Ultrasonic proximity sensing for SAR mitigation
US11031966B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2019 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Apr 22, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The disclosed technology provides a computing device with a slot antenna assembly including a slot formed in a metal exterior surface of a computing device case; an acoustic transceiver positioned to transmit an acoustic wave out through the slot and to receive a reflected portion of the acoustic wave in through the slot when the acoustic wave is reflected by an object; a proximity detector coupled to the acoustic transceiver that determines a physical separation between the object and the slot antenna based on a temporal separation between transmission of the acoustic wave and receipt of the reflected portion of the acoustic wave; and a transmission power controller that adjusts transmission power of the slot antenna based on the determined physical separation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.