Transconductance filter circuit
US7113029B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2005 |
| Grant date | Sep 26, 2006 |
| Priority date | — |
| Expiry date | Apr 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H11/1291
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Transconductance filter circuits. A transconductor includes two inputs for receiving two differential voltages, and a first output terminal and a second output terminal for outputting two differential signals. A first capacitor array includes at least one first switch capacitor unit controlled by a first signal, and a first equivalent capacitor coupled between the first output terminal and the second output terminal when the first signal is enabled. two second capacitor arrays each includes at least one second switch capacitor unit controlled by a second signal, two second equivalent capacitors respectively coupled between the first output terminal and a ground level, and between the second output terminal and the ground level when the second signal is enabled. The capacitance of the first equivalent capacitor exceeds that of the two second equivalent capacitors connected in serial.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.