Efficient high latitude service area satellite mobile broadcasting systems
US6223019A · kind A · utility
20Cited by
83References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1998 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | May 20, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/18523
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A satellite audio broadcasting system for mobile and fixed receivers at or near the earth's surface in geographic service areas at latitudes above about 30 degrees N or below about 30 degrees S include a satellite constellation of two or more satellites, each in its own geosynchronous orbit, with each orbit having orbital parameters that provide elevation angles of more than 35 degrees throughout the service area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.