scholarly journals Development of Inverter Circuits with Dual Control Subchannel Areas of Integral CMOS Sensor Element

2021 ◽  
Vol 22 (4) ◽  
pp. 729-733
Author(s):  
A.A. Druzhinin ◽  
I.T. Kogut ◽  
V.I. Golota ◽  
S.I. Nichkalo ◽  
Y. M. Khoverko ◽  
...  
Keyword(s):  
Sensitive Element ◽  
Pulse Signal ◽  
Signal Amplitude ◽  
Output Pulse ◽  
Mos Transistors ◽  
Sensor Element ◽  
Integrated Sensor ◽  
Cmos Sensor ◽  
Control Options ◽  
Simulation Results

The use of an integrated sensor element as an addition of inverter, which converts the resistance of a sensitive element into the level of the output pulse signal, is investigated. Inverter circuits with different control options for sub-channel areas of MOS transistors are modeled in the LTSpice program. Based on the simulation results, dependencies graphs of the output signal amplitude on the resistance of a sensitive element and sensor’s sensitivity are drawn, and the shapes of the output signals are shown.

Experimental and Simulation Results of Magnetic Modulation of Gate Oxide Tunneling Current in Nanoscaled MOS Transistors

2015 ◽  
Vol 36 (4) ◽  
pp. 387-389 ◽  
Author(s):  
Gabriela A. Rodriguez-Ruiz ◽  
Edmundo A. Gutierrez-Dominguez ◽  
Arturo Sarmiento-Reyes ◽  
Zlatan Stanojevic ◽  
Hans Kosina ◽  
...  
Keyword(s):  
Tunneling Current ◽  
Gate Oxide ◽  
Mos Transistors ◽  
Simulation Results ◽  
Gate Oxide Tunneling

The Tapping Machine Mathematical Modeling Simulation Study

2013 ◽  
Vol 373-375 ◽  
pp. 2073-2077
Author(s):  
Bing Hua Jiang ◽  
Li Fang ◽  
Hang Biao Guo
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Blast Furnace ◽  
Rotation Speed ◽  
Pulse Signal ◽  
Structural Features ◽  
Machine Model ◽  
Modeling Simulation ◽  
Impact Attenuation ◽  
Simulation Results

Based on the tapping machines special structural features and practices, from both directions of rotation and impact established the tapping machine mechanism rotating borer and impact dynamic mathematical model, analysed the effect of different tapping machines parameters on the model itself, simulated the model with inputting wide pulse signal, the simulation results show that: firstly, the tapping machine model established in this paper is reasonable; secondly, increase the damping coefficient of the blast furnace, the tapping machines rotating borer rotation speed and impact attenuation speed decrease.

Vibration Isolation by Compliant Sensor Mounting Applied to a Coriolis Mass-Flow Meter

2014 ◽  
Author(s):  
L. (Bert) van de Ridder ◽  
Wouter B. J. Hakvoort ◽  
Johannes van Dijk
Keyword(s):  
Mass Flow ◽  
Flow Measurement ◽  
Vibration Isolation ◽  
Relative Displacement ◽  
Displacement Measurement ◽  
Sensor Element ◽  
Flow Meter ◽  
Displacement Sensors ◽  
Simulation Results ◽  
Coriolis Mass Flow Meter

In this paper a vibration isolated design of the Coriolis Mass-Flow Meter (CMFM) is proposed, by introducing a compliant connection between the casing and the tube displacement sensors with the intention to obtain a relative displacement measurement of the fluid conveying tube, dependent on the tube actuation and mass-flow, but independent of casing excitations. Analyses are focussed on changing the transfer function of support excitations to the relative displacement measurement. The influence of external vibrations on a compliant sensor element and the tube are made equal by tuning the resonance frequency and damping of the compliant sensor element and therefore the influence on the relative displacement measurement is minimised. Based on simulation results, a prototype is built and validated. The validated design show a 20dB reduction of the influence of external vibrations on the mass-flow measurement value of a CMFM, without affecting the sensitivity for mass-flow.

The Design of a MEMS Surface Resonant Magnetometer

2009 ◽  
Vol 60-61 ◽  
pp. 265-269
Author(s):  
Mu Zhi Hu ◽  
Zheng You ◽  
Jian Zhong Yang ◽  
Ling Qi Wu
Keyword(s):  
Mechanical Model ◽  
Sensitive Element ◽  
Simple Structure ◽  
Theoretical Calculations ◽  
High Sensitivity ◽  
Harmonic Excitation ◽  
First Order ◽  
Good Accordance ◽  
Simulation Results ◽  
The Magnetic Field

In this paper, a MEMS surface resonant magnetometer based on Lorentz force is presented. This magnetometer has three current carriers to sense the magnetic field and changes into deflection of beams which will be detected by the comb-capacitance. The alternating current carried by oscillate beams has the same frequency as resonant frequency of the magnetometer structure to make the deflection magnified Q (Quality-factor) times, therefore, it becomes more easily to measure. In this paper, the mechanical model of the sensitive element is established. The equations of stiffness of the system, deflection, first-order resonance frequency and sensitivity are setup and simulated in ANSYS, as well as second-order to fourth-order modal, and harmonic excitation response simulation. It can be seen that the simulation results are in good accordance with the theoretical calculations, which proves the feasibility and the rationality of the theoretical model. The dimensions of the structure are designed, as well as the processing sequence Anodic Silicon-Glass Bonding and Silicon DRIE Multi-user Bulk Micromachining Process which will be used to manufacture the magnetometer. The MEMS surface resonant magnetometer has a high sensitivity, simple structure and easy to manufacture. The prototype sensors are being manufactured in NEDI now.

scholarly journals A Novel Signal Scrambling Technique for PAPR Reduction in OFDM Systems

2019 ◽  
Vol 8 (9S) ◽  
pp. 767-770
Keyword(s):  
Performance Improvement ◽  
Average Power ◽  
Signal Amplitude ◽  
Ofdm Systems ◽  
Linear Region ◽  
Ofdm Signal ◽  
Efficient Performance ◽  
Data Rates ◽  
Modulation Type ◽  
Simulation Results

OFDM forms the basis of the upcoming next generation technologies so as to achieve higher data rates within a given bandwidth effectively. One of the major issues associated with OFDM is Peak to Average Power Ratio (PAPR) which needs to be minimized to get an efficient performance. The random variation in the signal amplitude of the OFDM signal leads to additional interference in the system and hence affecting the performance of HPA in non-linear region. In this paper, we propose a technique for the reduction of PAPR in OFDM systems with some increased complexity which works for any modulation type and any number of subcarriers. The simulation results show performance improvement with respect to the existing signal scrambling techniques

scholarly journals Super-Resolution Electrochemical Impedance Imaging with a 100 × 100 CMOS Sensor Array

2021 ◽  
Author(s):  
Kangping Hu ◽  
Christopher E. Arcadia ◽  
Jacob K. Rosenstein
Keyword(s):  
Sensor Array ◽  
Electrochemical Impedance ◽  
Super Resolution ◽  
Integrated Sensor ◽  
New Approach ◽  
Impedance Imaging ◽  
Spatially Resolved ◽  
M 10 ◽  
Cmos Sensor ◽  
Mutual Capacitance

AbstractThis paper presents a 100 × 100 super-resolution integrated sensor array for microscale electrochemical impedance spectroscopy (EIS) imaging. The system is implemented in 180 nm CMOS with 10 μm × 10 μm pixels. Rather than treating each electrode independently, the sensor is designed to measure the mutual capacitance between programmable sets of pixels. Multiple spatially-resolved measurements can then be computationally combined to produce super-resolution impedance images. Experimental measurements of sub-cellular permittivity distributions within single algae cells demonstrate the potential of this new approach.

scholarly journals Step-Pulse Modulation of Gain-Switched Semiconductor Pulsed Laser

2019 ◽  
Vol 9 (3) ◽  
pp. 602 ◽  
Author(s):  
Bin Li ◽  
Changyan Sun ◽  
Yun Ling ◽  
Heng Zhou ◽  
Kun Qiu
Keyword(s):  
Semiconductor Laser ◽  
Peak Power ◽  
Short Pulse ◽  
Extinction Ratio ◽  
Pulse Signal ◽  
Single Pulse ◽  
Single Mode ◽  
Output Pulse ◽  
Time Domain Reflectometry ◽  
Pulse Modulation

To improve the peak power and extinction ratio and produce ultra-short pulses, a novel approach is presented in this paper offers a highly effective modulated method for a gain-switched semiconductor laser by using step-pulse signal modulation. For the purpose of single pulse output, then the effects on the output from the gain-switched semiconductor laser are studied by simulating single mode rate equation when changing the amplitude and width of the modulated signal. The results show that the proposed method can effectively accelerate the accumulation speed of the population inversion and we can acquire the output pulse with higher peak power and shorter width. Compared with the traditional rectangular wave modulation, this method is advantageous to obtain a high gain switching effect by increasing the second modulation current and reduce the pulse width to saturation at the best working point. It can be incorporated as a practical and cost-effective approach for many fields which need high extinction ratio short pulse, such as the optical time domain reflectometry.

Evolutionary Computation Based Sizing Technique of Nulling Resistor Compensation Based CMOS Two-Stage Op-Amp Circuit

2017 ◽  
Vol 26 (04) ◽  
pp. 1740021 ◽  
Author(s):  
Bishnu Prasad De ◽  
Kanchan Baran Maji ◽  
Rajib Kar ◽  
Durbadal Mandal ◽  
Sakti Prasad Ghoshal
Keyword(s):  
Genetic Algorithm ◽  
Evolutionary Computation ◽  
Power Dissipation ◽  
Premature Convergence ◽  
Mos Transistors ◽  
Two Stage ◽  
Design Constraints ◽  
Op Amp ◽  
Simulation Results

This article explores the comparative optimizing efficiency between two PSO variants, namely, Craziness based PSO (CRPSO) and PSO with an Aging Leader and Challengers (ALC-PSO) for the design of nulling resistor compensation based CMOS two-stage op-amp circuit. The concept of PSO is simple and it replicates the nature of bird flocking. As compared with Genetic algorithm (GA), PSO deals with less mathematical operators. Premature convergence and stagnation problem are the two major limitations of PSO technique. CRPSO and ALC-PSO techniques individually have eliminated the disadvantages of the PSO technique. In this article, CRPSO and ALC-PSO are individually employed to optimize the sizes of the MOS transistors to reduce the overall area taken by the circuit while satisfying the design constraints. The results obtained individually from CRPSO and ALC-PSO techniques are validated in SPICE environment. SPICE based simulation results justify that ALC-PSO is much better technique than CRPSO and other formerly reported methods for the design of the afore mentioned circuit in terms of the MOS area, gain and power dissipation etc.

Study on Quadratic Interpolation of Motion Control

2013 ◽  
Vol 389 ◽  
pp. 872-875
Author(s):  
Teng Han ◽  
Yu Jin Fan ◽  
Jian Ming Huai ◽  
Long Zhang Shen ◽  
Wei Da Wang
Keyword(s):  
Motion Control ◽  
Processing Speed ◽  
High Speed ◽  
Pulse Signal ◽  
Output Pulse ◽  
Trajectory Data ◽  
Fast System ◽  
Quadratic Interpolation ◽  
System Trajectory ◽  
Different Types

In order to achieve demand for high speed, high precision, high real-time performance, high stability, its more essential to algorithms of motion control. In this paper, two different types of interpolation methods design are time-divided method and digital integral method. So control system trajectory data processing speed higher, output pulse signal response fast, system error small, transient response fast, and stability system.

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