US 12,231,046 B2
Radio frequency switch generator applicable to 1.8 V and 1.2 V power supplies
Yujiao Wang, Shanghai (CN); Jianling Guan, Shanghai (CN); Tingting Xie, Shanghai (CN); Dehang Zhou, Shanghai (CN); Wenhai Ni, Shanghai (CN); and Wenhua Xu Ni, Shanghai (CN)
Assigned to SHANGHAI CANAANTEK CO., LTD., Shanghai (CN)
Appl. No. 18/685,125
Filed by SHANGHAI CANAANTEK CO., LTD., Shanghai (CN)
PCT Filed Nov. 29, 2023, PCT No. PCT/CN2023/134887
§ 371(c)(1), (2) Date Feb. 20, 2024,
PCT Pub. No. WO2024/120265, PCT Pub. Date Jun. 13, 2024.
Claims priority of application No. 202211554397.X (CN), filed on Dec. 6, 2022.
Prior Publication US 2024/0266958 A1, Aug. 8, 2024
Int. Cl. H02M 3/158 (2006.01); G05F 1/46 (2006.01); G05F 3/26 (2006.01); H02M 3/07 (2006.01)
CPC H02M 3/158 (2013.01) [G05F 1/468 (2013.01); G05F 3/265 (2013.01); H02M 3/071 (2021.05)] 7 Claims
OG exemplary drawing
 
1. A radio frequency switch generator applicable to 1.8 V and 1.2 V power supplies comprises a bandgap reference circuit, a linear voltage regulator circuit, a boost circuit, a ring oscillator circuit and a negative voltage circuit;
wherein both the boost circuit and the ring oscillator circuit adopt an independent linear voltage stabilizing circuit as a power supply voltage source; square signals generated by the ring oscillator circuit are used as input signals of the boost circuit and the negative voltage circuit; and positive voltage is finally obtained after the boost circuit is subjected to double boosting twice, and negative voltage is finally obtained after the negative voltage circuit is subjected to three-level cascading;
wherein the bandgap reference circuit comprises a first triode device, a second triode device, an operational amplifier circuit, a current mirror, a first resistor, a second resistor, a third resistor and a fourth resistor; the current mirror comprises a first common-source transistor, a second common-source transistor, a third common-source transistor that are respectively connected with the input voltage of the power supply, a first common-gate transistor connected with the first common-source transistor, a second common-gate transistor connected with the second common-source transistor, and a third common-gate transistor connected with the third common-source transistor; an output signal terminal of the operational amplifier circuit is connected in between the first common-gate transistor and the second common-gate transistor; the second resistor is respectively connected in parallel to both terminals of a collector electrode and an emitter electrode of the second triode device, and the collector electrode is connected with a ground terminal, and the first resistor is connected to the emitter electrode of the second triode device; the fourth resistor is connected in parallel to both terminals of a collector electrode and an emitter electrode of the first triode device, and the collector electrode is connected to the ground terminal; a base electrode of the first triode device and a base electrode of the second triode device are connected and a lead wire is connected to the ground terminal; the first common-gate transistor, the collector electrode of the first triode device, the fourth resistor and a negative voltage terminal of the operational amplifier circuit are connected; the second common-gate transistor, the first resistor, the second resistor and a positive voltage terminal of the operational amplifier circuit are connected; one terminal of the third resistor is connected to the third common-gate transistor, and another terminal thereof is connected to the collector electrode of the second triode device and the second resistor, and is connected to the ground terminal; and
reference voltage is connected between the third common-gate transistor and the third resistor.