Linearizer for linearizing a non-linear component controlled by control voltage
US5847604A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1997 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Jan 28, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3042
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Non-linearity of a voltage-controlled non-linear amplifier/attenuator is compensated by placing a non-linear circuit in the feedback path of an operation amplifier of a linearizer, the circuit including one or more differential amplifiers connected in parallel. For example, one amplifier can be a low-gain amplifier whose exponential range is at the lower end of the control voltage range, and another can be a high-gain amplifier whose exponential range is at the upper end of the control voltage range. When a necessary number of differential amplifiers are used in the feedback path, it is possible to compensate for the non-linearity of the non-linear component to a desired extent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.