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The Design of CMOS Radio-Frequency Integrated Circuits, Second Edition by Thomas H. Lee

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CHAPTER THREEPASSIVE RLC NETWORKS

3.1 INTRODUCTION

One characteristic of RF circuits is the relatively large ratio of passive to active components. In stark contrast with digital VLSI circuits (or even with other analog circuits, such as op-amps), many of those passive components may be inductors or even transformers. This chapter hopes to convey some underlying intuition that is useful in the design of RLC networks. As we build up that intuition, we’ll begin to understand the many good reasons for the preponderance of RLC networks in RF circuits. Among the most compelling of these are that they can be used to match or otherwise modify impedances (important for efficient power transfer, for example), cancel transistor parasitics to provide high ...

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