Noise reduction circuit for canceling leakage signal
US8290451B2 · kind B2 · utility
3Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2007 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Nov 4, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10166
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a noise reduction circuit, a transistor circuit amplifies an input signal and outputs an output signal with supply of power from the DC voltage source via a power supply line circuit. The canceling signal adding circuit acquires and attenuates a part of the output signal, to generate a canceling signal having a phase substantially opposite to a phase of a leakage signal leaking to the power supply line circuit, and having an amplitude substantially the same as an amplitude of the leakage signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.