Built-in whip antenna for a portable radio device
US7154442B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2004 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Oct 11, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0421
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna assembly for a portable radio device/mobile station is provided. The assembly includes a retractable whip antenna 24, a first radio lead 50 for coupling the whip antenna to a mobile telephony receiver, and a second radio lead 48 for coupling the whip antenna 24 to a FM or DVB receiver. Each lead is coupled to the whip antenna at least when the whip antenna is fully extended. In one embodiment, received signals are frequency discriminated by a RF choke such as an inductor 52 along the second radio lead. In another embodiment, the first radio lead is coupled directly to a PIFA antenna 58 internal to the portable device, and the whip antenna is in parasitic communication 64 with the PIFA antenna at least when the whip antenna is extended and receiving signals above a threshold frequency. In that alternative embodiment, the whip antenna is preferably decoupled from ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.