一种新颖的有源电感,在不同频率下几乎同时保持恒定的L和峰值Q,并且Q可独立调谐

Yamei Xu, Wanrong Zhang, Hongyun Xie, D. Jin, W. Na, Yan Liang, Ziteng Cai
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引用次数: 0

摘要

提出了一种新型有源电感器(AI),它的电感值L和品质因子Q的峰值在不同频率下几乎保持不变,并且Q因子可以相对于电感值L进行独立调谐。在正、负互感器构件的反馈回路中,正互感器的外电压调谐端可以补偿电感随频率的变化。并对多调节级联结构电路和RC反馈网络两部分的外部电压进行联合调谐,以补偿Q值随频率的变化。此外,利用RC反馈网络中的可变电容在不影响电感值的情况下对Q因子进行调谐,从而实现了Q相对于电感值的独立调谐。基于台积电0.18ȝm CMOS工艺,采用先进设计系统(ADS)进行了验证。结果表明:在0.75GHz、1.85GHz、3.00GHz、4.10GHz频率下,新型人工智能的峰值Q值分别为999、1003、999和1001,峰值Q值变化仅为0.40%;同时,对应的电感值分别为316.0nH、310.2nH、309.6nH和303.1nH,电感值变化仅为4.17%。此外,Q因子可以在上述四个频率中的每一个频率上从610调谐到1500,而电感的变化可以忽略不计。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Novel Active Inductor with Almost Simultaneously Constant L and Peak Q at Different Frequencies and Independent Q Tunability
A novel Active Inductor (AI) is presented that its inductance values L and the peak values of quality factor Q can be kept almost constant at different frequencies, and the Q factor can be independently tuned with respect to the inductance value L. The external voltage tuning terminal of the positive transconductor in the feedback loop of positive and negative transconductors building block is configured to compensate for the variation of inductance with frequency. And the external voltages of two building blocks, namely the multi-regulated cascode structure circuit and RC feedback network are jointly tuned to compensate for the variation of Q value with frequency. In addition, the variable capacitance in the RC feedback network is employed to tune the Q factor without affecting the inductance value, thus the independent tuning of the Q with respect to the inductance value is realized. Based on TSMC 0.18ȝm CMOS process, the novel AI is verified by Advanced Design System (ADS). The results show that under the frequencies of 0.75GHz, 1.85GHz, 3.00GHz, 4.10GHz, the novel AI achieves the peak Q values of 999, 1003, 999 and 1001 respectively with the peak Q variation of only 0.40%. At the same time, the corresponding inductance values are 316.0nH, 310.2nH, 309.6nH and 303.1nH respectively with the inductance variation of only 4.17%. Moreover, the Q factor can be tuned from 610 to 1500 at each of the above four frequencies with negligible variation of inductance.
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