Information transmission device and method for systems using radiating waveguides
US6034646A · kind A · utility
3Cited by
9References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1997 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Feb 7, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/0043
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In an information transmission device and method for systems using radiating waveguides along which a mobile travels, an unmodulated carrier wave is injected into the radiating waveguide. Some of the energy of the unmodulated carrier wave is sampled locally along the radiating waveguide. A local modulation signal representing information addressed to the mobile modulates the unmodulated carrier wave. The modulated carrier wave is radiated to the mobile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.