Planar ray imaging steered beam array (PRISBA) antenna
US6680698B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 2002 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | May 7, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A planar, ray-imaging, electronically steered array antenna, whose radiating array elements are disposed on a planar surface 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 height, and on the lowest elevation coverage angle from the (possibly tilted) ground plane. The antenna 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 can generate, with the aid of a multiple-beam microwave network or a two-ended series-feed network, a pair of symmetrically steered beams from an incident wavefront received by a linear (column) or planar array, in conjunction with reflections from a bottom metal plate. The coherent combination of the pair of symmetrically steered beams with the reflections allows an effective doubling of the antenna aperture in elevation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.