RF voltage and current (V-I) sensors and measurement methods
US11600474B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2020 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Dec 27, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J37/32082
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A radio frequency (RF) system includes a RF power source configured to power a load with an RF signal; an RF pipe including an inner conductor and an outer conductor connected to ground coupling the RF power source to the load; and a current sensor aligned to a central axis of the RF pipe carrying the RF signal. A sensor casing is disposed around the RF pipe, where the sensor casing includes a conductive material connected to the outer conductor of the RF pipe. A gallery is disposed within the sensor casing and outside the outer conductor of the RF pipe, where the current sensor is disposed in the gallery. A slit in the outer conductor of the RF pipe exposes the current sensor to a magnetic field due to the current of the RF signal in the inner conductor of the RF pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.