Tapered direct fed quadrifilar helix antenna
US6288686A · kind A · utility
14Cited by
7References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2000 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Jun 23, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/36
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A quadrifilar helical antenna is provided having a feedpoint for the antenna connecting to individual helical antenna elements. Each antenna element tapers from a maximum width at the feedpoint to a minimum width. The tapered antenna elements provide impedance transformation. The antenna produces a cardioid pattern that corresponds to antennas with constant width antenna elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.