Broadband cavity-like array antenna element and a conformal array subsystem comprising such elements
US5434581A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1993 |
| Grant date | Jul 18, 1995 |
| Priority date | — |
| Expiry date | Nov 16, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/205
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention concerns a broadband antenna element for array antennas using microstrip technology. In accordance with the invention, an etched patch 2 on a dielectric substrate 1 is disposed at the bottom of a cavity 7 defined by conductive walls 8, cylindrical walls, for example, or walls of more complicated geometry. Depending on the embodiment, the conductive walls 8 can extend through the dielectric substrate 1 to form an electric contact with the ground plane 6 or a second resonator comprising a second etched patch 12 on a second thin dielectric substrate 11 may be placed in front of the cavity 7. The invention also applies to antenna subarrays constructed from a plurality of these antenna elements and to array antennas constructed from a plurality of these subarrays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.