Huber, Alexander
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Huber, Alexander
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- PublikationAnalysis of switched-capacitor circuits using driving-point signal-flow graphs(Springer, 2018) Schmid, Hanspeter; Huber, Alexander [in: Analog Integrated Circuits and Signal Processing]This paper extends the driving-point signal-flow graphs to switched-capacitor (SC) circuits by introducing a new theoretical element: an auxiliary voltage source that transfers no charge. In contrast to existing SFG methods, our method has no restrictions as to what types of SC circuits can be analysed, it requires no equivalent circuits or tables, and it works with two-phase as well as multi-phase SC circuits of any complexity. Compared to charge-equation matrix methods, it requires more effort, but is better suited for hand analysis because it makes causal relationships visible. Three illustrative examples are given to show the efficiency of the method and present a few application hints: a voltage doubler, the standard SC integrator, and a four-phase circuit simulating an inductor.01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationA tutorial to switched-capacitor noise analysis by hand(Springer, 2016) Schmid, Hanspeter; Eichelberger, Lothar; Huber, Alexander [in: Analog Integrated Circuits and Signal Processing]The methods for switched-capacitor (SC) noise analysis published up to this date fall in two groups: one group contains methods suitable for analysis by hand that are not easily applicable to all SC circuits. The other group contains methods that are applicable to all SC circuits, but require matrix manipulations with a computer algebra tool. In this paper, we show a universally applicable hand-analysis method. The main reason why SC noise analysis is so difficult is that noise is sampled on many different capacitors, and when being sampled, its spectrum is aliased. The core idea of making analysis by hand possible is to use an intuitive rather than an algebraic method to derive the continuous-time noise spectra in the different phases. Our method combines charge-equation analysis for the discrete-time aspects with signal-flow-graph analysis for the continuous-time aspects of a circuit. We show in tutorial style how to apply it, and demonstrate that it is very useful for getting insight into SC circuits, deriving simplified expressions, and getting a good correspondence with behavioural simulations using SpectreRF.01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationThe 3 σ Fallacy: Measuring a Small Number of Samples(IEEE, 2014) Schmid, Hanspeter; Huber, Alexander [in: IEEE Microwave Magazine]01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationMeasuring a Small Number of Samples, and the 3σ Fallacy. Shedding Light on Confidence and Error Intervals(IEEE, 2014) Schmid, Hanspeter; Huber, Alexander [in: IEEE Solid-State Circuits Magazine]01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationSigma-Delta-Wandler: nicht lineare gemischt analog/digitale Filter(Swiss Professional Media, 2012) Schmid, Hanspeter; Huber, Alexander [in: Polyscope]01B - Beitrag in Magazin oder Zeitung
- PublikationSigma-Delta-Wandler und ihre Macken(Swiss Professional Media, 2012) Schmid, Hanspeter; Huber, Alexander [in: Polyscope]01B - Beitrag in Magazin oder Zeitung
- PublikationKreisverstärkung und Faustregeln(Swiss Professional Media, 2011) Schmid, Hanspeter; Huber, Alexander [in: Polyscope]01B - Beitrag in Magazin oder Zeitung
- PublikationDas Tor zum Hightech-Markt(Swiss Professional Media, 2011) Schmid, Hanspeter; Huber, Alexander [in: Polyscope]01B - Beitrag in Magazin oder Zeitung
- PublikationFeedback -- ganz einfach(Swiss Professional Media, 2011) Schmid, Hanspeter; Huber, Alexander [in: Polyscope]01B - Beitrag in Magazin oder Zeitung
- PublikationWie stelle ich meine Signale elektronisch dar?(Swiss Professional Media, 2011) Schmid, Hanspeter; Huber, Alexander [in: Polyscope]01B - Beitrag in Magazin oder Zeitung
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