Low specific absorption rate (SAR) dual-band antenna structure
US9973232B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2014 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Mar 20, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/243
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Dual-band antenna structures and methods of operating the same of an electronic device are described. One apparatus includes a radio frequency (RF) feed and a dual-band antenna structure coupled to the RF feed at a feeding point and coupled to a ground plane at a grounding point. The structure includes a first loop antenna and a second loop antenna, both coupled to the feeding point and the grounding point. The first loop antenna radiates electromagnetic energy in a first resonant mode in a first frequency band and the second loop antenna radiates electromagnetic energy in a second resonant mode in a second frequency band and radiates electromagnetic energy in a third resonant mode in the first frequency band. Surface currents create three or more hot spots of magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.