IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
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An equivalent lumped circuit model for on-chip helical transformers
Wanghui ZouJin HuDiping ChenYun Zeng
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2018 Volume 15 Issue 3 Pages 20170818

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Abstract

This paper presents a compact equivalent lumped circuit model for on-chip helical transformers. From fundamental model, a simple coupled RL loop is added to account for the skin and proximity effect, and a series RLC branch is added to account for the parasitic coupling effects between inductors. Several helical transformers with various design configurations were fabricated using a standard 0.18 µm 1P6M CMOS process. It’s demonstrated that the proposed model shows good accuracy over two times self-resonance frequency, which is essential for the design of high-speed and radio-frequency circuit.

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© 2018 by The Institute of Electronics, Information and Communication Engineers
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