Tunable impedance network
US9548715B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2013 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Dec 3, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/465
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A tunable impedance network and a method for tuning the tunable impedance network are disclosed. In one aspect, the tunable impedance network comprises a plurality of transformers connected in series. Each transformer has a primary winding and a secondary winding. The transformers have a voltage transformation ratio of N:1 with N>1. An impedance structure, acting as a resonant circuit together with the inductance of the secondary winding, is connected at the secondary winding of each transformer. A control circuit or processor is configured to tune the imaginary part of at least one of the impedance structures so as to change its resonance frequency to mimic a reference impedance. The control circuit is further configured to tune the real part of at least one of the impedance structures so as to change its Q-factor to mimic the reference impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.