Radiotelephones with integrated matching antenna systems
US6016431A · kind A · utility
4Cited by
10References
40Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1997 |
| Grant date | Jan 18, 2000 |
| Priority date | — |
| Expiry date | Apr 29, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q11/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Radiotelephones configured with integrated matching circuit components in the housing and antenna are disclosed. The present invention configures the antenna and the associated housing receiving passage to define a capacitor and inductor to match the differing impedances generated by retractable top load antennas (retracted and extended impedances) without requiring a separate switching circuit and wiping contacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.