Stretchable antenna for mobile phones
US6204818A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2000 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Feb 1, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/244
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A stretchable antenna for mobile phones including a fixed axle sleeve embedded in antecedent therein a fixed coil antenna, the axle sleeve forms requisite electric connection with the mobile phone on the body top of the latter, an antenna rod is freely moved to and fro in the axle sleeve and has on the top thereof an insulation end which is combined with a metallic end piece, a coil antenna is provided on the end piece, a metallic annular piece is provided beneath the metallic end piece; the shank of the antenna rod, the end piece, the annular piece and the coil antenna are enveloped with a coating by and positioned in injection molding, the bottom of the antenna rod connects a metallic sleeve; when the coil antenna is stretched, the end piece abuts on the annular piece to render the coil antenna to contact the antenna rod directly to form electric connection, when the antenna rod is retracted, extension of the antenna rod is limited by an abutting point to force the end piece to separate from the annular piece to eliminate coupling effect between the coil antenna and the fixed coil antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.