Direct sampling of received signals in radar
US9983295B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 2015 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Nov 29, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4876
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
It is common practice in modern radar to utilize some type of downconversion to an intermediate frequency or baseband before analog-to-digital conversion takes place. Several microwave components are needed for this downconversion process, including a tunable local oscillator, bandpass filters, amplifiers, and other signal conditioning devices. The present invention eliminates many microwave components in the radar receiver by sampling the received signal directly, without downconversion or mixing. The manipulation of the received signals that was formerly done with microwave hardware is now done in a digital signal processor. In addition to simplifying the receiver hardware, this invention will also lead to better utilization of the frequency band, less interference from adjacent bands, improvements in system reliability and stability, reduction in system operation and maintenance costs, and will facilitate future system modifications and upgrades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.