Bandpass filter
US11342903B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2020 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Dec 7, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J2200/36
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A bandpass filter configured to receive a temporally modulated periodic input signal Vin(t), and to deliver an output signal Vout(t), and includes, in combination: a phase comparator configured to receive, on a first input, the temporally modulated periodic input signal Vin(t) as first signal, and to generate an output signal with a variable duty cycle; coupled to an injection-locked oscillator configured to receive as input, the output signal from the phase comparator, and to generate a signal Vr(t) that is phase-offset with respect to the output signal from the phase comparator; the phase-offset signal being applied to a second input of the phase comparator as second input signal; and the output signal from the phase comparator being the output signal Vout(t) from the bandpass filter and being representative of the phase difference between the two input signals Vin(t) and Vr(t).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.