Millimeter wave imaging systems and methods using direct conversion receivers and/or modulation techniques
US11460572B2 · kind B2 · utility
5Cited by
15References
24Claims
0Family size
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Key dates
| Filing date | Aug 10, 2017 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Aug 2, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/887
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Examples of active millimeter-wave imaging systems are described which may utilize modulation schemes to provide illumination signals. The use of modulation techniques may allow for the use of direct-conversion receivers while retaining an ability to separate desired received signal from self-jamming and/or DC offset signal(s) generated by the direct-conversion receivers. In some examples, modulation schemes include the use of balanced orthogonal codes which may support MIMO or massive MIMO imaging systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.