Downconversion strategies for reducing interference in wanted signals
US8099068B2 · kind B2 · utility
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13Claims
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Assignee
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Key dates
| Filing date | May 22, 2009 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Jun 4, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/1036
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A receiver for isolating a wanted signal in a received signal, the receiver comprising a downconverter for downconverting the received signal in frequency to produce a downconverted signal, a filter with a passband intended for isolating that part of the spectrum of the downconverted signal that contains the wanted signal and a controller that seeks to avoid or reduce the effect of passband intrusion in the form of a negative frequency representation of an interferer, appearing in the spectrum of the received signal, upconverted in frequency to the passband. The invention consists in corresponding methods also.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.