Electronic device
US10505263B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2017 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Oct 31, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/245
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
One embodiment provides an electronic device, comprising: an antenna structure comprising an antenna body and an antenna tuning circuit; an RF circuit coupled to the antenna structure via a first capacitor to transmit an RF signal through the antenna structure; a Specific Absorption Ratio (SAR) sensor coupled to the antenna structure via a first inductor to detect, through the antenna structure, a change of capacitance within a target range, wherein a second capacitor in the antenna tuning circuit is located within the target range; and a control circuit for outputting a control signal to the antenna tuning circuit to adjust the second capacitor in the antenna tuning circuit to match RF signals having different frequencies; wherein a power supply terminal of the control circuit is coupled to a constant voltage power source. Other aspects are described and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.