US 12,191,836 B2
Bandpass filter, touch driver including the same, and method of bandpass filtering
Moon Jae Jeong, Hwaseong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Aug. 9, 2022, as Appl. No. 17/818,442.
Claims priority of application No. 10-2021-0140003 (KR), filed on Oct. 20, 2021.
Prior Publication US 2023/0121263 A1, Apr. 20, 2023
Int. Cl. H03H 7/12 (2006.01); G06F 3/041 (2006.01)
CPC H03H 7/12 (2013.01) [G06F 3/04182 (2019.05)] 21 Claims
OG exemplary drawing
 
1. A bandpass filter comprising:
a first input terminal and a second input terminal, the first input terminal configured to receive a first radio frequency signal having a first phase and the second input terminal configured to receive a second radio frequency signal having a second phase different from the first phase;
a first load resistor connected in series to the first input terminal;
a second load resistor connected in series to the second input terminal;
a first switching unit connected in series to the first load resistor and the second load resistor;
a capacitor unit connected in series to the first switching unit;
a second switching unit connected between the capacitor unit and a ground;
a first output terminal connected between the first switching unit and the first load resistor; and
a second output terminal connected between the first switching unit and the second load resistor.