Magnetic pseudo-conductor spiral antennas
US8847846B1 · kind B1 · utility
218Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 29, 2012 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Jul 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/27
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A variable permeability antenna apparatus includes a first region configured for coupling with a feed of a radio frequency signal and a second region for transmitting the radio frequency signal. The permeability of material at the second region is greater than the permeability of material at the first region. Also, a spiral antenna for transmission or reception of radio frequency signals is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.