Oscillator circuit with RF suppression
US9869698B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 2011 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Jan 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2200/0012
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An oscillator circuit includes a phase-locked loop, a crystal resonator, first and second capacitors, and first and second impedance elements. The phase-locked loop is coupled between a first node and a second node. The crystal resonator is also coupled between the first node and the second node. The first capacitor is coupled between the first node and ground, and the second capacitor is coupled between the second node and ground. The first impedance element is coupled in a first circuit path from the first node to ground through the first capacitor. The second impedance element is coupled in a second circuit path from the second node to ground through the second capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.