US 12,009,873 B2
Method of recognizing immersion and electronic device for performing the same
Hoyeon Kim, Suwon-si (KR); Jeongsik Kim, Suwon-si (KR); Eunsoo Park, Suwon-si (KR); Hyuntae Jung, Suwon-si (KR); and Jinwan An, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-do (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Dec. 21, 2022, as Appl. No. 18/085,582.
Application 18/085,582 is a continuation of application No. PCT/KR2022/017105, filed on Nov. 3, 2022.
Claims priority of application No. 10-2021-0155059 (KR), filed on Nov. 11, 2021; and application No. 10-2021-0169748 (KR), filed on Dec. 1, 2021.
Prior Publication US 2023/0147727 A1, May 11, 2023
Int. Cl. H04B 17/15 (2015.01); H04B 17/345 (2015.01); H04M 1/18 (2006.01)
CPC H04B 17/15 (2015.01) [H04B 17/345 (2015.01); H04M 1/18 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An electronic device comprising:
an antenna which transmits and receives a radio frequency (RF) signal;
an RF circuit which processes the RF signal; and
a control circuit which controls the RF circuit,
wherein the control circuit receives, from the RF circuit, a feedback signal, which is the RF signal to be provided back as feedback from the antenna to the RF circuit, determines an impedance of the antenna based on the feedback signal, determines whether a water immersion of the electronic device occurs based on the determined impedance, and performs a set operation once it is determined that the water immersion of the electronic device occurs,
wherein the control circuit receives, from the RF circuit, a first feedback signal, which is the RF signal input to the antenna to be provided back as feedback, and a second feedback signal, which is the input RF signal to be reflected by the antenna and provided back as feedback, determines a reflection coefficient based on a voltage of the first feedback signal and a voltage of the second feedback signal, and determines the impedance based on the reflection coefficient.