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In this paper, an 8-channel low-power analog front-end amplifier (AFEA) with time-constant-enhanced topology is proposed for neural signal acquisition. The AFEA is composed of eight time-constant-enhanced amplifiers (TCEAs) and high-pass filters (HPFs), a multiplexed transconductor (MGM) and a transimpedance amplifier (TIA). The AFEA is designed and simulated in 65nm CMOS technology. The bandwidth...
In designing reliable power distribution networks (PDN) for power integrity (PI), it is essential to stabilize voltage supply to devices on chip. We usually employ decoupling capacitor (decap) to suppress the noise generated by the switching of devices. There have been numerous prior works on how to select/insert decaps in chip, package, or board to maintain PI, however optimal decap selection is...
In this paper, a new current-mode front-end amplifier for biopotential signal recording system is proposed. A current-mode preamplifier incorporates with an active feedback loop to bypass any dc current generated by tissues is designed as the first stage. A programmable gain stage and a current-mode filter are designed to adjust both gain and the low-pass cutoff frequency, respectively. The current-mode...
This paper aims to provide a theoretical procedure for defect type recognition of gearboxes and blades on wind turbine. Firstly, a test environment and pre-defect wind turbines were set up according to most usually happened defect types in wind turbine. The measurement of output current signals from these pre-defect wind turbines under operating is then operated for every defect type. Secondly, Hilbert-Huang...
In this paper an 8-channel CMOS general-purpose analog front-end (AFE) circuit with tunable gain and bandwidth for biopotential signal recording systems is presented. The proposed AFE consists of eight chopper stabilized pre-amplifiers, an 8-to-1 analog multiplexer, and a programmable gain amplifier. It can be used to sense and amplify different kinds of biopotential signals, such as electrocorticogram...
In this paper, a low noise and robust test scheme for 3D stacked integrated circuits based on modified standard IEEE 1149.4 has been proposed. Through the modified standard, this novel test scheme can be more robust to fulfill the microsystem integration requirements. This test scheme also makes the analog pins more observable and testable during and after the integration. The proposed test scheme...
In order to evaluate and improve the electromagnetic compatibility (EMC) of a variable frequency air conditioner, a time-domain methodology is advanced to analyze the conducted electromagnetic interference (EMI) caused by the three phase inverter-motor system in an actual air conditioner. The parasitic parameters of the EMI propagation path in the air conditioner are extracted using impedance measurement...
Making the use of the characteristics of accuracy using normalized cross-correlation image matching, this paper introduces normalized cross-correlation into the video processing, and proposes a moving object tracking method based on prediction-based Cross-correlation. First, we get the background of the video using adaptive on-line clustering method, and then get the foreground object of the video...
In today's VLSI designs, crosstalk effects causing chips to fail or suffer from low yields have become one of the very essential design issues. In this paper, we attempt to reduce crosstalk noise in logic and physical synthesis stage, which is usually done in post-layout stage. We propose a technology mapping method that can reduce the crosstalk noise while meeting delay constraints. The algorithm...
Support Vector Machine (SVM) is sensitive to noises and outliers. For reducing the effect of noises and outliers, we propose a novel SVM for suppressing error function. The error function is limited to the interval of. The separation hypersurface is simplified and the margin of hypersurface is widened. Experimental results show that our proposed method is able to simultaneously increase the classification...
In recent years, in order to handle various sources of noise (including substrate and power supply noises) and process variation in high-end mixed-signal circuit design, analog circuits are often required to be placed symmetrically to the common axis, and high noise digital circuits need to be placed far away from noise interference to the analog blocks. In this paper, we obtain the mixed-signal SoC...
Network forensics supports capabilities such as attacker identification and attack reconstruction, which complement traditional intrusion detection and perimeter defense techniques in building a robust security mechanism. Attacker identification pinpoints attack origin to deter future attackers and attack reconstruction can reveal attack causality and network vulnerabilities. In this paper, we study...
A complete extraction technique of SiGe HBTs is developed to extract the base and collector current noises and their correlation. Unlike conventional methods, a four-port noise de- embedding technique is used to remove the influence of extrinsic elements. From the extraction results, we found that the base current noise and collector current noise can not be modeled well using 2qIB and 2qlc, respectively...
In this paper, a computer application program to process electronic microscope images of plant pollen is presented. We use contrast enhancement to separate pure object pollen from original image. Hough edge detector is used to extract complete and inside-detail-kept edges from pure object image for recognition. Pre-process such as smoothing, grayscale equipoise, etc., is performed to remove noise...
In this paper, a neural network diagnosis system for 3-dimensional ultrasonography using Gabor filters to eliminate the speckle noise is introduced. Since the importance of the relationship between surface features and internal architecture of the breast tumor, we applied our system using three dimensional (3D) inter-pixel correlation instead of 2D features. Furthermore, Gabor filters provide a multi-resolution...
In recent years, as the density of the components in the integrated circuit grows, the distance between the on-chip wires becomes smaller. The crosstalk is more important and will change the signal waveform or generate logic failures and then degrade the performance and the reality of the circuit. In this paper, we focus on the value of the crosstalk noise. We find a new closed-form expression to...
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