In this paper, a novel parallel-coupled quadrature LC oscillator (PC-QO) is presented that can automatically eliminate imbalances of output phase and amplitude resulting from mismatches in the LC tanks. The method of using unequal coupling factors in a parallel-coupled quadrature oscillator is the ...
LC oscillator.We observe their influence on the oscillator phase noise,and we quantify the influence of their energy distribution in the semiconductor gap.Second,we give a behavioral model of an LC oscillator containing a SiGe HBT as an active device.The key goal is to study the susceptibility ...
Phase Noise in LC Oscillators 来自 IEEEXplore 喜欢 0 阅读量: 37 作者: KK And 摘要: Analytical methods for the phase-noise analysis of LC-tuned oscillators are presented. The fundamental assumption used in the theoretical model is that an oscillator acts as a large-signal LC-tuned amplifier ...
The fundamentai assumption used in the theoretical model is that an oscillator acts as a largesignal LC-tuned amplifier for purposes of noise analysis. This approach allows us to derive closed-form expressions for the close-to- carrier spectral density of the output noise, and to estimate the ...
The LC-oscillator is a resonant frequency circuit comprising an inductor, which is the origin of the “L” term, and a capacitor, which is the origin of the “C” term. In a quadrature phase-locked loop (PLL) circuit, two separate inductors are positioned close to each other, where the...
Like other LC QOs, the mismatches between LC tanks are the main source of phase error in this oscillator. The QO is analyzed where the phase error and oscillation frequency are derived in terms of circuit parameters. The proposed analysis shows that the output phase error is a function of ...
[2] Jo Y, Kim J, Shin Y, et al. A 135fsrms-jitter 0.6-to-7.7GHz LO generator using a single LC-VCO-based subsampling PLL and a ring-oscillator-based sub-integer-Nfrequency multiplier. IEEE International Solid-State Circuit Conference, 2023, 71 ...
The effect of supply voltage variations on an oscillator circuit output are compensated for to reduce supply pushing. The change in a value of a first capacitance in a first direction in response to the variation in the supply voltage is canceled using one or more diodes having a capacitance ...
This paper presents the IC design of a low power, wide tuning range and low phase noise voltage-controlled oscillator (VCO) in a standard 90-nm CMOS techno... ZHU LIZhIGONG WANGZHIQUN LIQIN LI - 《Wseas Transactions on Circuits & Systems》 被引量: 0发表: 2015年 An inductor-less LC-VCO...
a voltage-controlled oscillator (VCO) generating an adjustable frequency signal, a phase comparator comparing the frequency of the RPS with the reference frequency, and a control circuit that adjusts the operating conditions of the RPS to match the reference frequency. Furthermore, frequency locking ...