Method for an adaptive transconductance cell utilizing arithmetic operations
US9608582B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2015 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Jun 1, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G1/0029
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A first transconductance cell having a differential input voltage ΔV1 and a forced output current ΔI1, has a bias set by a feedback loop. A second transconductance cell having a differential input voltage ΔV2 and using the same biasing as the first cell has analytically identical transconductance. The second transconductance cell produces an output current ΔI2 dependent on the product of the output current ΔI1 of the first transconductance cell and the quotient of the second differential input voltage ΔV2, and the first differential input voltage ΔV1. The adaptive transconductance cells can be used to generate mathematic functions such as multiplication and division.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.