Broad band antennas and feed methods
US9627777B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 10, 2012 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Mar 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Two or more Vivaldi antennas, consisting of two plates each, each with the antenna's natural impedance of approximately 100 ohms, are placed in parallel to achieve a 50 ohm impedance in the case of two antennas or other impedances (100/n ohms) for more than two antennas. A single Vivaldi antenna plate (half Vivaldi antenna) over a ground plane can also be used to achieve a 50 ohm impedance, or two or more single plates over a ground plane to achieve other impedances. Unbalanced 50 ohm transmission lines, e.g. coaxial cables, can be used to directly feed, the dual Vivaldi (four plate) antenna in a center fed angled center departure, or more desirably, a center fed offset departure configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.