Dielectrically-loaded antenna
US7903044B2 · kind B2 · utility
5Cited by
11References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2008 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Aug 8, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q11/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A dielectrically loaded multifilar helical antenna having an operating frequency in excess of 200 MHz has an electrically insulative core with a relative dielectric constant greater than 5 occupying the major part of the interior volume defined by a three dimensional antenna element structure having, in one embodiment, eight coextensive helical tracks and, in another embodiment, six such tracks. The antennas are backfire or endfire antennas, all helical elements being phased so as to contribute to a circular polarization resonance at the operating frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.