Reflection-based RF phase shifter
US10062946B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2016 |
| Grant date | Aug 28, 2018 |
| Priority date | — |
| Expiry date | Aug 9, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Programmable multi-reflective phase shifters which provide reduced root-mean-square phase error, can be optimized for a desired frequency band, can compensate for process variations arising during manufacture, and can help offset system level performance shortfalls. Embodiments include a hybrid coupler (e.g., a Lange hybrid coupler) in combination with a multi-reflective reactance-based terminating circuit with a number of different configurations that permit various modes of operation, including a thermometric mode, a phase overlap mode with interstitial phase shift states, an extended range phase shift mode, and a “tweak bit” mode. A number of programmable or selectable RF phase shifters can be series or parallel connected to provide a desired gamut of phase shift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.