LC-tank CMOS Voltage-Controlled Oscillators using High Quality Inductors Embedded in Advanced Packaging Technologies
نویسندگان
چکیده
منابع مشابه
Large-Signal Analysis of MOS Varactors in CMOS Gm LC VCOs
MOS varactors are used extensively as tunable elements in the tank circuits of RF voltage-controlled oscillators (VCOs) based on submicrometer CMOS technologies. MOS varactor topologies include conventional D=S=B connected, inversion-mode (I-MOS), and accumulation-mode (A-MOS) structures. When incorporated into the VCO tank circuit, the large-signal swing of the VCO output oscillation modulates...
متن کاملAnalysis of Phase Noise Degradation Considering Switch Transistor Capacitances for CMOS Voltage Controlled Oscillators
In this paper we present a study on the design optimization of voltage-controlled oscillators. The phase noise of LC-type oscillators is basically limited by the quality factor of inductors. It has been experimentally shown that higher-Q inductors can be achieved at higher frequencies while the oscillation frequency is limited by parasitic capacitances. In this paper, the minimum transistor siz...
متن کاملDesign Issues in CMOS Differential LC Oscillators
An analysis of phase noise in differential crosscoupled inductance–capacitance (LC) oscillators is presented. The effect of tail current and tank power dissipation on the voltage amplitude is shown. Various noise sources in the complementary cross-coupled pair are identified, and their effect on phase noise is analyzed. The predictions are in good agreement with measurements over a large range ...
متن کاملA design approach for integrated CMOS LC-tank oscillators using bifurcation analysis
Electrical oscillators play a decisive role in integrated transceivers for wired and wireless communication systems. In this context the study of fully integrated differential VCOs has received attention. In this paper formulas for investigations of the stability as well as the amplitude of CMOS LC tank oscillators are derived, where an overall model of nonlinear gain elements is used. By means...
متن کاملCurrent State of Integrated Oscillator Design
Different methods to build integrated resonators and frequency tuning elements are reviewed. Two new figures of merit are defined and used to compare voltage-controlled oscillators (VCO) reported by various authors. It is shown that bipolar and CMOS VCOs can achieve similar performances. Introduction A large number of integrated resonator-based oscillators have been reported during the last few...
متن کامل