Antenna and communication system using the same
US7023395B2 · kind B2 · utility
11Cited by
4References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2004 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | May 19, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q7/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna includes a first core made of magnetic material, a coil including a conductive wire wound around a predetermined region of the first core, and a second core made of magnetic material. The second core is operable to move an inside of the coil. The antenna has a resonant frequency adjustable over a wide rage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.