Systems and methods for variable gain tuning of matching networks
US11923175B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2021 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Dec 6, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/4645
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method and apparatus for utilizing a variable gain algorithm for adjusting a capacitor in an automatic radio frequency (RF) impedance matching network. The apparatus may operate in a closed-loop feedback control system, with one or more error signals driving the capacitors within the system. To achieve a critically damped control system response, multiple operating regions for the matching network and its constituent elements may be identified and a set of gains (e.g., different per region) may be applied to the error signals in the control system when operating in those regions. An operating region may be defined by characteristics of the input signals measured by the apparatus, calculated by the apparatus, or the state of the apparatus itself. These features may be arranged in a look up table (or determined by calculation) for the apparatus to use to determine the variable gains in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.