Radar array phase shifter verification
US11226405B2 · kind B2 · utility
2Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2019 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Jul 13, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/3233
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved circuit configuration is disclosed for calibrating and/or verifying the operation of phase shifters in a phased array radar system. In one illustrative embodiment, a method includes: (i) programming a set of phase shifters to convert a radio frequency signal into a set of channel signals; (ii) splitting off a monitor signal from each channel signal while coupling the set of channel signals to a set of antenna feeds; and (iii) while taking the monitor signals in pairs associated with adjacent channels, measuring a relative phase between each pair of monitor signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.