Patch radiator with cavity backed slot
US8077093B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 2007 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Aug 3, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/38
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A patch radiator for use in beamformed or steerable antenna systems which maximizes upper frequency limit and simultaneously minimizes the lower frequency limit, by providing an annular patch configuration in which a central region of the patch element is devoid of material, whereby this central region is of a different shape from the shape of the exterior perimeter of the patch element. One possible configuration of such a patch radiator comprises a square exterior shape, enclosing a central circular region of removed material. In this manner, the upper frequency limit threshold tends to rise as the interior annular perimeter is reduced. Preferably, the exterior and interior perimeters have no interior angles of more than 180°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.