Electronic device with shared antenna structures and balun
US9325080B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2014 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Jul 12, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/26
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An electronic device may be provided with shared antenna structures that can be used to form both a near-field-communications antenna such as a loop antenna and a non-near-field communications antenna such as an inverted-F antenna. The antenna structures may include conductive structures such as metal traces on printed circuits or other dielectric substrates, internal metal housing structures, or other conductive electronic device housing structures. A main resonating element arm may be separated from an antenna ground by an opening. A non-near-field communications antenna return path and antenna feed path may span the opening. A balun may have first and second electromagnetically coupled inductors. The second inductor may have terminals coupled across differential signal terminals in a near-field communications transceiver. The first inductor may form part of the near-field communications loop antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.