O'Reilly logo

Advanced Circuits for Emerging Technologies by Krzysztof Iniewski

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 17

On-Chip Spiral Inductors with Integrated Magnetic Materials

Wei Xu, Saurabh Sinha, Hao Wu, Tawab Dastagir, Yu Cao, and Hongbin Yu

Arizona State University, Tempe, AZ, USA

17.1 Introduction

17.1.1 Background

With an explosively growing market for system-on-a-chips (SOCs)-based integrated circuits, containing digital, analog, and radio frequency integrated circuits (RFICs), tremendous efforts are invested to meet the ever-challenging demands of design such as low cost, low supply voltage, low power consumption, low noise, high operational frequency, and low distortion [1], [2], [3], [4], [5]. These design requirements cannot be met satisfactorily in many cases without the use of on-chip inductors since their alternatives use active components, which are noisy and/or power hungry. On-chip inductors are found in many RF transceivers and are the essential components in low-noise amplifiers, power amplifiers, filters, LC tank voltage-controlled oscillators (VCOs), and other applications such as bandwidth extension circuits, clock drivers, and power distribution modules.

However, on-chip inductors have several drawbacks as compared to their alternatives. The semiconductor industry continuously benefits as IC technologies migrate into deep submicron regime by scaling device dimensions, on-chip passives such as inductors have been left behind. The planar spiral geometry is less efficient than a solenoid structure, and a typical spiral inductor occupies large amount of chip area ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required