RF Microelectronics

Chapter 7. Passive Devices

An important factor in the success of today’s RF integrated circuits has been the ability to incorporate numerous on-chip passive devices, thus reducing the number of off-chip components. Of course, some integrated passive devices, especially in CMOS technology, exhibit a lower quality than their external counterparts. But, as seen throughout this book, we now routinely use hundreds of such devices in RF transceiver design—an impractical paradigm if they were placed off-chip.

This chapter deals with the analysis and design of integrated inductors, transformers, varactors, and constant capacitors. The outline of the chapter is shown below.

7.1 General Considerations

While analog integrated circuits commonly employ resistors ...