This work presents a novel 4th order current-mode and transresistance-mode low-pass filter based on MOSFET-C architecture. Proposed filter's cut-off frequency can be easily adjusted from 15 MHz up to 45 MHz for the analog baseband filters used in multi-standard receivers. The main core circuit of the filter contains only 7 transistors in order to reduce chip area and power consumption. Also, the proposed 4th order architecture have dual outputs in different modes facilitating signal conversion and different signal operations. The proposed structure has (54.3 μm × 34.1 μm) chip area and post layout simulations are examined extensively to prove performance of the filter. Also, input referred noise (IRN) characteristics of the filter outputs are shown in order to overcome thermal noise effects worsening the performance of the filter. Power consumption changes from 195.8 μW up to 1.37 mW whereas cut-off frequency is varied from 15 MHz up to 45 MHz. Provided results show that the proposed filter scheme brings a promising opportunity to designers for the analog baseband operations in multi-standard communication receivers.

这项工作提出了一种基于 MOSFET-C 架构的新型四阶电流模式和跨阻模式低通滤波器。对于多标准接收器中使用的模拟基带滤波器，建议滤波器的截止频率可以在 15 MHz 至 45 MHz 之间轻松调整。滤波器的主要核心电路仅包含7个晶体管，以减少芯片面积和功耗。此外，所提出的四阶架构在不同模式下具有双输出，便于信号转换和不同的信号操作。建议的结构具有 (54.3 μm × 34.1 μm) 芯片面积和布局后模拟被广泛检查以证明滤波器的性能。此外，还显示了滤波器输出的输入参考噪声 (IRN) 特性，以克服使滤波器性能恶化的热噪声效应。功耗从 195.8 μW 变化到 1.37 mW，而截止频率从 15 MHz 变化到 45 MHz。提供的结果表明，所提出的滤波器方案为设计人员在多标准通信接收器中的模拟基带操作带来了有希望的机会。