, Volume 38, Issue 11, pp 3125-3132
Date: 28 Nov 2012

A New 0.25–12.5 GHz High Quality Factor Low-Power Active Inductor Using Local RC Feedback to Cancel Series-Loss Resistance

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In this paper, the analysis and design of a new active inductor (AI) with a very high quality factor (QF) in 90 nm CMOS technology and frequency range of 0.25–12.5 GHz are presented. Using local resistive-capacitive (RC) shunt feedback, the QF of this AI could be improved more than what has been achieved in previous reports. The proposed circuit structure allows independent adjustment of the QF and self-resonance frequency (SRF). A very high QF of 13,159 is obtained at the frequency of 6.6 GHz with a 2.2 nHinductance; while noise voltage and power dissipation are less than 4.6 nv/\({\sqrt{H\rm {z}}}\) and 4 mW, respectively. To the best of authors’ knowledge, this is the first time that an RC shunt feedback is used to cancel the series-loss resistance of an AI.