Showing 2 results for Active Inductor
M. Rafei, M. R. Mosavi,
Volume 8, Issue 2 (6-2012)
Abstract
One of the most important features of the Active Inductors (AIs) is their input
equivalent resistance, namely series-loss resistance, which should be low enough to have a
high Quality Factor (QF). Most of the previous methods by this goal did not yield a high
enough QF. This paper presents a new method, namely applying an RC feedback, to cancel
series-loss resistance entirely. As the RC feedback cancels series-loss resistance, it
enhances the Self-Resonant Frequency (SRF) as well. The SRF of the AI has a range as
high as 0.25-12.5 GHz. Compared to the previous reports, the QF has been improved by
applying the RC feedback. The structure is such that the QF can be adjusted independent of
the SRF. For example, a very high quality factor of 13159 at the frequency of 6.6 GHz with
a 2.2 nH inductance is obtained, while noise voltage and power dissipation are less than 4.6
nV Hz and 4 mW, respectively. The AI is designed and simulated using 90 nm CMOS
process and 1.2 V power supply. To the best of authors’ knowledge, this is the first time an
RC feedback has been implemented to cancel series-loss resistance.
Arsen Ahmed, Hüseyin Demirel,
Volume 19, Issue 4 (12-2023)
Abstract
In the past twenty years, low-voltage and power design have gained attention in analog VLSI design, particularly for high-performance and portable integrated circuits (ICs). Because of the increasing density of large-scale integration, a single silicon A.S.I. chip could have thousands or even millions of transistors on it. A rise in integration levels led to the development of Fin-type Field Effect Transistor (FinFETs) technology. In this research, an improved circuit design for a floating active inductor (FAI) and quadrature sinusoidal oscillator (QSO) is implemented employing only two active filters, the Z-copy-Voltage Differential Transimpedance Amplifier (Zc-VDTA). The purpose of the FAI is to contain two Zc-VDTA and one resistor with a ground capacitor, and it is easy to integrate the parameters of the Zc-VDTA bias current (IB) through the adjustment of the circuit. In order to verify the dependability of the circuits designed using floating active inductance circuits, a Butterworth fourth-order low-pass filter was created via component replacement. All the simulations have been carried out on 7 nm using linear technology SPICE, and cadence virtuoso tool.
