventors

• Stuart Inkpen · St. John's, CA
• Chris Nolan · St. John's, CA
• Bill Conway · St. John's, CA
• Dana Linfield · Portugal Cove - St. Philip's, CA
• David Bonnell · Reading, GB
• Joshua Swamidas · St. John's, CA
• Ruth Abraham · St. John's, CA

Key dates

• Filing date: Mar 8, 2021
• Grant date: Oct 3, 2023
• Expiry date: Oct 12, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G08B19/02
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An electric field sensor includes an insulating substrate, a plurality of electrodes, an insulator, a plurality vias, and a ground ring. The electrodes are disposed on the substrate. The insulator is disposed over the electrodes. The vias are coupled to the electrodes and extend through the substrate at a right angle to the electrodes. The ground ring is disposed around the electrodes and the vias and is configured to attenuate a sensitivity of the sensor to electric fields outwards of the ground ring.