公开(公告)号：US20230325034A1

公开(公告)日：2023-10-12

申请号：US18333936

申请日：2023-06-13

Applicant: SENSORTEK TECHNOLOGY CORP.

Inventor： CHIH-YU LIN

IPC: G06F3/041 ,  G06F3/046

CPC classification number: G06F3/04186 ,  G06F3/046

Abstract: A proximity sensor and a proximity sensing method are disclosed. The proximity sensor includes a sensing element and a sensing circuit. The sensing circuit is coupled to the sensing element and transmits a first driving signal and a second signal to the sensing element, respectively. The sensing element receives the first driving signal and the second driving signal, respectively, and generates a first sensing signal and a second sensing signal, respectively. The sensing circuit generates a proximity signal according to the first sensing signal and the second sensing signal. The accuracy of sensing the proximity of the human body whether near to the sensor is improved. In addition, the sensing circuit is further coupled to a radio-frequency circuit, and the sensing circuit transmits a driving signal or/and receives a sensing signal according to the state of the radio-frequency circuit, thereby reducing interference of the sensing circuit to the radio-frequency circuit.

公开(公告)号：US20220021408A1

公开(公告)日：2022-01-20

申请号：US17218625

申请日：2021-03-31

Applicant: SENSORTEK TECHNOLOGY CORP.

Inventor： YU-MENG YEN ,  CHIH-YU LIN

IPC: H04B1/3827 ,  H01Q1/24

Abstract: The present application provides a transmission structure of an antenna and a proximity sensing circuit. The transmission structure includes a transmission line and at least one radio-frequency short-circuit element, a first coupling end of the transmission line is coupled to an antenna, and a second coupling end of the transmission line is coupled to a proximity sensing circuit, and the at least one radio-frequency short-circuit element is coupled between the transmission line and a ground, and is located between the antenna and the proximity sensing circuit. Utilizing the at least one radio-frequency short-circuit element in conjunction with the transmission line so that the transmission path between the antenna and the proximity sensing circuit has the high impedance, and hence preventing a radio-frequency signal from the antenna from affecting the sensing accuracy of the proximity sensing circuit.