公开(公告)号：US09625507B2

公开(公告)日：2017-04-18

申请号：US14172158

申请日：2014-02-04

Applicant: Qualcomm Incorporated

Inventor： Ozan E. Erdogan ,  Guozhong Shen ,  Rajesh Ananthararman ,  Ajay Taparia ,  Behrooz Javid ,  Syed T. Mahmud

IPC: G06F3/044 ,  G01R27/26 ,  G06F3/041 ,  G01D5/24

CPC classification number: G01R27/2605 ,  G01D5/24 ,  G06F3/0416 ,  G06F3/044

Abstract: A system includes a signal generator and a correlator. The signal generator outputs a first signal to a first end of a capacitance to be measured. The correlator is connected to an output of the signal generator that outputs the first signal and to a second end of the capacitance. The correlator receives the first signal from the output of the signal generator and receives a second signal from the second end of the capacitance. The correlator correlates the first signal and the second signal and generates an output signal based on a correlation between the first signal and the second signal. The output signal is proportional to a capacitance value of the capacitance.