Structure of multi-frequency antenna for a mobile phone
US6337669B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2000 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Jul 24, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q5/357
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An improved structure of a multi-frequency antenna for a mobile phone, the antenna is placed in an inner insulation sleeve to position a coil in cooperation with a receiving seat and is provided with a contact piece connected with one end thereof to the lower portion of the receiving seat and exposed partially to the outside; an outer sleeve is adapted for slipping over the inner insulation sleeve having been assembled with internal members, to make one end of the coil abut against the inner top surface of the outer sleeve, and the bottom end of the coil abut against the surface of the receiving seat; the coil includes in its length a sparse coil section and a dense coil section, the coil forms a multi-frequency antenna together with the receiving seat and the contact piece. The present invention can render manufacturing of multi-frequency antennae fast and convenient under the condition of using the improvement in the known antenna structure and known processing procedure of assembling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.