Logarithmic IF amplifier with dynamic large signal bias circuit
US6750715B2 · kind B2 · utility
18Cited by
2References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2001 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Apr 16, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G7/001
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus of amplifying signals. One method includes receiving a variable power supply, generating a variable bias current, and applying the bias current to a load such that an average output voltage is generated. The method further includes receiving an input signal, generating a current proportional to the input signal, and subtracting the current from the variable bias current. As the variable power supply changes value by a first amount, the variable bias current is varied such that the average output voltage varies by the first amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.