US 12,143,102 B2
Coupling-type single-pole double-throw switch adapted for radio frequency integrated circuit
Yonggang Mao, Xi'an (CN)
Assigned to XI'AN CREATION KEJI CO., LTD., Xi'an (CN)
Appl. No. 17/256,842
Filed by Xi'an Creation Keji CO., Ltd., Xi'an (CN)
PCT Filed Dec. 21, 2020, PCT No. PCT/CN2020/138114
§ 371(c)(1), (2) Date Dec. 29, 2020,
PCT Pub. No. WO2022/088445, PCT Pub. Date May 5, 2022.
Claims priority of application No. 202011197127.9 (CN), filed on Oct. 30, 2020.
Prior Publication US 2024/0259019 A1, Aug. 1, 2024
Int. Cl. H03K 17/693 (2006.01); H03K 17/51 (2006.01)
CPC H03K 17/693 (2013.01) [H03K 2017/515 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A coupling-type single-pole double-throw (SPDT) switch adapted for a radio frequency integrated circuit, comprising:
an input port, a first output port, a second output port, a multi-coupling-coil circuit, and a transistor-based control circuit;
wherein the multi-coupling-coil circuit comprises coils electrically connected with the input port, the first output port and the second output port respectively;
wherein the transistor-based control circuit comprises a first control circuit, a second control circuit and a third control circuit, and configured to control an input load of the multi-coupling-coil circuit by using a control level of the first control circuit and realize connections between the input port and the first output port as well as the second output port by using control levels of the third control circuit and the second control circuit respectively;
wherein the coupling-type SPDT switch further comprises: a control port, and inverters;
wherein the control port is electrically connected with the third control circuit and configured to provide the control level of the third control circuit;
wherein the inverters are respectively connected between the control port and the second control circuit, and between the control port and the first control circuit; and the inverters are configured to provide the control levels of the second control circuit and the first control circuit after reversing a phase with 180 degrees of the control level provided by the control port.