公开(公告)号：US20250035807A1

公开(公告)日：2025-01-30

申请号：US18601103

申请日：2024-03-11

Applicant: SENSORTEK TECHNOLOGY CORP.

Inventor： Wang-An Lin ,  Chih-Yu Lin ,  Chih-Yu Joe Lin

IPC: G01V3/08

Abstract: The present application provides a proximity detection circuit and a proximity detection method with compensation. The proximity detection circuit comprises a detection circuit, a baseline processing circuit and a proximity sensing circuit. The detection circuit generates a detection data and a reference data. The proximity sensing circuit generates a proximity signal according to a proximity threshold, the detection data and a baseline data generated from the baseline processing circuit, and the proximity detection circuit and the proximity detection method compensate the baseline data or the proximity threshold according to the reference data. The condition of misjudgment may be avoided under the influence of environmental factors.

公开(公告)号：US11870477B2

公开(公告)日：2024-01-09

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

CPC classification number: H04B1/3838 ,  H01Q1/245

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.