Extending bandwidth of analog circuits using ferroelectric negative capacitors
US11349440B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2020 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Sep 25, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H5/12
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Embodiments relate to a circuit implementation for extending the bandwidth of an amplifier. The extended bandwidth amplifier includes an amplifier coupled between an input node and an output node of the extended bandwidth amplifier. The amplifier has an input capacitance and an output capacitance. The extended bandwidth amplifier additionally includes a first digitally-trimmable negative-capacitance capacitor coupled between the input node of the extended bandwidth amplifier and a power supply terminal. The digitally-trimmable negative-capacitance capacitor includes a first branch, a second branch, and a controller. The first branch includes a first capacitor having a first negative capacitance, and a first switch. The second branch includes a second capacitor having a second negative capacitance, and a second switch. The controller is configured to turn on the first switch and the second switch based on the input capacitance of the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.