Amplifier for stably maintaining a constant output
US5475342A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1994 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Apr 15, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3084
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier having an automatic threshold control circuit (ATC) and a limiting amplifier. The ATC detects and holds a top value (peak value) and bottom value of an input signal, and outputs the middle value between the top and bottom values as a reference voltage. The limiting amplifier amplifies the input signal in a linear operating region whose center is set at the reference voltage, thereby maintaining the output amplitude at a constant value. Even if the amplitude and the level of the input signals instantaneously changes by a large amount, the ATC can follow the change, so that the offset compensation and gain compensation of the amplifier can be achieved instantaneously. This makes it possible to continue producing the output of a constant amplitude with little phase deviations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.