Scanning antenna with beam-forming waveguide structure
US7667660B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2008 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Aug 8, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/15
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A scanning antenna with an antenna element having an evanescent coupling portion includes a waveguide assembly including a transmission line, adjacent the coupling portion, through which an electromagnetic signal is transmitted, permitting evanescent coupling of the signal between the transmission line and the antenna element. First and second conductive waveguide plates, on opposite sides of the transmission line, define planes that are substantially parallel to the axis of the transmission line, each plate extending distally from a proximal end adjacent the antenna element, whereby the propagated signal forms a beam that is confined to the space between the plates and thus limited to a plane that is parallel to the planes defined by the plates. The signal coupled between the transmission line and the antenna element is preferably polarized so that its electric field component is in a plane parallel to the planes defined by the plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.