公开(公告)号：US20240120937A1

公开(公告)日：2024-04-11

申请号：US18276977

申请日：2021-04-23

Applicant: SHENZHEN CVA INNOVATION CO., LTD.

Inventor： Shuo FAN ,  Songrong BAI ,  Jie WANG

IPC: H03M1/46

CPC classification number: H03M1/466

Abstract: A successive approximation register digital analog-to-digital converter, and an electronic device. The successive approximation register digital analog-to-digital converter comprises a positive capacitor array, a negative capacitor array, a switching circuit, a comparator and an SAR logic circuit, wherein the SAR logic circuit is configured to control the reference voltages to which the plurality of first capactiros are connected through the plurality of second capacitors are connected through the plurality of groups of second bottom plate switches according to each bit of digital signal outputted by the comparator.

公开(公告)号：US20240349200A1

公开(公告)日：2024-10-17

申请号：US18134299

申请日：2023-04-13

Applicant: Shenzhen CVA Innovation Co., Ltd

Inventor： Songrong BAI ,  Shuo FAN ,  Jie WANG

IPC: H04W52/28 ,  G01V3/08

CPC classification number: H04W52/283 ,  G01V3/088

Abstract: The disclosure relates to an antenna self-capacitance change detection method and apparatus, and related applications. The method includes: acquiring a total self-capacitance change of the antenna and a total self-capacitance change of the sensor electrode respectively; determining a first self-capacitance change of the antenna caused by a temperature change according to the total self-capacitance change of the sensor electrode and a preset self-capacitance change proportional coefficient; and determining a difference value between the total self-capacitance change and the first self-capacitance change of the antenna as a second self-capacitance change of the antenna caused by proximity of an object. The antenna self-capacitance change detection method can accurately determine the antenna self-capacitance change caused by the proximity of the object, to accurately determine whether there is an object approaching, thereby better controlling and adjusting the antenna transmitting power.