Antenna coupler for a portable radiotelephone
US5812094A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1996 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Apr 2, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A novel and improved antenna coupler useful in an adapter for a portable radiotelephone. In a first embodiment, a plurality of curved bands of metal are positioned on a ground plane, with at least one of the plurality of curved bands of metal being electrically isolated from the ground plane so as to couple RF signals to and from the antenna of a portable telephone. At least one ground pin is also mounted on the ground plane. When a portable radiotelephone is interfaced with the antenna coupler, the at least one ground pin makes electrical contact with assembly screws or an external ground pad of a battery charging port on the portable radiotelephone. In a second embodiment, a coupling pin makes direct contact with an component of the RF chain of the portable radiotelephone. In a third embodiment, a helical coupler surrounds the antenna of the portable radiotelephone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.