Signal coupling systems with enhanced isolation and dynamic range
US6861903B1 · kind B1 · utility
1Cited by
6References
20Claims
0Family size
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Key dates
| Filing date | Aug 27, 2003 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Sep 19, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/22
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Signal coupling systems are provided which enhance signal isolation and dynamic range with structures that increase bias voltages in upstream signal amplifiers to guard against transistor saturation that would otherwise increase current drain, reduce response time and possibly cause lock-up of an associated gain-control system. Dynamic range is thus enhanced because these systems can operate over an extended range of source signals. The increased bias voltages also decrease parasitic junction capacitances which increases input impedances and thereby enhances signal isolation and reduces signal distortion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.