Square cell having wide dynamic range and power detector implementing same
US7622981B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 2006 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Jan 21, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06G7/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A square cell comprises first and second bipolar transistors each having an emitter, collector and base, the bases of the transistors being connected for receiving an input voltage, and first and second resistors in series with the first and second bipolar transistors respectively and with a source of reference voltage. The collectors are commonly connected to an output node to supply an output current having a component proportional to the square of the input voltage. Enhanced square law conformance may be produced by adding further pairs of bipolar transistors to the cell, with offset voltage elements coupled between bases of successive transistors on each side of the cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.