Charge transfer circuit for compact modulators
US11005495B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2020 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Apr 3, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/456
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a current generation circuit. In one aspect, the circuit includes a current source transistor and a current sink transistor connected to the current source transistor in series, with respective sources of the current source and sink transistors being connected with each other at a common node. A voltage difference between respective gates of the current source and sink transistors defines a current value flowing through the series, the voltage difference being variable such that the current value is either time-dependent or time-independent. Respective drains of the current source and sink transistors provide a high resistance output necessary to provide a current source or sink function thereby rejecting influence of drain variation or error on the current value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.