Isolation between antennas using floating parasitic elements
US7525502B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2005 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Jun 20, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/243
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
This invention describes a method for improving isolation between the main antenna (e.g., a GSM antenna) and at least one further antenna (e.g., a BLUETOOTH/WLAN antenna, a diversity antenna, etc.) in an electronic communication device by a floating parasitic element placed between these two antennas for providing an isolation from electro-magnetically coupled currents between these two antennas in a ground plane, wherein the antennas are connected to the ground plane and the parasitic element is floating and electrically isolated from the ground plane. The advantages of the present invention include but are not limited to a more compact placement of antennas and a reduced cost and better reliability compared to an approach involving grounded parasitic elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.