Broadband sampling gate circuit capable of eliminating waveform distortions in track hold mode
US5206543A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1992 |
| Grant date | Apr 27, 1993 |
| Priority date | — |
| Expiry date | Jun 16, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/16
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a sampling gate circuit, a broadband and high-precision sampling gate circuit is realized by further employing first and second equivalent sampling networks which are equal to a sampling operation by a first sampling gate circuit. The first and second equivalent sampling networks compensate for distortions in the signal output by the first sampling gate circuit and allow an input waveform to be reproduced at high precision. The output from the first sampling gate circuit is input to a positive terminal of a differential amplifier. The outputs from the first and second equivalent sampling networks are input into two respective negative inputs of a differential amplifier, to cancel the distortions of the signal output from the first sampling gate circuit and input to the positive terminal of the differential amplifier. This device may find particular application in sampling type oscilloscopes or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.