Multi-beam antenna
US6323822A · kind A · utility
6Cited by
18References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2001 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Feb 5, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A modified offset parabolic antenna is disclosed which provides improved gain when receiving satellite broadcasts from geosynchronous transmission sources spaced substantially 10 degrees apart. The surface of the reflector is defined by a Zernike expansion mapped to a unit circle. The values of the parameters of the Zernike expansion are selected to provide a shaped reflector surface which focuses beams from the three separate sources onto three focal points such that the gain of the antenna is maximized. A peak beam gain for an offset beam of substantially 33.9 dBi has been achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.