RF system with integrated phase shifters using dual multi-phase phase-locked loops
US9343809B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2013 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Sep 14, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/23
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An RF system comprising of outputs to an electronically scanning antenna for radiating electromagnetic energy; at least one waveform generator; two multiphase phase-locked loops integrated with the waveform generator, the phase locked loops operating to provide multiple shifted phases to a waveform. Optionally, the two multiphase phase-locked loops may each be divided down by a bank of frequency dividers to further increase the number of phase shifts. The phases generated from each multiphase phase-locked loops are selected with multiplexers then mixed together. These upper or lower sidebands are then mixed with the up converted waveform which results in a phase shift for the waveform associated with each antenna element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.