公开(公告)号：US20160134240A1

公开(公告)日：2016-05-12

申请号：US14818882

申请日：2015-08-05

Applicant: Texas Instruments Incorporated

Inventor： Harish Kundur Subramaniyan ,  Eric Klumperink ,  Venkatesh Srinivasan ,  Ali Kiaei ,  Bram Nauta

IPC: H03F1/02 ,  H03F1/32 ,  H03F3/193 ,  H03F1/30

CPC classification number: H03F3/193 ,  H03F1/0261 ,  H03F1/301 ,  H03F1/308 ,  H03F1/3205 ,  H03F1/3217 ,  H03F3/3022 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2203/30078 ,  H03F2203/30111

Abstract: Third order distortion is reduced in a CMOS transconductor circuit that includes a first N-channel transistor and a first P-channel transistor, gates of the first N-channel transistor and the first P-channel transistor being coupled to receive an input signal. Drains of the first N-channel transistor and first P-channel transistor are coupled to an output conductor. A first degeneration resistor is coupled between a source of the first P-channel transistor and a first supply voltage and a second degeneration resistor is coupled between a source of the first N-channel transistor and a second supply voltage. A first low impedance bypass circuit is coupled between the sources of the first P-channel transistor and the first N-channel transistor. A low impedance bypass circuit re-circulates second order distortion current that is induced by second-order distortion in drain currents of the first P-channel transistor and the first N-channel transistor, through the first N-channel transistor and first P-channel transistor.

Abstract translation: 在包括第一N沟道晶体管和第一P沟道晶体管的CMOS跨导电路中，三阶失真减小，第一N沟道晶体管和第一P沟道晶体管的栅极被耦合以接收输入信号。 第一N沟道晶体管和第一P沟道晶体管的漏极耦合到输出导体。 第一退化电阻器耦合在第一P沟道晶体管的源极和第一电源电压之间，而第二退化电阻耦合在第一N沟道晶体管的源极和第二电源电压之间。 第一低阻抗旁路电路耦合在第一P沟道晶体管和第一N沟道晶体管的源极之间。 低阻抗旁路电路通过第一N沟道晶体管和第一P沟道重新流过在第一P沟道晶体管和第一N沟道晶体管的漏极电流中由二阶失真引起的二阶失真电流 晶体管。

公开(公告)号：US11947031B2

公开(公告)日：2024-04-02

申请号：US16680647

申请日：2019-11-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sreekiran Samala ,  Venkatesh Srinivasan ,  Vijaya B. Rentala

IPC: G01S7/03 ,  G01S7/35 ,  G01S13/931

CPC classification number: G01S7/03 ,  G01S7/352 ,  G01S7/358 ,  G01S13/931

Abstract: A radar transceiver includes a receiver. The receiver includes a low noise amplifier a mixer, a baseband filter, an integrator, and a phase shifter. The mixer includes an input coupled to an output of the low noise amplifier. The baseband filter includes an input coupled to an output of the mixer. The integrator includes an input coupled to an output of the baseband filter. The phase shifter includes a control input and an output. The control input is coupled to an output of the integrator.