Phase measurement device, method, program, and recording medium
US7466141B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2005 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Feb 6, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A phase measurement device measures an output of an amplifier when an input signal having input frequency components is fed to the amplifier, and includes multipliers for orthogonally transforming the output of the amplifier a phase acquisition section for acquiring phases θ1 and θ2 of the input frequency components in the output of the multipliers, and θ3 and θ4 (third distortion), and θ5 and θ6 (fifth distortion) of the distortion components, a match time/phase measurement section for measuring a match time point Δt when θ1 and θ2 match each other and a distortion component phase measurement section for measuring phases θ3 to θ6 at the match time point Δt. The phase acquisition section acquires at least one of θ1 and θ2, and θ3 and θ5 (with the frequencies higher than those of θ1 and θ2) or θ4 and θ6 (with the frequencies lower than those of θ1 and θ2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.