Multiband monopole antenna built into decorative trim of a mobile device
US9112266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2012 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Dec 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multiband monopole antenna for a mobile device is disclosed that can be dynamically switched between a quarter-wave monopole antenna and a half-wave folded monopole antenna. In one embodiment, a radiator element can be built into at least part of a decorative trim on an outer casing of the mobile device. A circuit element embedded into the radiator element can electrically connect or disconnect a radiator element tip from a grounded portion of the decorative trim. In some embodiments, the circuit element can be a switch or a passive filter element, such as an inductor/capacitive-based filter. In other embodiments, the circuit element can be a tunable filter circuit whose impedance can be dynamically changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.