Low angle, high angle quadrifilar helix antenna
US6344834B1 · kind B1 · utility
32Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2000 |
| Grant date | Feb 5, 2002 |
| Priority date | — |
| Expiry date | Apr 20, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/362
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna is provided that can switch from generating a low radiation angle to a high radiation angle. The antenna comprises a quadrifilar helix antenna in which the helical antenna elements have a first pitch at one end of the antenna and a second pitch at the other end of the antenna. Controlling the phase of a driving signal and isolating one section of the antenna are steps that facilitate switching the antenna from generating a pattern with a low elevation angle or high elevation angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.