Scanning antenna including a dielectric waveguide and a rotatable cylinder coupled thereto
US6211836A · kind A · utility
204Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1999 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Jul 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/175
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A scanning antenna includes a cylinder coupled to a dielectric waveguide into which an electromagnetic wave is launched. The cylinder includes rows of features such as recesses or stubs of differing vertical dimensions and periods. The cylinder when rotated directs the coupled radiation over a range determined by the periods of features in the rows and the rotation of the cylinder. Both transmitters and receivers are described. Benefits are described in connection with different cross section geometries to the waveguide. Also, both linear and circular polarization operations are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.