Coupled multiband antenna
US8115690B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2009 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Sep 1, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/30
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Free space antenna structures are presented in which multiple radiating elements are disposed proximate to each other. In a structure containing two radiating elements, the radiating element of shorter wavelength is split into a monopole and a dipole that are electrically, but not physically, coupled to each other. The monopole has a length of λ/4 and is attached to the same feed as the longer wavelength radiating element. The dipole has a length of λ/4 and is attached to the same feed as the longer wavelength radiating element. Non-conductive shields prevent contact between the monopole, dipole, and longer wavelength radiating element. The longer wavelength radiating element is formed in a helix outside of which the dipole, and perhaps monopole, is disposed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.