Inductively coupled wireless system and method
US6424820B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1999 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Apr 2, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2420/07
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A short range inductively coupled wireless communication system employs analog frequency modulation of a high frequency carrier and magnetic coupling between a transmitting antenna and a receiving antenna. A transmitter coupled to the transmitting antenna modulates multiple high-fidelity analog audio signals and digital control messages onto separate high frequency (“HF”) carriers. The electric field portion of the transmitted electromagnetic field is substantially eliminated during transmission, while the magnetic field portion is substantially unaffected. The receiving antenna is coupled to a demodulator which reproduces the audio frequency signals and decodes control messages sent by the transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.