Tunable transmission line stub coupled to a fluid dielectric
US6870439B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2003 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Apr 13, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/171
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit for processing radio frequency signals. The circuit is a transmission line stub (110) coupled to a fluidic dielectric (108) and includes a composition processor (101) for selectively varying a composition of the fluidic dielectric. Varying the fluid dielectric composition allows the electrical characteristics of the transmission line stub (110) to be dynamically varied in response to a control signal 137. The electrical characteristics that can be varied with the fluid dielectric include, but are not limited to, an electrical length of the stub, a characteristic impedance of the stub, and a frequency response of the stub. The transmission line stub (110) can be electrically shorted to ground or electrically open with respect to ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.