Dual band antenna arrangement
US8269687B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2007 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Jan 26, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/062
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an antenna arrangement comprising a first and third set of antenna elements, being arranged as a first and third column and aligned along a first and third symmetry axis, respectively, each column comprising elements being operative in a first frequency band (f1) and elements being operative in a second frequency band (f2). The antenna arrangement further comprises a second set of antenna elements, being arranged as a second intermediate column along a second symmetry axis, said second symmetry axis being parallel to said first and third symmetry axes, and being operative in said second frequency band (f2), wherein the ratio of said second center frequency (f2) to said first center frequency (f1) is in the range 1.5 to 3. The distance between said first and third symmetry axes is less than or equal to 0.6 times the wavelength of said first center frequency (f1), and the distance between said second and said first and third symmetry axis, respectively, is less than or equal to 0.6 times the wavelength of said second center frequency (f2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.