Filtering circuit with jammer generator
US8208849B2 · kind B2 · utility
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1References
14Claims
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Key dates
| Filing date | Apr 29, 2009 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Sep 6, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04K3/228
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A filtering circuit with a jammer generator cancels a jammer in wireless signals with little degradation of the signal-to-noise ratio (SNR). The filtering circuit may include a jammer generator which acquires information of period and phase of a sinusoidal jammer signal in a composite input sinusoidal signal, which includes the jammer signal and a desired signal, and outputs a pseudo sine-wave with a period and phase corresponding with the period and phase of the jammer signal acquired, and an adder which outputs a difference between the input and output signals of the jammer generator as the desired signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.