Area-optimized analog filter with bandwidth control by a quantized scaling function
US8816762B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2011 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Jan 13, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2210/036
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A programmable active frequency-selective circuit includes a first capacitor having a fixed value and a second capacitor coupled in parallel to the first capacitor and having a plurality of switchable capacitors connected in parallel to each other. The programmable active frequency-selective circuit further includes a plurality of switches each being associated with one of the switchable capacitors, and a control port coupled to the switches. The capacitors may be varied to account for processing variations that occur during manufacturing of the programmable active frequency-selective circuit. The capacitors values may also be varied to change the bandwidth and/or gain of the programmable active frequency-selective circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.