Steerable uplink antenna for moveable redundant beams
US6825815B1 · kind B1 · utility
5Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 2003 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Jun 3, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/247
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A satellite antenna system (30) that employs a small phased antenna array (46) acting as redundant antenna. Because the phased array (46) is steerable, it can be selectively directed to any of the cells (16) on the Earth (12) in the event that the LNA in an antenna channel (32) fails. The phased array (46) is switched into each antenna channel (32) after the channel front end (40) where a switch (56) used to switch in the phased array (46) is after the amplification in the channel (32). Therefore, the switch (56) does not significantly affect the noise figure of the channel front end (32).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.