检索结果-内蒙古大学图书馆

Importance of Three-Dimensional Piezoelectric Coupling Modeling in Quantitative Analysis of Piezoelectric Actuators

Computer Modeling in Engineering & Sciences 2023年第8期136卷 1187-1206页

作者： Daisuke Ishihara Prakasha Chigahalli Ramegowda Shoichi Aikawa Naoki Iwamaru Department of Intelligent and Control Systems Kyushu Institute of TechnologyIizukaFukuoka820-8502Japan Institute of Microelectronics Agency for ScienceTechnology and ResearchInnovis Tower138634Singapore

This paper demonstrates the importance of three-dimensional(3-D)piezoelectric coupling in the electromechanical behavior of piezoelectric devices using three-dimensional finite element analyses based on weak and strong coupling models for a thin cantilevered piezoelectric bimorph *** is found that there is a significant difference between the strong and weak coupling solutions given by coupling direct and inverse piezoelectric effects(i.e.,piezoelectric coupling effect).In addition,there is significant longitudinal bending caused by the constraint of the inverse piezoelectric effect in the width direction at the fixed end(i.e.,3-D effect).Hence,modeling of these effects or 3-D piezoelectric coupling modeling is an electromechanical basis for the piezoelectric devices,which contributes to the accurate prediction of their behavior.

关键词： Piezoelectric coupling effect piezoelectric bimorph actuator weak coupling strong coupling three-dimensional finite element analysis

来源：评论

学校读者我要写书评

暂无评论

Modeling the Impact of AlGaAs Heterostructure Barrier Layer Thickness on Microwave Characteristics of Transistors Based on 0.15 µm pHEMT LNA Technology 25

Modeling the Impact of AlGaAs Heterostructure Barrier Layer ...

引用

25th IEEE International Conference of Young Professionals in Electron Devices and Materials, EDM 2024

作者： Shesterikov, Alexandr E. Shesterikova, Darya A. Erofeev, Evgeniy V. Development Department of NPC "Microelectronics" AO «NPF «Micran» Tomsk State University of Control Systems and Radioelectronics Tomsk Russia Development Department of NPC "Microelectronics" AO «NPF «Micran» Tomsk State University of Control Systems and Radioelectronics Institute of Atmospheric Optics V.E. Zuev SB RAS Tomsk Russia

ISBN: (纸本)9798350389234

This paper presents the results of modeling the effect of the thickness of the barrier layer of AlGaAs heterostructure pHEMT with a T-gate length of 0.15 μm on the static and microwave characteristics of the transistor. Modeling was performed in the Synopsys TCAD software package. As a result of the study, it was found that with increasing thickness of the AlGaAs barrier layer there is a decrease in the maximum of the transconductance of the transistor and a shift in the position of this maximum on the gate voltage towards more negative voltages. This can be explained by the fact that as the distance from the gate electrode to the channel layer increases, it becomes more difficult to control the concentration of carriers in the channel by the effect of the gate field. The current dependence of the current gain behaves in a similar way. The gain characteristics of the transistor also deteriorate as the thickness of the AlGaAs barrier layer increases. Thus, |S21| at 1 GHz decreases from 17,1 dB to 12,7 dB. The current gain |h21| at 1 GHz decreases from 135 to 125. The cutoff frequency also decreases from 131 GHz to 101 GHz when the thickness of the AlGaAs barrier layer is changed from 18 nm to 24 nm. © 2024 IEEE.

关键词： Heterojunctions

来源：评论

学校读者我要写书评

暂无评论

Quasi-Chaotic Microwave Oscillations: Formation, Application to Test Vector Network Analyzers 16

Quasi-Chaotic Microwave Oscillations: Formation, Application...

引用

16th IEEE International Scientific and Technical Conference Actual Problems of Electronic Instrument Engineering, APEIE 2023

作者： Arutyunyan, Artush A. Minenko, Dmitriy E. Malyutin, George A. Artamonov, Aleksndr A. Malyutin, Nickolay D. Tomashevich, Aleksandr A. Dept. of Design of Units and Components for Radioelectronic Systems Tomsk State University of Control Systems and Radioelectronics Tomsk Russia Laboratory of Microelectronics The Research Institute of Microelectronic Systems Tomsk State University of Control Systems and Radioelectronics Tomsk Russia

ISBN: (纸本)9798350330885

The design of quasi-chaotic oscillation formation modules based on strip transmission lines with partial dielectric lithium niobate crystals is described. The problem of considering the peculiarities of measuring the parameters of quasi-chaotic signal formation modules and testing vector network analyzers using them in measuring frequency and dynamic characteristics is stated and solved. Proposition to use the comparison of experimental results of measurements of the quasi-chaotic signal formation module on the certified vector network analyzer (VNA 1) and on the tested virtual device (VNA 2) to estimate the insertion errors was made. Experimental frequency characteristics of the scattering parameters in the frequency range from 0.03 to 20 GHz are presented. The effect of formation of multiple resonances distorting the transmission coefficient and reflection coefficient is demonstrated. It is being proposed to apply the shaping modules for broadband dynamic calibration of panoramic network analyzers. The calibration quality is assessed by calculating the difference between the obtained modules of transmission coefficients during measurements on metrological devices and tested serial devices. Modeling of insertion distortions of five types has been carried out: systematic additive independent of frequency;linear dependence;nonlinear distortions of the second order;nonlinear distortions of the third order;polynomial dependence of distortions. After determining the distortions introduced into the frequency dependence of the transmission coefficient, the VNA 2 is calibrated. © 2023 IEEE.

关键词： Electric network analyzers

来源：评论

学校读者我要写书评

暂无评论

Sparse Millimeter Wave Channel Estimation from Partially Coherent Measurements

Sparse Millimeter Wave Channel Estimation from Partially Coh...

引用

IEEE International Conference on Communications (ICC)

作者： Weijia Yi Nitin Jonathan Myers Geethu Joseph Department of Microelectronics Delft University of Technology The Netherlands Delft Center for Systems and Control Delft University of Technology The Netherlands

ISBN: (数字)9781728190549

ISBN: (纸本)9781728190556

This paper develops a channel estimation technique for millimeter wave (mmWave) communication systems. Our method exploits the sparse structure in mmWave channels for low training overhead and accounts for the phase errors in the channel measurements due to phase noise at the oscillator. Specifically, in IEEE 802.11ad/ay-based mmWave systems, the phase errors within a beam refinement protocol packet are almost the same, while the errors across different packets are substantially different. Consequently, standard sparsity-aware algorithms, which ignore phase errors, fail when channel measurements are acquired over multiple beam refinement protocol packets. We present a novel algorithm called partially coherent matching pursuit for sparse channel estimation under practical phase noise perturbations. Our method iteratively detects the support of sparse signal and employs alternating minimization to jointly estimate the signal and the phase errors. We numerically show that our algorithm can reconstruct the channel accurately at a lower complexity than the benchmarks.

关键词： Phase noise Protocols Phase measurement Millimeter wave measurements Measurement uncertainty Matching pursuit algorithms Channel estimation

来源：评论

学校读者我要写书评

暂无评论

Investigation of the Influence of Heterostructure on the Parameters of Microwave Transistors 16

Investigation of the Influence of Heterostructure on the Par...

引用

16th IEEE International Scientific and Technical Conference Actual Problems of Electronic Instrument Engineering, APEIE 2023

作者： Shesterikov, Alexandr E. Shesterikova, Darya A. Erofeev, Evgeniy V. Development Department of NPC "Microelectronics" AO «NPF «Micran Tomsk State University of Control Systems and Radioelectronics Tomsk634050 Russia Institute of Atmospheric Optics V.E. Zuev SB RAS Tomsk634055 Russia

ISBN: (纸本)9798350330885

The paper presents an approach to the selection of the optimal heterostructure to ensure the specified parameters of HEMT. The parameters of four heterostructures with different parameters were analyzed in the framework of the study. Test transistor elements were fabricated on each of the heterostructures using 0.15 μm pHEMT process technology. The following parameters were measured: drain current per unit channel length at gate voltage equal to zero;maximum drain current per unit channel length;transistor cutoff voltage at drain current equal to 1 mA/mm;maximum transistor steepness value. As a result of analyzing the obtained data, a structure with carrier mobility in the channel of 5005 cm2/(V-s) and σ-doping concentration in AlGaAs of 1, 31·1012 cm-2 was selected. Also, a related task was to determine the optimal etching time of the gate recess. As a result of the analysis, the optimal etching time was 1.5 min. At this etching time, the greatest coincidence of transistor characteristics with the required values is ensured. © 2023 IEEE.

关键词： Etching

来源：评论

学校读者我要写书评

暂无评论

Modeling the Impact of AlGaAs Heterostructure Barrier Layer Thickness on Microwave Characteristics of Transistors Based on 0.15 μm pHEMT LNA Technology

Modeling the Impact of AlGaAs Heterostructure Barrier Layer ...

引用

Annual Siberian Russian Workshop on Electron Devices and Materials (EDM)

作者： Alexandr E. Shesterikov Darya A. Shesterikova Evgeniy V. Erofeev Development Department of NPC “Microelectronics” AO «NPF «Micran» Tomsk State University of Control Systems and Radioelectronics Tomsk Russia Development Department of NPC “Microelectronics” AO «NPF «Micran» Tomsk State University of Control Systems and Radioelectronics Institute of Atmospheric Optics V.E. Zuev SB RAS Tomsk Russia

ISBN: (数字)9798350389234

ISBN: (纸本)9798350353051

关键词： Electrodes PHEMTs Cutoff frequency Production Logic gates Space charge Microwave transistors

来源：评论

学校读者我要写书评

暂无评论

Quasi-Chaotic Microwave Oscillations: Formation, Application to Test Vector Network Analyzers

Quasi-Chaotic Microwave Oscillations: Formation, Application...

引用

International Conference on Actual Problems of Electronic Instrument Engineering (APEIE)

作者： Artush A. Arutyunyan George A. Malyutin Nickolay D. Malyutin Dmitriy E. Minenko Aleksndr A. Artamonov Aleksandr A. Tomashevich Dept. of Design of Units and Components for Radioelectronic Systems Tomsk State University of Control Systems and Radioelectronics Tomsk Russia Laboratory of Microelectronics of the Research Institute of Microelectronic Systems Tomsk State University of Control Systems and Radioelectronics Tomsk Russia

The design of quasi-chaotic oscillation formation modules based on strip transmission lines with partial dielectric lithium niobate crystals is described. The problem of considering the peculiarities of measuring the parameters of quasi-chaotic signal formation modules and testing vector network analyzers using them in measuring frequency and dynamic characteristics is stated and solved. Proposition to use the comparison of experimental results of measurements of the quasi-chaotic signal formation module on the certified vector network analyzer (VNA 1) and on the tested virtual device (VNA 2) to estimate the insertion errors was made. Experimental frequency characteristics of the scattering parameters in the frequency range from 0.03 to 20 GHz are presented. The effect of formation of multiple resonances distorting the transmission coefficient and reflection coefficient is demonstrated. It is being proposed to apply the shaping modules for broadband dynamic calibration of panoramic network analyzers. The calibration quality is assessed by calculating the difference between the obtained modules of transmission coefficients during measurements on metrological devices and tested serial devices. Modeling of insertion distortions of five types has been carried out: systematic additive independent of frequency; linear dependence; nonlinear distortions of the second order; nonlinear distortions of the third order; polynomial dependence of distortions. After determining the distortions introduced into the frequency dependence of the transmission coefficient, the VNA 2 is calibrated.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Novel Bandpass RLC-Filter 30

Novel Bandpass RLC-Filter

引用

30th Telecommunications Forum, TELFOR 2022

作者： Denisenko, Darya Prokopenko, Nikolay Butyrlagin, Nikolay Ivanov, Yuri Don State Technical University Department of scientific research Southern Federal University Department of Automatic Control Systems Rostov-on-Don Russia Don State Technical University Department of Information Systems and Radio Engineering Institute for Design Problems in Microelectronics of RAS Zelenograd Rostov-on-Don Russia Institute for Design Problems in Microelectronics of RAS Zelenograd Rostov-on-Don Russia Southern Federal University Department of Automatic Control Systems Rostov-on-Don Russia

ISBN: (数字)9781665472739

ISBN: (纸本)9781665472739

A new architecture of the band-pass RLC filter (RLC-PBF) is considered, in which independent adjustment of the pole frequency, pole quality factor and transmission coefficient is implemented with different resistors at constant values of the capacitance of the frequency-setting capacitor and the frequency-setting inductance. The results of the RLC-PBF simulation in the Micro-Cap environment are discussed, which confirm these properties. The basic mathematical expressions for the transfer function of the RLC-PBF and the parameters of its amplitude-frequency characteristic are obtained. The proposed RLC-PBF circuitry is recommended for adaptive signal filtering in radio engineering and measuring systems. Due to the appropriate choice of parameters of active and passive elements, the operation of the considered RLC-PBF is ensured both at low and at high frequencies. © 2022 IEEE.

关键词： Bandpass filters

来源：评论

学校读者我要写书评

暂无评论

Sparse Millimeter Wave Channel Estimation From Partially Coherent Measurements

arXiv

引用

arXiv 2023年

作者： Yi, Weijia Myers, Nitin Jonathan Joseph, Geethu Department of Microelectronics Delft University of Technology Netherlands Delft Center for Systems and Control Delft University of Technology Netherlands

—This paper develops a channel estimation technique for millimeter wave (mmWave) communication systems. Our method exploits the sparse structure in mmWave channels for low training overhead and accounts for the phase errors in the channel measurements due to phase noise at the oscillator. Specifically, in IEEE 802.11ad/ay-based mmWave systems, the phase errors within a beam refinement protocol packet are almost the same, while the errors across different packets are substantially different. Consequently, standard sparsity-aware algorithms, which ignore phase errors, fail when channel measurements are acquired over multiple beam refinement protocol packets. We present a novel algorithm called partially coherent matching pursuit for sparse channel estimation under practical phase noise perturbations. Our method iteratively detects the support of sparse signal and employs alternating minimization to jointly estimate the signal and the phase errors. We numerically show that our algorithm can reconstruct the channel accurately at a lower complexity than the benchmarks. Copyright © 2023, The Authors. All rights reserved.

关键词： Phase noise

来源：评论

学校读者我要写书评

暂无评论

Geometric Parameterized Macromodel of Uniaxial Capacitance Accelerometer Based on Modal Superposition 16

Geometric Parameterized Macromodel of Uniaxial Capacitance A...

引用

16th IEEE International Scientific and Technical Conference Actual Problems of Electronic Instrument Engineering, APEIE 2023

作者： Gridchin, Aleksandr V. Koleda, Aleksei N. Barbin, Evgenii S. Nesterenko, Tamara G. Kolchuzhin, Vladimir A. Department of Semiconductor Devices and Microelectronics Novosibirsk State Technical University Novosibirsk Russia Department of Electronic Engineering National Research Tomsk Polytechnic University Tomsk Russia Laboratory of Intelligent Computer Systems Tomsk State University of Control Systems and Radioelectronics Tomsk Russia Advanced Cellular Group Qorvo Munich GmbH Munich Germany

ISBN: (纸本)9798350330885

The paper presents a piecewise geometric parameterization method and a parametric analysis of uniaxial capacitance accelerometer using a reduced model formulated on the modal superposition method. The extraction of parameters for the macromodel such as modal frequencies, modal masses, modal stiffnesses, strain energy, and capacitances are described. The reduced model consists of the two modes: torsion mode, and transversal mode, three electrodes in the electrostatic domain, and eight master nodes in the geometrical domain located at the edges of the plate. The generation of the discrete macromodels is executed using commercial software. The thickness of the plate has been selected as a design parameter. Linear piecewise interpolation is used for macromodel parameterization which have been done inside VHDL-AMS code. The accelerometer's dynamic response simulated using of parametrized macromodel considering the mechanical contact phenomena and the nonlinear electrostatic interaction are presented and discussed. The developed approach can be applied for fast system level simulations in view of the variation of the geometric parameters. © 2023 IEEE.

关键词： Capacitance

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：