System and low-loss millimeter-wave cavity-backed antennas with dielectric and air cavities
US6975276B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 2004 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Mar 10, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q23/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A cavity backed millimeter-wave antenna comprises a dielectric cavity within a semiconductor substrate having walls defined by a plurality of vias through the substrate, and a gas cavity external to the substrate aligned with the dielectric cavity. A ground plane side of the substrate may be devoid of ground plane conductive material substantially between the walls of the dielectric cavity. In a slot-antenna embodiment, a microstrip feed line may be disposed on the substrate across a slot over the cavities. The slot may be a rectangular region without conductive material on a circuit side of the substrate over the dielectric cavity. In a dipole embodiment, a first pole comprising conductive material may be disposed on a ground plane side of the substrate over the cavities, and a second pole comprising conductive material may be disposed on a circuit side of the substrate over the cavities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.