Multi-polarization HF NVIS for vertical lift aircraft
US11539118B2 · kind B2 · utility
0Cited by
30References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2021 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Feb 20, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/336
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system of high-frequency (HF) antennas is disposed on various aircraft body panels. The antennas are configured for orthogonal polarization such that NVIS may be operable no matter the state of the ionosphere. The antennas are disposed on substantially perpendicular body panels so that, when operated in concert, the resulting signals have opposite polarization and at least one signal will bounce off the ionosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.