Antenna systems for omnidirectional pattern
US4672387A · kind A · utility
10Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1985 |
| Grant date | Jun 9, 1987 |
| Priority date | — |
| Expiry date | Mar 4, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/007
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna system which has omnidirectional coverage in azimuth and sectoral coverage in elevation. A main reflector including a reflecting surface has polar symmetry about the Z-axis. It also has a cross section in any plane containing the Z-axis which satisfies the laws of power conservation and reflection. It is determined by the desired far-field pattern and the microwave feed pattern (for example TM.sub.01) employed. Single or dual reflector systems are described. Using the system on "receive" with multiple "feeds", full azimuthal direction finding of incident radiation can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.