In this paper, a voltage mode all-pass filter design employing floating current sources (FCS) is proposed. The presented all-pass filter circuit contains two floating current sources, one grounded resistor and one floating capacitor. Furthermore, the PMOS transistors of the FCSs are replaced with dynamic threshold-voltage MOSFET (DTMOS) transistors. Due to the use of DTMOS transistors, power consumption and supply voltages of the filter circuit are reduced considerably, compared to the classical circuit. The gain and phase responses, input and output waves, the total harmonic distortion (THD) results, temperature performance, output noise voltage and Monte Carlo (MC) analyses of the all-pass filter are simulated. The simulation results of the proposed DTMOS based circuit are performed with the LTSPICE program using 0.18 μm TSMC CMOS process parameters.

本文提出了一种采用浮动电流源（FCS）的电压模式全通滤波器设计。提出的全通滤波器电路包含两个浮置电流源，一个接地电阻和一个浮置电容器。此外，FCS的PMOS晶体管被动态阈值电压MOSFET（DTMOS）晶体管取代。与传统电路相比，由于使用了DTMOS晶体管，滤波电路的功耗和供电电压大大降低。模拟了全通滤波器的增益和相位响应，输入和输出波，总谐波失真（THD）结果，温度性能，输出噪声电压和蒙特卡洛（MC）分析。所提出的基于DTMOS的电路的仿真结果是使用LTSPICE程序使用0进行的。