In this paper, a novel complementary metal-oxide semiconductor (CMOS) transistors based first-order voltage-mode all-pass filter is proposed. The filter circuit employs six metal-oxide semiconductor (MOS) transistors and minimal number of passive components, i.e., a resistor and a capacitor. The core of the proposed filter is a CMOS inverting amplifier with unity gain. The proposed circuit exhibits some attractive features such as compact design, high input impedance and ability to provide non-inverting and inverting all-pass responses simultaneously. Additionally, it does not require any kind of passive element matching constraints. Furthermore, by replacing the passive resistor with an active negative channel metal-oxide semiconductor (NMOS) transistor, the proposed filter is enriched with the much-desired feature of tunability. The theoretical behavior is tested and demonstrated by carrying SPICE simulations using TSMC 0.18$$$\mu$m level-7 CMOS process parameters.

在本文中，提出了一种基于互补金属氧化物半导体 (CMOS) 晶体管的新型一阶电压模式全通滤波器。滤波电路采用六个金属氧化物半导体（MOS）晶体管和最少数量的无源元件，即一个电阻器和一个电容器。所提出的滤波器的核心是具有单位增益的 CMOS 反相放大器。所提出的电路具有一些吸引人的特性，例如紧凑的设计、高输入阻抗以及同时提供非反相和反相全通响应的能力。此外，它不需要任何类型的无源元件匹配约束。此外，通过用有源负沟道金属氧化物半导体 (NMOS) 晶体管代替无源电阻器，所提出的滤波器具有非常理想的可调特性。$$$\mu$m level-7 CMOS工艺参数。