Antenna isolation
US8120536B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 2009 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Mar 11, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/045
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A dual polarized antenna element having improved antenna isolation is disclosed by the present invention. The antenna element includes a first feeder for feeding the antenna element in a first polarization direction, and a second feeder for feeding the antenna element in a second polarization direction. According to the present invention, a compensation line is arranged between the first and the second feeders for compensating for an imbalance caused by an essentially capacitive coupling between the first and second feeders. The compensation line is connected to the first and second feeders in close proximity to a radiating part of said antenna element, and has a short electrical length θ and a high impedance relative to an impedance of the first and second feeders, respectively, thereby giving the compensation line an essentially inductive character.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.