Radiofrequency-wave-transparent capacitive sensor pad
US9563316B2 · kind B2 · utility
4Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2014 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | May 6, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/94089
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A capacitive sensor pad is co-located with (e.g., overlapping) an RF transmitter without causing significant degradation to the performance of the antenna. In one implementation, tuning the resistance per square in the capacitive sensor pad can provide effective sensor pad range and performance while providing making the capacitive sensor pad sufficiently transparent to radiofrequency waves to provide excellent antenna efficiency, despite the co-location of the capacitive sensor pad and the antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.