CPW high Q inductors on organic substrates

IEEE 10th Topical Meeting on Electrical Performance of Electronic Packaging (Cat. No. 01TH8565) Pub Date : 2001-10-29 DOI:10.1109/EPEP.2001.967622

S. Dalmia, Seock-Hee Lee, V. Sundaram, S. Min, M. Swaminathan, R. Tummala

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引用次数: 9

Abstract

The development of integrated passive components suitable for integration with printed wiring boards is relatively recent. This integration is required since in most mixed signal designs, off-passive components take up more real estate on the boards than the analog and digital signal processing units. Besides utilizing real estate on board, embedded passives on organic laminates significantly reduce cost and if optimized have less parasitics compared to discrete passive components. This paper discusses the design of high Q coplanar waveguide (CPW) planar inductors on laminates. The reason for choosing a CPW type layout is the ease in adding shunt elements and series elements compared to stripline and microstrip configurations. A max Q factor of 85 at 5.2 GHz was obtained for a 1.85 nH CPW type inductor. Several other inductors with similar performances were studied. The paper also presents a method to model the CPW type inductors. This approach allows designers to include metal-to-dielectric interface roughness, non-uniform signal line profiles and frequency dependent parameters such as the dielectric constant of materials.

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有机基板上的CPW高Q电感

适合与印刷线路板集成的集成无源元件的开发相对较晚。这种集成是必需的，因为在大多数混合信号设计中，非被动元件比模拟和数字信号处理单元在电路板上占用更多的空间。除了利用机载空间外，有机层压板上的嵌入式无源元件显著降低了成本，并且与离散无源元件相比，经过优化的无源元件具有更少的寄生性。本文讨论了层合板上高Q共面波导(CPW)平面电感器的设计。选择CPW型布局的原因是与带状线和微带配置相比，易于添加分流元件和串联元件。1.85 nH CPW型电感在5.2 GHz时最大Q因子为85。研究了其他几种具有类似性能的电感器。本文还提出了一种对CPW型电感进行建模的方法。这种方法允许设计人员考虑金属-介质界面粗糙度、非均匀信号线轮廓和频率相关参数，如材料的介电常数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE 10th Topical Meeting on Electrical Performance of Electronic Packaging (Cat. No. 01TH8565)

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