Abstract
From the phase noise calculations in the previous chapter, clearly the best inductor for a low-noise oscillator is a passive inductor with a series resistance as low as possible. This is an obvious problem for fully integrated VCOs since the only type of passive inductor that is commonly used in ICs is the so-called planar inductor: a spiral metal trace is laid out in one or more of the standard available routing levels of the technology. But these inductors are more known for their parasitics than for their behavior as an inductor. They have a rather high series resistance, a low self-resonant frequency due to capacitive coupling to the substrate, and at high frequencies they suffer from resistive losses in the underlying silicon substrate. Optimization of these spiral or planar inductors for oscillator designs will be discussed in chapter 5.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 1998 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Craninckx, J., Steyaert, M. (1998). Bonding Wire Inductance VCOs. In: Wireless CMOS Frequency Synthesizer Design. The Springer International Series in Engineering and Computer Science, vol 439. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-2870-5_4
Download citation
DOI: https://doi.org/10.1007/978-1-4757-2870-5_4
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4419-5034-5
Online ISBN: 978-1-4757-2870-5
eBook Packages: Springer Book Archive