← 返回 JSSC 论文列表JSSC 2013第7期Analog Circuits180nm
Complementary Constant- Biasing of Nauta-Transconductors in Low-Power – Filters to ±2% Accuracy Over Temperature Richard J. E. Jansen , Member , IEEE, Johan Haanstra, and
设计了一种用于低功耗低频CMOS带通滤波器的Nauta跨导器静态互补恒偏置电路，优化并修调以实现工艺和温度无关的滤波器性能。
180nm CMOS, 2MHz带宽, 中心频率稳定, 120°C温度范围内偏差<2%
Nauta跨导器低功耗滤波器CMOS恒偏置工艺修调
▸创新点1：互补恒偏置电路设计（电路创新）：提出了一种精确且静态的互补恒偏置电路，用于Nauta跨导器，显著提高了低功耗低频CMOS带通滤波器的性能稳定性。
▸创新点2：工艺和温度无关的滤波器性能优化（系统创新）：通过优化和修调技术，实现了工艺和温度变化对滤波器性能的最小影响，确保了滤波器在宽温度范围内的稳定工作。
▸创新点3：单次修调覆盖宽温度范围（方法创新）：采用单次修调技术，使得滤波器在120°C的温度范围内，带宽和中心频率的偏差小于2%，大大简化了校准过程。
▸创新点4：低功耗设计（电路创新）：在180-nm CMOS工艺下实现了低功耗设计，适用于Zigbee接收器的信道选择阶段，满足了低功耗应用的需求。
Abstract
This paper describes the design of an accurate and static complementary constant- biasing circuit for Nauta’s transconductors in low-power low-frequency CMOS bandpass filters and their optimization and trimming for process and temperature independent filter performance. Experimental results are presented for a proto type third-orde r Butterworth bandpass filter in a 180-nm CMOS process with a 2-MHz band- width and center frequency. These filters are appropriate for the channel selection stage of a Zigbe e receiver and show with a single trim for process over a 120 C temperature range less than 2% deviation in the bandwidth and center frequency. Mismatch and process corner variation are dem onstrated to have only a minimal effect on this performance.