| 发明名称 |
Material-discerning sensing by measurement of different points of impedance |
| 摘要 |
A material-discerning proximity sensor is arranged to include an antenna that is arranged to radiate a radio-frequency signal. A capacitive sensor is arranged to detect a change in capacitance of the capacitive sensor and to receive the radio-frequency signal. An electrical quantity sensor is arranged to detect a change of the received radio-frequency signal and a change of a radio-frequency signal at an output of the at least one band pass filter. |
| 申请公布号 |
US9599739(B2) |
申请公布日期 |
2017.03.21 |
| 申请号 |
US201414480838 |
申请日期 |
2014.09.09 |
| 申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
Leek Alan H.;Szmulewicz Damian M. |
| 分类号 |
H01Q1/24;H04B17/12;H04B5/00;G01R27/26;G01N27/00;G01V3/02 |
主分类号 |
H01Q1/24 |
| 代理机构 |
|
代理人 |
Pessetto John R.;Brill Charles A.;Cimino Frank D. |
| 主权项 |
1. A material-discerning proximity sensing device comprising:
an antenna that is arranged to radiate a radio-frequency signal; a capacitive sensor that is arranged to detect a change in capacitance of the capacitive sensor and that is arranged to receive the radio-frequency signal; an electrical quantity sensor that is arranged to detect a change of the received radio-frequency signal; and at least one band pass filter; wherein the electrical quantity sensor is arranged to detect a change in a radio-frequency signal at an output of the at least one band pass filter. |
| 地址 |
Dallas TX US |
