US 12,323,147 B2
Single-pole double-throw radio-frequency switch topology
Petri Ikonen, Kuhmalahti (FI)
Assigned to SAAB AB, Linköping (SE)
Appl. No. 18/256,953
Filed by SAAB AB, Linköping (SE)
PCT Filed Dec. 15, 2021, PCT No. PCT/SE2021/051258
§ 371(c)(1), (2) Date Jun. 12, 2023,
PCT Pub. No. WO2022/132010, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 20206317 (FI), filed on Dec. 16, 2020.
Prior Publication US 2024/0106417 A1, Mar. 28, 2024
Int. Cl. H03K 3/01 (2006.01); H03K 17/56 (2006.01)
CPC H03K 3/01 (2013.01) [H03K 17/56 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A single-pole double-throw (SPDT) radio-frequency; (RF) switch topology comprising:
a first port, a second port, and a third port;
a first switchable path arranged between the first port and the second port;
a second switchable path arranged between the first port and the third port;
wherein the first switchable path comprises at least one first switching stage and at least one second switching stage;
wherein the second switchable path comprises at least one first switching stage and at least one second switching stage;
wherein each first switching stage comprises a first impedance network having a line inductance element, and two shunt capacitors, each first switching stage further comprising at least one shunt PIN diode and a bias feed for applying a bias voltage to the at least one shunt PIN diode, wherein the two shunt capacitors of each first switching stage are grounded via the at least one shunt PIN diode;
wherein each second switching stage comprises a second impedance network having a line inductance element and a shunt capacitor, each second switching stage further comprising at least one shunt PIN diode and a bias feed for applying a bias voltage to the at least one shunt PIN diode, wherein the shunt capacitor of each second switching stage is grounded via the at least one shunt PIN diode; and
a control circuitry configured to:
control each bias feed of each first switching stage and each second switching stage so to selectively alternate the first and the second switchable paths between a first operating mode and a second operating mode.