Title :
Switched Inductor With Wide Tuning Range and Small Inductance Step Sizes
Author :
Kossel, Marcel ; Morf, Thomas ; Buchmann, Peter ; Schmatz, Martin L. ; Menolfi, Christian ; Toifl, Thomas
Author_Institution :
IBM Zurich Res. Lab., Rusch- likon, Switzerland
Abstract :
A switched inductor based on mutual-inductance switching is proposed that aims at increasing the inductance tuning range as well as the number of inductance step sizes. This is achieved with additional coupling structures and switch constellations. Applied to a 32 nm LC oscillator, the proposed inductor coil enables a frequency tuning range of 100% (1.5 octaves) from 2.8-8.4 GHz with switchable inductance values between 220 and 600 pH.
Keywords :
circuit tuning; coils; inductance; inductors; oscillators; switching; LC oscillator; coupling structures; frequency 2.8 GHz to 8.4 GHz; inductor coil; mutual-inductance switching; switch constellations; switched inductor; wide tuning range; $LC$ oscillator; $Q$ factor; mutual-inductance switching; switched inductor; tuning range;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2009.2024842
