Integrable amplitude-locked loop including an acoustic resonator
US7218181B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2004 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Dec 29, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J3/22
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplitude-locked loop (ALL) includes: a comparator circuit having a first input, a second input and an output, said first input receiving an electric reference signal; a loop filter having an input connected to said output of said comparator circuit and having an output generating an electric control signal (Vtune); a circuit generating an electric signal to be controlled, transmitted to said second input of said comparator circuit. The circuit comprises an acoustic resonator having a BAW-type resonator having a first and second resonant frequencies and associated with a first inductive partner element for removing said second resonant frequency and with a second capacitive partner element for tuning said first resonant frequency, said at least first resonator component being adjustable via said electric control signal (Vtune).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.