Metamaterial enabled compact wideband tunable phase shifters
US8680945B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2011 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Jun 18, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/345
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Negative refractive index (NRI) transmission line (TL) metamaterial may be applied to phase shifter devices. In some aspects, a one dimensional NRI TL enabled compact and tunable phase shifter is provided. The phase shifter comprises cascaded sections of NRI metamaterial TL and positive refraction index TL with tailored dispersion characteristics. The phase shifter, for example as compared to common delay line based or ferrite based phase shifters, may be compact in size, may be continuously tunable from negative to positive phases, may have flatter and more linear phase responses over wideband, may have small group delays, and may be compatible to microwave circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.