Array antennas with notched radiation patterns
US6473054B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2001 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Aug 10, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/29
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A source of interference signals may be present at a fixed incident angle relative to a stationary antenna. Horizontal array antennas are provided with radiation pattern notches or nulls at selected fixed angles to suppress reception of interference signals. By excitation of elements on the left side of an array in opposite phase relative to elements on the right side and provision of an appropriate line-length differential between left and right radiation element feed lines, a radiation pattern notch is positioned at a selectable angle relative to boresight. Notch width optimization is provided by use of relative excitation levels of radiating elements as disclosed. Other configurations are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.