Tunable bandpass filter
US10158344B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2017 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Jan 24, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J2200/33
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A single-chip tunable bandpass filter is provided having a bandpass filter circuit with all tuning components for the bandpass filter circuit formed on the single-chip to provide a programmed center frequency for the tunable bandpass filter. The bandpass filter circuit may include, but is not limited to, a plurality of serially coupled singe stage biquad filter circuits coupled to an input formed on the single-chip and configured to provide a bandpass filtered output signal to an output formed on the single-chip. The bandpass filtered output may be provided by an output buffer formed on the single-chip. The single-chip includes at least one tuning input to receive data for tuning stored in a data register formed on the single-chip. The data register provides control bits to the tuning components that include a programmable resistor responsive to the control bits to vary the programmable resistor to adjust programmed center frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.