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2013 21st Iranian Conference on Electrical Engineering (ICEE)最新文献

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A novel 2-pole MEMS tunable bandpass filter for satellite communication applications 一种用于卫星通信的新型2极MEMS可调谐带通滤波器
2013 21st Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2013-05-14 DOI: 10.1109/IRANIANCEE.2013.6599545
Sadegh Sabbagh, A. Akbarzadeh, Ashkan Mofidi, K. Mafinezhad
{"title":"A novel 2-pole MEMS tunable bandpass filter for satellite communication applications","authors":"Sadegh Sabbagh, A. Akbarzadeh, Ashkan Mofidi, K. Mafinezhad","doi":"10.1109/IRANIANCEE.2013.6599545","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2013.6599545","url":null,"abstract":"Two low loss, high performance tunable micro-electromechanical filters have been investigated for communications and satellite applications. The 2-pole bandpass filter including two short folded resonators and two transmission zeros is considered. The folded resonators result in a small size of 2.4 × 2 mm2. Two tunable capacitor switch banks of MEMS switches are used to tune the center frequency. The first proposed switches are cantilever series switches and the second switches are shunt switches. The tuning range is from 4.075 GHz to 6.3 GHz with a bandwidth of 4% (200 MHz). The results show an insertion loss of 0.7 dB and return loss more than 24 dB over the tuning range of 44%.","PeriodicalId":383315,"journal":{"name":"2013 21st Iranian Conference on Electrical Engineering (ICEE)","volume":"177 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116152728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Circuit power considered energy efficiency in Decode-and-Forward relaying 译码转发继电器中考虑能量效率的电路功率
2013 21st Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2013-05-14 DOI: 10.1109/IRANIANCEE.2013.6599751
Mohammad Hossein Chinaei, M. Omidi, J. Kazemi
{"title":"Circuit power considered energy efficiency in Decode-and-Forward relaying","authors":"Mohammad Hossein Chinaei, M. Omidi, J. Kazemi","doi":"10.1109/IRANIANCEE.2013.6599751","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2013.6599751","url":null,"abstract":"In this paper we analyze Energy Efficiency (EE) and Spectral Efficiency (SE) in relay based systems. Our system model is based on two data transmitters as sources and one relay node with Decode-and-Forward (DF) scheme. The system can work in two strategies, DF relaying and direct transmission. In addition to transmission power we consider circuit power of nodes in our Power Consumption Model (PCM) and find the best EE-SE for each strategy by optimizing transmission time and power of each node. Simulation results show that SE-EE trade off in DF relaying has better performance than direct transmission. Despite traditional research that shows exponential decreasing of EE with increase in SE, we will show by considering circuit power, EE-SE relation has a cup shape. The best EE will be achieved by optimizing power and time duration of transmission.","PeriodicalId":383315,"journal":{"name":"2013 21st Iranian Conference on Electrical Engineering (ICEE)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122563277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Network-based robust H∞ stabilization of uncertain systems 基于网络的不确定系统鲁棒H∞镇定
2013 21st Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2013-05-14 DOI: 10.1109/IRANIANCEE.2013.6599617
A. Farnam, R. M. Esfanjani
{"title":"Network-based robust H∞ stabilization of uncertain systems","authors":"A. Farnam, R. M. Esfanjani","doi":"10.1109/IRANIANCEE.2013.6599617","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2013.6599617","url":null,"abstract":"This paper deals with the problem of the stability analysis and controller gain synthesis for networked control systems with the network-induced delay, data packet dropout, parameters' uncertainties and disturbance input. To achieve less conservative results compared with existing methods in the literature, a novel Lyapunov-Krasovskii functional is constructed and new free-weighting matrices are introduced to increase degrees of freedom in the sufficient robust stability conditions. The maximum allowable delay bound, minimum attenuation level and the gain of memoryless controller is obtained by solving a set of linear matrix inequalities (LMIs). Finally an illustrative example is given to reveal the effectiveness of the proposed approach.","PeriodicalId":383315,"journal":{"name":"2013 21st Iranian Conference on Electrical Engineering (ICEE)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116349922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A 2.4-GHz subthreshold down-conversion mixer with improved noise figure 一种改进噪声系数的2.4 ghz亚阈值下变频混频器
2013 21st Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2013-05-14 DOI: 10.1109/IRANIANCEE.2013.6599781
M. Safari, S. Toofan, Leila Bagheriye
{"title":"A 2.4-GHz subthreshold down-conversion mixer with improved noise figure","authors":"M. Safari, S. Toofan, Leila Bagheriye","doi":"10.1109/IRANIANCEE.2013.6599781","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2013.6599781","url":null,"abstract":"In this paper, a broadband low noise subthreshold mixer in 0.18 μm-CMOS, based on double balanced Gilbert cell is presented. Low noise figure and high conversion gain at wide bandwidth frequency range are two important factors of broadband mixers. All transistors in this design are biased in subthreshold region in order to suppress mixer noise figure. Also, a static current injection circuit (current bleeding circuit) is used to improve its noise performance. The peaking inductor has been utilized to improve mixer gain performance. Simulation results of designed mixer show excellent performance of noise and gain. It achieves a maximum conversion gain of 22.4 dB and an average single-sideband noise figure of 8.4 dB at 5 GHz bandwidth. Circuit consumption power is 16 mW at 1.8V supply voltage.","PeriodicalId":383315,"journal":{"name":"2013 21st Iranian Conference on Electrical Engineering (ICEE)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127142456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Automated spectral analysis for pediatric cardiac auscultation 儿童心脏听诊的自动频谱分析
2013 21st Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2013-05-14 DOI: 10.1109/IRANIANCEE.2013.6599644
A. R. Kenari, M. Ghassemian
{"title":"Automated spectral analysis for pediatric cardiac auscultation","authors":"A. R. Kenari, M. Ghassemian","doi":"10.1109/IRANIANCEE.2013.6599644","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2013.6599644","url":null,"abstract":"Early recognition of heart disease is an important goal in pediatrics. Developing countries have a large population of children living with undiagnosed heart murmurs. As a result of an accompanying skills shortage, most of these children will not get the necessary treatment. We designed a system for automatically detecting systolic murmurs due to a variety of conditions. This could enable health care providers in developing countries with tools to screen large amounts of children without the need for expensive equipment or specialist skills. For this purpose an algorithm was designed and tested to detect heart murmurs in digitally recorded signals. A specificity of 100% and a sensitivity of 90.57% were achieved using signal processing techniques and a k-nn as classifier.","PeriodicalId":383315,"journal":{"name":"2013 21st Iranian Conference on Electrical Engineering (ICEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125808970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A current-mode membership function generator with continuous slop tunability and low power consumption 具有连续斜率可调和低功耗的电流型隶属函数发生器
2013 21st Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2013-05-14 DOI: 10.1109/IRANIANCEE.2013.6599652
Naser Beyraghi, A. Khoei, K. Hadidi
{"title":"A current-mode membership function generator with continuous slop tunability and low power consumption","authors":"Naser Beyraghi, A. Khoei, K. Hadidi","doi":"10.1109/IRANIANCEE.2013.6599652","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2013.6599652","url":null,"abstract":"In this paper to multiply or divide the current signals continuously with low power consumption, a simple but effective approach is proposed that is useful in current-mode analog circuits such as membership function generators in fuzzy logic controllers (FLC) and we study the effect of this approach on a typical fuzzifier. Simulation results show that by means of this approach the slope of membership functions can be tunable in an analog range while the power consumption is approximately in its minimum value 426μW. Also the circuit of a novel analog divider is presented which its power consumption is less than conventional dividers. The circuits are designed in 0.35μm CMOS process and the simulations are performed in HSPISE simulator.","PeriodicalId":383315,"journal":{"name":"2013 21st Iranian Conference on Electrical Engineering (ICEE)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124132923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel design of MEMS gyroscope with control capability 一种具有控制能力的微机电系统陀螺仪的新设计
2013 21st Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2013-05-14 DOI: 10.1109/IRANIANCEE.2013.6599662
Z. Yousefi, Zahra Deyhim, E. N. Aghdam, H. B. Ghavifekr
{"title":"A novel design of MEMS gyroscope with control capability","authors":"Z. Yousefi, Zahra Deyhim, E. N. Aghdam, H. B. Ghavifekr","doi":"10.1109/IRANIANCEE.2013.6599662","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2013.6599662","url":null,"abstract":"High performance MEMS gyroscopes can be implemented by embedding in a closed loop controller. For these gyroscopes, the electrostatic controlled force on the proof mass is inherently nonlinear. This study reports a MEMS gyroscope with control capability in which comb drive electrodes are employed as the controlling mechanism to linearize the electrostatic controlled force. To avoid interaction of drive and control comb drive electrodes, another mass has been added to the structure. Consequently, proposed gyroscope consists of a 2-DOF sense mode oscillator and a 1-DOF drive mode oscillator. The prototype with an overall size of 0.46 × 0.635 mm is designed to be fabricated in surface Micromachining process with 3 μm structural layer thickness. The device operation has verified by Finite Element Method simulations showing a raw mechanical sensitivity of 32 nm for drive direction oscillation amplitude of 120 nm and angular rotation of 50 [°/s].","PeriodicalId":383315,"journal":{"name":"2013 21st Iranian Conference on Electrical Engineering (ICEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126350949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Synchronized coherent swarming of a collaborative multi agent system in presence of disturbance 存在干扰的协同多智能体系统的同步相干群
2013 21st Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2013-05-14 DOI: 10.1109/IRANIANCEE.2013.6599905
R. Rahimi, F. Abdollahi
{"title":"Synchronized coherent swarming of a collaborative multi agent system in presence of disturbance","authors":"R. Rahimi, F. Abdollahi","doi":"10.1109/IRANIANCEE.2013.6599905","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2013.6599905","url":null,"abstract":"Swarming of a set of agents consists of some unmanned aerial vehicles (UAVs) and some unmanned ground vehicles (UGVs) with coherent formation is studied. A decentralized robust controller is presented in order to reject the environmental disturbances and prone a rigid formation. Since the disturbance effecting UAVs is stronger than the one for UGVs, to tolerate this differences, the error of the neighbours are used by each agent as one of the entered signal of its controller to make the formation synchronized. The decentralized method improves the reliability of the performance. This algorithm is applied in simulation and the results approve the accepted performance of the proposed approach.","PeriodicalId":383315,"journal":{"name":"2013 21st Iranian Conference on Electrical Engineering (ICEE)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121533719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A protection scheme for series capacitor compensated transmission lines that uses DC component of line current 一种利用线路电流直流分量的串联电容补偿传输线保护方案
2013 21st Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2013-05-14 DOI: 10.1109/IRANIANCEE.2013.6599886
A. Razavi, H. Samet
{"title":"A protection scheme for series capacitor compensated transmission lines that uses DC component of line current","authors":"A. Razavi, H. Samet","doi":"10.1109/IRANIANCEE.2013.6599886","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2013.6599886","url":null,"abstract":"The use of series compensating capacitors in Transmission line has many advantages specially increasing the power transfer capacity of long transmission lines. However, they bring with themselves significant protection challenge especially for distance relays. This paper presents a fault zone detection method in series compensated transmission lines using two-ended data. The presented algorithm is based on computing the dc component of line current. The accuracy of the proposed algorithm has been tested on a 300km, 400kV series capacitor compensated transmission line using PSCAD software.","PeriodicalId":383315,"journal":{"name":"2013 21st Iranian Conference on Electrical Engineering (ICEE)","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127702345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Ultrasound image segmentation by using a FIR neural network 利用FIR神经网络对超声图像进行分割
2013 21st Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2013-05-14 DOI: 10.1109/IRANIANCEE.2013.6599759
Nima Torbati, A. Ayatollahi, A. Kermani
{"title":"Ultrasound image segmentation by using a FIR neural network","authors":"Nima Torbati, A. Ayatollahi, A. Kermani","doi":"10.1109/IRANIANCEE.2013.6599759","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2013.6599759","url":null,"abstract":"Ultrasound (US) image segmentation is a difficult task because of its heavy speckle noise, low quality and blurry boundaries. In this paper, a new neural network based method is proposed for ultrasound images segmentation. A modified self organizing map (SOM) network, named finite impulse response SOM (FIR-SOM), is utilized to segment ultrasound images. A two dimensional (2D) discrete wavelet transform (DWT) is used to build the input feature space of the network. Experimental results show that FIR-SOM discovers the pattern of the input image properly and is robust against noise. Segmentation results of breast ultrasound images (BUS) demonstrate that there is a strong correlation between tumor region selected by a physician and the tumor region segmented by our proposed method.","PeriodicalId":383315,"journal":{"name":"2013 21st Iranian Conference on Electrical Engineering (ICEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128807989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
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