Multiband helical antenna
US9847574B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2014 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Sep 13, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/40
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multiband antenna including a feed point, a helical radiating element galvanically connected to and fed by the feed point, the helical radiating element resonating in a Very High Frequency range and an elongate radiating element arranged coaxially within the helical radiating element and galvanically connected to and fed by the feed point, the elongate radiating element extending along only a portion of the helical radiating element, the elongate radiating element having a first resonant frequency and a second resonant frequency, the elongate radiating element operating as a quarter-wavelength monopole at the first resonant frequency and as an eighth-wavelength monopole at the second resonant frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.