Hybrid antenna for portable radio communication devices
US9363794B1 · kind B1 · utility
4Cited by
56References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2014 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | Dec 15, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A hybrid antenna structure allows the antenna to be used internally or mostly internally in a portable radio communication device operating in the VHF range. The hybrid antenna structure includes a switching circuit that connects an RF circuit to one of several points along the length of a wrapped conductor element, depending on the selected operating frequency. An inductive matching tail element is adjustably tuned to match the selected tap point on the wrapped conductor for the selected operating frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.