Millimeter wave imaging apparatus
US11156710B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 9, 2016 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Apr 28, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/358
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A millimeter wave imaging apparatus, including: a crystal oscillator, a power divider, a millimeter wave transceiver, a local-oscillation signal processor, a second frequency mixer and an image processor; the power divider performs power distribution on an oscillation signal generated by the crystal oscillator, and outputs a clock trigger signal and a local-oscillation signal; the local-oscillation signal processor processes the local-oscillation signal and outputs a second local-oscillation signal; the millimeter wave transceiver unit processes an echo signal reflected by an object to be detected, and outputs a first intermediate-frequency signal; the second frequency mixer mixes the second local-oscillation signal and the first intermediate-frequency signal, and outputs a second intermediate-frequency signal; the image processor processes the second intermediate-frequency signal, and images the object to be detected. As the crystal oscillator is used as both a clock trigger source and a local-oscillation signal source, the apparatus does not need additional local-oscillation signal sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.