Tunable impedance surface
US6538621B1 · kind B1 · utility
80Cited by
50References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2000 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Mar 29, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0442
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A tuneable impedance surface for steering and/or focusing a radio frequency beam. The tunable surface comprises a ground plane; a plurality of elements disposed a distance from the ground plane, the distance being less than a wavelength of the radio frequency beam; and a capacitor arrangement for controllably varying the capacitance of at least selected ones of adjacent elements. A method of tuning the high impedance surface allows the surface to mimic, for example, a parabolic reflector or a diffraction grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.