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.