Physics-based closed-form inductance expression for compact modeling of integrated spiral inductors

Jenei, S.; Nauwelaers, Bart; Decoutere, Stefaan

doi:10.1109/4.974547

Cited by 121 publications

(79 citation statements)

References 5 publications

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“…Nano-spiral inductor design for low power digital spintronic circuits is presented in [13]. The inductance of the spiral inductor is calculated using Greenhouse-based formulation is given in [14][15][16]. Other methods such as empirical formulation in calculation of the inductance of the spirals are outlined in [17].…”

Section: Introductionmentioning

confidence: 99%

Planar Inductor Design for High Power Applications

Eroğlu

2011

PIER B

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Abstract-Design, simulation, and implementation of low profile microstrip spiral inductors for high power Industrial, Scientific and Medical (ISM) applications at the high frequency (HF-3-30 MHz) range are given for the first time. An accurate analytical model and algorithm have been developed to determine the simplified lumped element equivalent model parameters for spiral inductor and its physical dimensions. Five different spiral inductors are then simulated with a planar electromagnetic simulator using the physical dimensions obtained for the desired inductance values with the analytical method. The implementation method and substrate selection for spiral inductors at the HF range are given in detail for high power applications. The spiral inductors are then constructed on 100 mil Alumina substrate and measured with network analyzer. It is found that analytical, simulation and measurement results are in close agreement and the analytical method and algorithm that have been developed can be used to accurately determine the physical dimensions, and the resonant frequency of the spiral inductor for the desired inductance value.

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Section: Introductionmentioning

confidence: 99%

Planar Inductor Design for High Power Applications

Eroğlu

2011

PIER B

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“…Our method has an average error of 2.5% with 99% of the cases having less than 6.0% error. When compared with the inductor designs simulated in FastHenry, the expressions in [9] and [7] have mean errors of 6.5% and 2.8% and with 99% of the cases having less than 10.5% and 15.0%, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…While not as accurate as field solvers, closed-form analytical models provide the speed necessary for initial design space exploration. Previously proposed closed-form modeling techniques for inductance either require technology specific fitted parameters [5], [6] or may not provide enough accuracy across the entire design space [7]- [9].…”

mentioning

confidence: 99%

Expression of Concern: Accurate Analytical Spiral Inductor Modeling Techniques for Efficient Design Space Exploration

Nieuwoudt

McCorquodale

Borno

et al. 2006

IEEE Electron Device Lett.

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Abstract-Efficient modeling techniques are required to accelerate design space exploration for integrated spiral inductors. In this letter, closed-form modeling techniques for the inductor's physical inductance and substrate eddy currents are introduced. The model provides several orders of magnitude performance improvement over field-solver-based approaches with typical errors of less than 4% while demonstrating excellent agreement with measured data from fabricated inductors.

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“…Capacitor C ox represents the capacitance between the spiral and the substrate. For the evaluation of the inductance, L S , several approaches have been proposed, based either on fitting processes to experimental values [7] or through physics-based equations [8], where…”

Section: Fig 1 Planar Inductor Lumped Element Models Complexity Vermentioning

confidence: 99%

Using Variable Width RF Integrated Inductors for Quality Factor Optimization

Almeida¹,

Pereira²,

Fino³

2013

IFIP Advances in Information and Communication Technology

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Abstract. The advancement of CMOS technology led to the integration of more complex functions. In the particular of wireless transceivers, integrated LC tanks are becoming popular both for VCOs and integrated filters [1]. For RF applications the main challenge is still the design of integrated inductors with the maximum quality factor. For that purpose, tapered, i.e., variable width inductors have been proposed in the literature. In this paper, analytical expressions for the determination the pi-model parameters, for the characterization of variable width integrated inductors are proposed. The expressions rely exclusively on geometrical and technological parameters, thus granting the rapid adaptation of the model to different technologies. The results obtained with the model are compared against simulation with ASITIC, showing errors below 10%. The model is then integrated into an optimization procedure where inductors with a quality factor improvement in the order of 20-30% are obtained, when compared with fixed width inductors.

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Physics-based closed-form inductance expression for compact modeling of integrated spiral inductors

Cited by 121 publications

References 5 publications

Planar Inductor Design for High Power Applications

Planar Inductor Design for High Power Applications

Expression of Concern: Accurate Analytical Spiral Inductor Modeling Techniques for Efficient Design Space Exploration

Using Variable Width RF Integrated Inductors for Quality Factor Optimization

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