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Design of magnetic RF inductor in CMOS

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6 Author(s)
Zhan, Jing ; Tsinghua National Laboratory for Information Science and Technology, Institute of Microelectronics, Tsinghua University, Beijing 100084, China ; Ren, Tianling ; Yang, Chen ; Yang, Yi
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Traditional planar inductors in Radio Frequency (RF) Integrated Circuits (ICs) are plagued by large areas, low quality, and low frequencies. This paper describes a magnetic-based CMOS-compatible RF inductor. Magnetic-core inductors with various ferrite-filled structures, spiral structures, and magnetic material permeabilities were simulated to show that this inductor greatly improves the inductance by up to 97% and quality factor by 18.6% over a multi-GHz frequency range. The results indicate that the inductor is a very promising and viable solution to realize miniature, high quality, and high frequency on-chip inductors for high-end RF ICs.

Published in:

Tsinghua Science and Technology  (Volume:17 ,  Issue: 1 )

Date of Publication:

Feb. 2012

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