Wireless communication system using only the magnetic field component
US6219529A · kind A · utility
3Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1995 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Jul 18, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In order to eliminate the unnecessary power consumption caused by the increase in frequency associated with wireless communication systems using electromagnetic induction techniques, the wireless communication system of the present invention modulates and transmits a magnetic field in accordance with information. A close-range receiver is provided with an amorphous magnetic impedance element having an impedance which varies in accordance with the modulated characteristic of the magnetic field. Use of an amorphous magnetic impedance element in the receiver results in a reduction in power and increase in sensitivity of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.