Capacitively loaded quadrifilar helix antenna
US6407720B1 · kind B1 · utility
18Cited by
8References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Jun 23, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q11/083
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A quadrifilar helix antenna is provided having a feedpoint for the antenna connecting to individual helical antenna elements. Each antenna element comprises a normal helix element with a plurality of series capacitors inserted along the element length with a maximum capacitor value at a feed end and a minimum capacitor value at a remote or unfed end.Again, the element is not simply a series of connected capacitors-if it were it would not radiate. The element is a normal element, which is inductive, which has had capacitors inserted along its length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.