US 11,742,880 B2
Radio frequency switch system, radio frequency switch protective circuit, and protecting method thereof
Jongmo Lim, Suwon-si (KR); Wonsun Hwang, Suwon-si (KR); Byeonghak Jo, Suwon-si (KR); Yoosam Na, Suwon-si (KR); and Youngsik Hur, Suwon-si (KR)
Assigned to Samsung Electro-Mechanics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electro-Mechanics Co., Ltd., Suwon-si (KR)
Filed on Oct. 21, 2020, as Appl. No. 17/75,756.
Claims priority of application No. 10-2020-0096227 (KR), filed on Jul. 31, 2020.
Prior Publication US 2022/0038119 A1, Feb. 3, 2022
Int. Cl. H04B 1/00 (2006.01); H04B 1/04 (2006.01); H04B 1/3888 (2015.01)
CPC H04B 1/006 (2013.01) [H04B 1/04 (2013.01); H04B 1/3888 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A radio frequency (RF) switch system comprising:
a first RF switch connected between a port configured to receive an RF signal and a ground; and
an RF switch protective circuit configured to, based on a turn-off voltage applied to the first RF switch to turn the first RF switch off, apply an impedance, having an impedance value that varies according to the turn-off voltage, to the port to cause the RF signal to bypass the first RF switch.