@article {4155051, title = {Transformer-Based Dual-Mode Voltage-Controlled Oscillators}, journal = {IEEE Transactions on Circuits and Systems II: Express Briefs}, volume = {54}, number = {4}, year = {2007}, pages = {293 -297}, keywords = {0.13 micron, 1 to 8 mW, 2.5D electromagnetic simulation, 3.6 to 7.8 GHz, Agilent Momentum, CMOS digital integrated circuits, digital CMOS technology, dual-mode voltage-controlled oscillators, frequency tuning techniques, microwave oscillators, MMIC oscillators, one-port network, quality factor, reconfigurable architectures, resonators, transformer-based resonator, transformers, two-port network, VCO, voltage-controlled oscillators, wide-band voltage-controlled oscillator}, issn = {1549-7747}, doi = {10.1109/TCSII.2006.889734}, author = {Bevilacqua, A. and Pavan, F.P. and Sandner, C. and Gerosa, A. and Neviani, A.} }