REALIZATION OF SQUARE ROOT DOMAIN TOW–THOMAS BIQUADRATIC FILTER

2010 ◽  
Vol 19 (05) ◽  
pp. 1015-1024
Author(s):  
SİNEM ÖLMEZ ◽  
UĞUR ÇAM
Keyword(s):  
State Space ◽  
Supply Voltage ◽  
Synthesis Method ◽  
Model Parameters ◽  
Square Root ◽  
Spice Simulation ◽  
Biquadratic Filter ◽  
Simulation Results ◽  
Theoretical Results ◽  
Good Agreement

In this paper, a Tow–Thomas biquadratic filter designed in square root domain is proposed. The presented filter is constructed with a lossy integrator, a lossless integrator, and a summer block. To the best knowledge of the authors, the filter is the first square root domain Tow–Thomas filter in the literature. The state space synthesis method is used to design the biquadratic filter. The filter operated at 2.5 V supply voltage is simulated by using SPICE simulation program with 0.25 μm TSMC CMOS model parameters. Simulation results are in good agreement with theoretical results that the cut-off frequency and quality factor of the filter are tunable electronically.

Computation of Madalines' Sensitivity to Input and Weight Perturbations

2006 ◽  
Vol 18 (11) ◽  
pp. 2854-2877 ◽  
Author(s):  
Yingfeng Wang ◽  
Xiaoqin Zeng ◽  
Daniel So Yeung ◽  
Zhihang Peng
Keyword(s):  
Probability Theory ◽  
Computer Simulations ◽  
Structural Characteristics ◽  
Analytical Formula ◽  
Single Neurons ◽  
Important Measure ◽  
Simulation Results ◽  
Theoretical Results ◽  
Good Agreement

The sensitivity of a neural network's output to its input and weight perturbations is an important measure for evaluating the network's performance. In this letter, we propose an approach to quantify the sensitivity of Madalines. The sensitivity is defined as the probability of output deviation due to input and weight perturbations with respect to overall input patterns. Based on the structural characteristics of Madalines, a bottomup strategy is followed, along which the sensitivity of single neurons, that is, Adalines, is considered first and then the sensitivity of the entire Madaline network. Bymeans of probability theory, an analytical formula is derived for the calculation of Adalines' sensitivity, and an algorithm is designed for the computation of Madalines' sensitivity. Computer simulations are run to verify the effectiveness of the formula and algorithm. The simulation results are in good agreement with the theoretical results.

Improved Electronically-Tunable Current-Mode Square-Root-Domain First-Order Multifunction Filter

2021 ◽  
pp. 2150190
Author(s):  
Manoj Kumar Jain
Keyword(s):  
Transient Response ◽  
Current Mode ◽  
Square Root ◽  
Spice Simulation ◽  
First Order ◽  
Low Pass ◽  
Multifunction Filter ◽  
Simulation Results ◽  
Electronically Tunable ◽  
High Pass

Some time back, Kircay reported an electronically-tunable current-mode square-root-domain first-order filter capable of realizing low-pass (LP), high-pass (HP) and all-pass (AP) filter functions. When simulated in SPICE, Kircay’s circuit has been found to exhibit DC offsets in case of LP and AP responses and incorrect transient response in case of HP response. In this paper, an improved circuit overcoming these difficulties/deficiencies has been suggested and its workability of the improved circuit as well as its capability in meeting the intended objectives has been demonstrated by SPICE simulation results.

A Method of Detecting Measurement Uncertainty of Voltage Unbalance

2013 ◽  
Vol 805-806 ◽  
pp. 667-672
Author(s):  
Yan Zhu ◽  
Xue Liang Huang ◽  
Xin Fang
Keyword(s):  
Measurement Uncertainty ◽  
Power Quality ◽  
Supply Voltage ◽  
Quality Monitoring ◽  
Voltage Unbalance ◽  
Detection Process ◽  
Power Quality Monitoring ◽  
Simulation Results ◽  
And Control ◽  
Good Agreement

Power quality monitoring products are very popular to monitor and control the power quality in recent years. The uncertainty of voltage unbalance is an important parameter designed in these monitoring products. Some standards specify several sinusoidal waveforms to detect the uncertainty of voltage unbalance. But these waveforms seem not enough and some manufactures do not follow the standards to design the detection process. So this paper proposes a method of detecting the supply voltage unbalance accuracy and gives some detection waveforms for uncertainty of voltage unbalance. The simulation results show good agreement with the IEC standards.

Numerical Simulation of Machining Distortion of Residually Stressed Aircraft Aluminum Components

2006 ◽  
Vol 315-316 ◽  
pp. 235-238 ◽  
Author(s):  
Q.C. Wang ◽  
Xiao Dong Hu ◽  
W. Li ◽  
Ju Long Yuan
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Energy Density ◽  
Square Root ◽  
Stress Range ◽  
Key Factors ◽  
Machining Distortion ◽  
Simulation Results ◽  
Aluminum Component ◽  
Good Agreement

The presence of residual stress in aircraft aluminum components can give rise to distortion after machining. Excessive distortion may result in the rejection of a part or the need for costly and time-consuming rework prior to placement in service. The purpose of this research was to develop a methodology for the prediction of machining-induced distortions of residually stressed aircraft aluminum components. Numerical simulation results show that the magnitude of machining distortion is strongly related to the square root of Stain Energy Density W or Stress Range σ . The experimental results demonstrate good agreement with the predicted machining distortions of 7075T73 bulkheads. It included that the original residual stress in the blocks of aircraft aluminum component is one of key factors to cause machining distortion.

LARGE-SIGNAL ANALYSIS AND SIMULATION OF A ZVT BOOST CONVERTER

2004 ◽  
Vol 13 (03) ◽  
pp. 425-442
Author(s):  
RANGANATHAN GURUNATHAN ◽  
ASHOKA K. S. BHAT
Keyword(s):  
Signal Analysis ◽  
Input Voltage ◽  
Boost Converter ◽  
Soft Switching ◽  
Large Signal ◽  
Spice Simulation ◽  
Simulation Results ◽  
Zero Voltage ◽  
Theoretical Results ◽  
Auxiliary Circuit

Large-signal analysis of a zero-voltage transition (ZVT) boost converter is presented. The proposed ZVT converter uses an auxiliary circuit with two auxiliary switches both having ZVS. Analysis is used to study the converter behavior for step changes in input voltage and load using MATLAB. SPICE simulation results are presented to verify the theoretical results. It is shown that the main switch and auxiliary switches of the proposed converter maintains soft-switching for large-signal transients.

scholarly journals Theoretical and experimental determination of mass attenuation coefficients of lead-based ceramics and their comparison with simulation

2016 ◽  
Vol 31 (2) ◽  
pp. 142-149 ◽  
Author(s):  
Alireza Vejdani-Noghreiyan ◽  
Elham Aliakbari ◽  
Atiyeh Ebrahimi-Khankook ◽  
Mahdi Ghasemifard
Keyword(s):  
Gamma Ray ◽  
Mass Attenuation Coefficient ◽  
X Ray Diffraction ◽  
Attenuation Coefficients ◽  
X Ray ◽  
Simulation Results ◽  
Theoretical Results ◽  
Good Agreement ◽  
Mass Attenuation

Mass attenuation coefficient of lead-based ceramics have been measured by experimental methods and compared with theoretical and Monte Carlo simulation results. Lead-based ceramics were prepared using mixed oxide method and the X-ray diffraction analysis was done to evaluate the crystal structure of the produced handmade ceramics. The experimental results show good agreement with theoretical and simulation results. However at two gamma ray energies, small differences between experimental and theoretical results have been observed. By adding other additives to ceramics and observing the changes in the shielding properties such as flexibility, one can synthesize and optimize ceramics as a neutron shield.

scholarly journals Numerical Solution of a Class of Predator-Prey Systems with Complex Dynamics Characters Based on a Sinc Function Interpolation Collocation Method

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-34
Author(s):  
Mingjing Du ◽  
Pengfei Ning ◽  
Yulan Wang
Keyword(s):  
Collocation Method ◽  
Complex Dynamics ◽  
Sinc Function ◽  
New Approach ◽  
Predator Prey ◽  
Prey System ◽  
Simulation Results ◽  
Pattern Formations ◽  
Theoretical Results ◽  
Good Agreement

Although many kinds of numerical methods have been announced for the predator-prey system, simple and efficient methods have always been the direction that scholars strive to pursue. Based on this problem, in this paper, a new interpolation collocation method is proposed for a class of predator-prey systems with complex dynamics characters. Some complex dynamics characters and pattern formations are shown by using this new approach, and the results have a good agreement with theoretical results. Simulation results show the effectiveness of the method.

AN EFFICIENT LOW-SWING MULTITHRESHOLD-VOLTAGE LOW-POWER DESIGN TECHNIQUE

2004 ◽  
Vol 13 (01) ◽  
pp. 193-203
Author(s):  
A. RJOUB ◽  
M. ALROUSAN ◽  
O. ALJARRAH ◽  
O. KOUFOPAVLOU
Keyword(s):  
Low Power ◽  
Power Dissipation ◽  
Output Voltage ◽  
Supply Voltage ◽  
Low Power Design ◽  
Design Technique ◽  
Cmos Inverter ◽  
Spice Simulation ◽  
Comparison Results ◽  
Simulation Results

New low-power design architecture based on low-swing voltage technique is proposed in this paper. A new CMOS inverter of three output-voltage levels is used to achieve this target. To verify the validity of the proposed technique, three different logic families are used. SPICE simulation results for the three logic families show that more than 45% power dissipation can be saved, without sacrifice the speed operation. Comparison results between the proposed technique and other techniques based on low-swing voltage, shown the superiority of our technique in reducing the power dissipation. Based on 2.4 V supply voltage, a 16 * 16-bit multiplier is implemented by using the proposed technique in 0.25μm silicon technology.

Sign in / Sign up

Export Citation Format

Share Document