System and method for simulating the noise characteristics of phase locked loops in transient analysis
US6778025B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2003 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Mar 24, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F30/367
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for simulating the noise characteristics of phase locked loops (PLL's) and other devices. Voltage Controlled Oscillator (VCO) transfer function and phase noise data is first imported for a particular circuit from a Radio Frequency (RF) simulator. The phase locked loop blocks in the circuit are converted to calibrated behavioral-level models. A combined analog/digital model is used to model the VCO, which in turn uses a pseudorandom signal generator for simulating VCO noise. Information about VCO periods is then written to a file or memory for post-processing, such as creating noise spectrum data and noise spectrum plots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.