← 返回 JSSC 论文列表JSSC 2006第2期Other0.18μm CMOS
A Monolithic CMOS 2368 30 MHz Transformer Based /81-Enhanced Series-C Coupled Resonator
提出一种基于变压器的CMOS谐振器带通滤波器，具有低插入损耗和平坦通带响应。
2368 MHz中心频率，60 MHz带宽，5.84 mA@1.5V
带通滤波器谐振器CMOS变压器负电阻补偿
▸创新点1：基于变压器的谐振器增强技术，通过变压器耦合提升谐振器品质因数，显著降低插入损耗，实现平坦的通带响应。
▸创新点2：频率依赖性负电阻补偿方案，针对频率依赖性电感损耗进行精确补偿，避免传统负电阻电路导致的通带失真问题。
▸创新点3：避免通带失真的交叉耦合负电阻电路，优化电路设计，确保滤波器在2368 MHz中心频率下保持60 MHz带宽的稳定性能。
▸创新点4：采用0.18μm CMOS工艺，滤波器在1.5V电压下仅消耗5.84mA电流，芯片面积仅为1.5mm×1.5mm，实现高效能和小尺寸。
Abstract
A three-pole 0.1 dB ripple Chebyshev series-C cou- pled resonator bandpass filter with transformer-based -enhance- ment is presented. This -enhancement technique compensates resonator loss and produces a flat passband response with low in- sertion loss. The compensation scheme uses frequency-dependent negative resistance to compensate frequency-dependent inductor losses, avoiding passband distortion, which is a problem with cross- coupled negative resistance circuits. Fabricated in 0.18 m CMOS, the measured filter center frequency is 2368 MHz with a 60 MHz (3 dB) bandwidth, including probe pad and connecting trace par- asitic losses. The filter draws 5.84 mA at 1.5 V , and the die area is 1.5 mm 1.5 mm.