## Abstract This Letter gives simple CAD formulas for the inductance calculation of a square spiral inductor on a grounded substrate, by duality and synthetic asymptote at low frequency. The average errors of the formulas are less than 2%. The formulas also give good physical insights to the layout
CAD formula for inductance calculation of double-level square spiral inductors
✍ Scribed by Wanchun Tang; Qi Cui; Puke Zhou; Jie Zhang
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 289 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
This article derives simple CAD inductance formula of double‐level spiral inductors by analytical moment method, synthetic asymptote, and the duality of inductance and capacitance LC = μ~0~ε~0~ of the transmission line theory. The main contribution of this article is the mutual inductance calculation of the upper and lower spirals. Compared with IE3D, commercial software by Zeland, the average error of inductance is generally less than 2% with maximum error of 5%. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2648–2651, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22807
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