Slotted bifilar or quadrifilar helix antenna
US8314750B1 · kind B1 · utility
9Cited by
1References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 28, 2010 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | May 26, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/24
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A slotted bifilar or quadrifilar helix antenna has a plurality of helical antenna elements. The antenna elements have an outer planar surface. A slot element is secured to an interior of the outer planar surface. The slot element extends radially inwardly to a slot element edge. At least two radially opposite slot element edges define a tapered slot. At a shorted point on the antenna, at least one radially opposite pair of slot elements are electrically shorted together. A feed point is axially offset from the shorted point along the antenna axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.