We present a new approach to parameter estimation problems based on binary measurements, motivated by the need add integrated low-cost self-test features microfabricated devices. This is use of original weighted least-squares criteria: as opposed other existing methods, it requires no dithering signal and does not rely an approximation quantizer. In this technical note, we focus simple choice for weights establish some asymptotical properties corresponding criterion. To achieve this,...

The potential benefits of oscillator synchronization are receiving increased interest in the resonant MEMS community, for clocking or sensing applications. In this paper, we explore possibilities differential applications based on phase-difference between two injection-locked resonators, strongly coupled through an electronic mixer. A general model such oscillators is established, and their static dynamic performance determined. design space offered by mixing scheme then investigated at...

In this paper, we investigate how additive noise, e.g., thermomechanical impacts the resolution of mode-localized resonant sensing architectures based on two passively coupled linear resonators. Existing work suggests that ultimate these sensors can be improved by decreasing coupling coefficient The present gives an analytical proof result does not hold, and such is actually independent strength. These results are established for different output metrics operating points, in closed loop open...

An online approach to parameter estimation problems based on binary observations is presented in this paper. This recursive identification method relies a least-mean squares which makes it possible estimate the coefficients of finite-impulse response system knowing only input and sign output. The impulse identified up positive multiplicative constant. role regulative coefficient investigated thanks simulated data. proposed compared with another approach: shown that competitive other one...

This paper analyses the stability of synchronized state in Cartesian networks identical all-digital phase-locked loops (ADPLLs) for clock distribution applications. Such consist grids digitally-controlled oscillator nodes, where each node communicates only with its nearest neighbors. Under certain conditions, we show that whole network may synchronize both phase and frequency. A key aspect this study lies fact that, absence an absolute reference clock, loop-filter ADPLL is operated on...

This paper deals with the influence of shape driving waveform on frequency responses microelectromechanical systems (MEMS) resonators under nonlinear actuation. Our models show that, at large oscillation amplitudes, these are strongly dependent actuation so that response is not system signature, but signature a specific waveform. The case MEMS resonator electrostatically driven sine-, pulsed-, or square-wave voltage specifically addressed. and simulations, supported by experimental evidence,...

Because of its moderate cost in terms electronics, resonant sensing has become commonplace the context MEMS and NEMS devices. It is usual to drive such resonators below critical open-loop Duffing amplitude, above which oscillations unstable. However, when scaling sensors down NEMS, nonlinearities may occur at very low amplitudes, making difficult detect. This paper describes a general way compute amplitude operation for beam resonators, before it focuses on closed-loop Duffing-type...

In the field of resonant nano-electro-mechanical system (NEMS) design, it is a common misconception that large-amplitude motion, and thus large signal-to-noise ratio, can only be achieved at risk oscillator instability. present paper, we show very simple closed-loop control schemes used to achieve stable motion structure even when jump resonance (caused by electrostatic softening or Duffing hardening) in its frequency response. We focus on case accelerometer sensing cell, consisting...

In this paper, we investigate how additive noise, e.g. thermomechanical impacts the resolution of mode-localized resonant sensing architectures based on two weakly-coupled resonators. Existing work suggests that these sensors can be improved by decreasing coupling coefficient The present gives an analytical proof result does not hold when ratio motional amplitudes resonators is used as output metric, and that, in case, sensor actually independent strength. We then extend our proof, supported...

This paper describes a predictive and complete numeric model of multi-mass impact-coupled MEMS electrostatic kinetic energy harvester (e-KEH). A silicon resonator is coupled with elastic beams (acting as part stoppers) miniature metallic ball. The considers all these impacts well the electromechanical force catches frequency-up spring-softening effects. More importantly, for first time, it models accurately evolving non-linear squeeze-film air damping effect in gap-closing transducer, which...

Electrostatic, Casimir, or squeeze-film damping forces are some of the many inverse power-law that may affect micromachined devices. The behavior structures subject to such forces, even simple ones as clamped-clamped cantilever beams, is difficult model in a way both computationally efficient and physically meaningful. main contribution this paper semianalytical modeling approach for microbeams force densities, which accurate, efficient, amenable physical interpretation. This based on...

This paper describes a strongly-coupled resonant architecture in which two M/NEMS resonators are synchronized through their actuation voltage. In the context of sensing application, this theoretically enables environmental drift rejection (e.g. temperature, humidity) and ultra-sensitive measurement by monitoring phase difference rather than frequency. Experiments prove efficiency proposed scheme, with respect to temperature-drift sensitivity mismatch.

The advent of the Internet-of-Things brings new challenges in circuit design. presence circuits and sensors harsh environments brought need for methodologies that account them. Since beginning transistors, temperature is known having a significant impact on performance, even though very low sensitivity have been proposed, no general methodology designing them exists. This paper proposes gm over Id technique temperature-aware can be used either measurement data, analytically, or based...

In this paper, a VHDL model of second-order all-digital phase-locked loop (ADPLL) based on bang-bang phase detectors is presented. The developed ADPLL destined to be part distributed clock generators networks the ADPLL. paper presents an original and architecture digital multi-bit phase-frequency detector (PFD), describes in details modeling metastability issues related with asynchronous operation PFD. This particular PHD required by synchronised network context generator. whole have been...

The convergence analysis of an online system identification method based on binary-quantized observations is presented in this paper. This recursive algorithm can be applied the case finite impulse response (FIR) systems and exhibits low computational complexity as well storage requirement. method, whose practical requirement a simple 1-bit quantizer, implies power consumption minimal silicon area, consequently well-adapted to test microfabricated devices. mean studied presence measurement...

This theoretical work investigates the properties of nonlinearly operated weakly coupled resonators (WCRs) for resonant sensing applications. We propose an analysis framework mutually injection-locked oscillators (MILOs) and mode-localized (MOLOs), subject to nonlinear restoring damping forces. Under some simplifying assumptions, three sensor architectures are investigated compared, highlighting several common features, such as: 1) insensitivity amplitude ratio output metric A-f effect 2)...