Cylindrical ray imaging steered beam array (CRISBA) antenna
US6690333B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 1, 2002 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | May 1, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/008
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A cylindrical, ray-imaging, electronically steered array antenna, whose radiating array elements are disposed on a cylindrical surface sector above an electrically conductive ground plane that enhances the antenna gain. The conductive ground plane forms an integral part of the antenna, and the required dimensions of this ground plane depend on the array radius, and on the lowest elevation coverage angle from the (possibly tilted) ground plane. The antenna of the present invention is further characterized by a modular design that tailors the required antenna gain and azimuthal directivity through the stacking of identical antenna segments side by side. The antenna design uses the multiple-beam ray focusing property of a microwave lens when feeding a circular ring array, while producing at the same time coherent ray imaging from a bottom metal plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.