Publication

Design of ultra low-power RF oscillators based on the inversion coefficient methodology using BSIM6 model

Christian Enz, Anurag Mangla, Maria-Anna Chalkiadaki, Gabrielle Guitton
2016
Journal Articles

Abstract

This paper presents a fast and accurate way to design and optimize LC oscillators using the inversion coefficient (IC). This methodology consists of four steps: linear analysis, nonlinear analysis, phase noise analysis, and optimization using a figure of merit. For given amplitude of oscillation and frequency, we are able to determine all the design variables in order to get the best trade-off between current consumption and phase noise. This methodology is demonstrated through the design of Pierce and cross-coupled oscillators and has been verified with BSIM6 metal oxide semiconductor field effect transistor compact model using the parameters of a commercial advanced 40 nm complementary metal oxide semiconductor process.

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https://infoscience.epfl.ch/entities/publication/6df370dd-944e-4ea0-8ae0-dc9af478b1b6

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Christian Enz, Anurag Mangla, Maria-Anna Chalkiadaki, Gabrielle Guitton
2016
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/6df370dd-944e-4ea0-8ae0-dc9af478b1b6

About this result

Related concepts (10)

Phase noise

In signal processing, phase noise is the frequency-domain representation of random fluctuations in the phase of a waveform, corresponding to time-domain deviations from perfect periodicity (jitter). Generally speaking, radio-frequency engineers speak of the phase noise of an oscillator, whereas digital-system engineers work with the jitter of a clock. Historically there have been two conflicting yet widely used definitions for phase noise.

Additive white Gaussian noise

Additive white Gaussian noise (AWGN) is a basic noise model used in information theory to mimic the effect of many random processes that occur in nature. The modifiers denote specific characteristics: Additive because it is added to any noise that might be intrinsic to the information system. White refers to the idea that it has uniform power spectral density across the frequency band for the information system. It is an analogy to the color white which may be realized by uniform emissions at all frequencies in the visible spectrum.

Noise figure

Noise figure (NF) and noise factor (F) are figures of merit that indicate degradation of the signal-to-noise ratio (SNR) that is caused by components in a signal chain. These figures of merit are used to evaluate the performance of an amplifier or a radio receiver, with lower values indicating better performance. The noise factor is defined as the ratio of the output noise power of a device to the portion thereof attributable to thermal noise in the input termination at standard noise temperature T0 (usually 290 K).

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