Pseudo low IF for zero IF receiver to reduce dynamic frequency selection (DFS) falsing
US11137475B2 · kind B2 · utility
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2References
20Claims
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Key dates
| Filing date | Oct 4, 2018 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Jul 3, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03375
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pseudo low intermediate frequency (IF) configuration is provided for a receiver having a zero IF radio architecture dedicated for radar detection, in order to reduce false radar detection. Energy from local oscillator leakage is shifted away from DC. After filtering out of the desired sub-channel, the local oscillator leakage energy is suppressed, reducing false radar detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.