Magnetic dipole antenna structure and method
US6567053B1 · kind B1 · utility
26Cited by
9References
27Claims
0Family size
Inventors
Key dates
| Filing date | Feb 12, 2001 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Apr 29, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q13/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The spiral sheet antenna allows a small efficient antenna structure that is much smaller than the electromagnetic wavelength. It achieves the small size by introducing a high effective dielectric constant through geometry rather than through a special high dielectric constant material. It typically includes a rectangular cylinder-like shape, with a seam. The edges of the seam can overlap to make a high capacitance, or they can make a high capacitance by simply having the edges of the seam very close to each other. The high capacitance serves the same role as a high dielectric constant material in a conventional compact antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.