This paper discusses the design, modeling and characterization of RF inductors and baluns in a multilayer organic substrate. In the first part of the paper, we systematically look at two types of spiral inductors for RF applications. More than 40 multi-turn spiral inductors covering inductance values from a few nH to 20 nH have been fabricated and fully characterized. Single turn inductors suitable for high-frequency applications with inductance values in the sub-nH range have also been fabricated and evaluated. In the second part of the paper, we discuss the design of a Marchand-type balun for 2.4 GHz Bluetooth and WLAN application. This 50:100-Ohm balun design employs staggered trace arrangement which results in improved insertion loss and robust performance. Both measurement and simulation data are presented to validate the package-embedded components.

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