Hemispherical array antenna
US11569587B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2021 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Oct 22, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/246
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multibeam hemispherical X-band array inserts nulls at horizontal and near horizontal angles to suppress interfering signals, without degrading authentic signals arriving at other angles. The multibeam hemispherical array includes three annular (360) rows of antenna elements, each row having 64 elements. Elements of the first row, which have the smallest elevation angle, have pairs of circular patches coupled with a phase delay line. Each pair of circular patches is spaced apart from and aligned with two pairs of similarly shaped (circular) and sized parasitic directors. The spacing between driven patches of adjacent elements in a row is about equal to one half of the wavelength of the radiated wave. The array fits within a conventional 24-inch diameter marine radome.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.