Method for achieving terminal-pair definition of four-terminal-pair impedance and application thereof
US11965920B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2023 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Nov 6, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for achieving terminal-pair definition of four-terminal-pair (4TP) impedance and an application thereof are provided, which belongs to the field of precision measurement and metrology. A current output terminal of a two-stage follower is connected to a high current terminal of impedance through a coaxial line, and a voltage output terminal of the two-stage follower is connected to a high voltage terminal of the impedance through the coaxial line, which makes current of the high voltage terminal be 0, and core wire currents and outer wire currents of the high current terminal equal and reverse. The terminal-pair definition of the 4TP impedance can be satisfied; and the follower is added to make a bridge ratio variable and isolate effects of bridge load changes, thereby accelerating a balancing speed of the 4TP impedance bridge, and achieving accurate and fast comparative measurement having high precision of the 4TP AC impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.