Apparatus for amplifying differential signal
US7405621B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2006 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Nov 17, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45686
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus for amplifying differential signals is provided. The apparatus comprises a differential amplifier, a first impedance component, a second impedance component, a voltage source and a high-pass filter. The differential amplifier receives an input differential signal with a first terminal and a second terminal. The differential amplifier also drains currents from the voltage source into a third terminal and a fourth terminal via the first and the second impedance components respectively. The high-pass filter receives the input differential signal and outputs a control differential signal to control the first and the second impedance components so that the impedance of the first and the second impedance components vary inversely in response to the voltages at the first and the second terminals respectively when the state of the input differential signal changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.