Electronically controlled hybrid digital and analog phase shifter
US7355492B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2005 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Apr 11, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The inventions presented herein provide a electronically controlled phase shifters that incorporate analog and digital phase shift architectures in a novel manner that realizes the best advantages of each architecture. This combination of complementary phase shift architectures provides the high-performance and low loss characteristics of switched digital phase shift architectures with the high resolution and precision of continuous analog phase shift architectures. The circuit embodiments are electronically controlled, which simplifies implementation of what is a complex circuit. The analog phase shift elements comprise electronically-tuned varactors, which provide fine resolution and enables the incorporation of active compensation for manufacturing variation before use or for environmental conditions during use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.