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2007 Asia-Pacific Conference on Applied Electromagnetics最新文献

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Time domain analysis of lossy nonuniform transmission line using FDTD technique 用FDTD技术分析有耗非均匀传输线的时域
2007 Asia-Pacific Conference on Applied Electromagnetics Pub Date : 2007-12-01 DOI: 10.1109/APACE.2007.4603880
K. Afrooz, A. Abdipour, A. Tavakoli, M. Movahhedi
{"title":"Time domain analysis of lossy nonuniform transmission line using FDTD technique","authors":"K. Afrooz, A. Abdipour, A. Tavakoli, M. Movahhedi","doi":"10.1109/APACE.2007.4603880","DOIUrl":"https://doi.org/10.1109/APACE.2007.4603880","url":null,"abstract":"In this paper, an efficient numerical method for transient analysis of lossy nonuniform transmission lines is presented. This method considers the frequency-dependent conductor losses into the time-domain solution of the nonuniform multiconductor transmission lines. The results of this method are compared with the conventional time-domain to frequency-domain (TDFD) solution technique and a good agreement has been achieved.","PeriodicalId":356424,"journal":{"name":"2007 Asia-Pacific Conference on Applied Electromagnetics","volume":"357 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124511512","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: 4
Fractal Koch curve for UHF band application 分形科赫曲线在超高频波段的应用
2007 Asia-Pacific Conference on Applied Electromagnetics Pub Date : 2007-12-01 DOI: 10.1109/APACE.2007.4603894
M. Karim, M. Rahim, M. Irfan, T. Masri
{"title":"Fractal Koch curve for UHF band application","authors":"M. Karim, M. Rahim, M. Irfan, T. Masri","doi":"10.1109/APACE.2007.4603894","DOIUrl":"https://doi.org/10.1109/APACE.2007.4603894","url":null,"abstract":"This paper discussed the implementation of the planar dipole antenna using Koch curve structure at UHF band application. The 2nd iteration of Koch curve is arrange in series to reduced the height of the antenna and the ground plane is optimized during simulation. The simulation and measurement of return loss and radiation pattern have been discussed in this paper. The operating frequencies of the antenna is between 680 MHz to 730 MHz which can be used for received channel 57 until 62 in the UHF band frequency.","PeriodicalId":356424,"journal":{"name":"2007 Asia-Pacific Conference on Applied Electromagnetics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125016587","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: 4
Theoretical basis and measurement techniques for SSN (Simultaneous switching noise) on FPGA (Field Programmable Gate Array) products 现场可编程门阵列(FPGA)产品同步开关噪声的理论基础和测量技术
2007 Asia-Pacific Conference on Applied Electromagnetics Pub Date : 2007-12-01 DOI: 10.1109/APACE.2007.4603934
Wei Wei Lo, Larry Smith, Geping Liu, M. Wong, Nafira Daud
{"title":"Theoretical basis and measurement techniques for SSN (Simultaneous switching noise) on FPGA (Field Programmable Gate Array) products","authors":"Wei Wei Lo, Larry Smith, Geping Liu, M. Wong, Nafira Daud","doi":"10.1109/APACE.2007.4603934","DOIUrl":"https://doi.org/10.1109/APACE.2007.4603934","url":null,"abstract":"With the increase of data rate and clock speed, as well as the decrease of power supply voltage on todaypsilas technology, simultaneous switching noise (SSN) has become critical in order for the entire system to have an error free design. The difference in a few milli-volts may cause the system to fail. Therefore, it is very important to understand the characteristics of the SSN glitch of an active device for correct system-level performance. This paper quantifies the amount of SSN glitch launched from a FPGA into the near end of the printed circuit board (PCB) transmission line without being influenced by the response of the measurement system. It also analyzes practical measurement approaches with different probing methods and measurement methodologies to understand the characteristics of the SSN glitch. This paper is a guide to understand the SSN characteristics for system electronic system designers.","PeriodicalId":356424,"journal":{"name":"2007 Asia-Pacific Conference on Applied Electromagnetics","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125023671","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
Ionospheric GPS-TEC observations at Scott Base Antarctica during 2004 2004年南极洲斯科特基地电离层GPS-TEC观测
2007 Asia-Pacific Conference on Applied Electromagnetics Pub Date : 2007-12-01 DOI: 10.1109/APACE.2007.4603924
S. Sulaiman, M. Ali, B. Yatim
{"title":"Ionospheric GPS-TEC observations at Scott Base Antarctica during 2004","authors":"S. Sulaiman, M. Ali, B. Yatim","doi":"10.1109/APACE.2007.4603924","DOIUrl":"https://doi.org/10.1109/APACE.2007.4603924","url":null,"abstract":"In this paper we investigate the ionospheric GPS-TEC observations at New Zealand Scott Base Antarctica (GC: 77.9degS, 166.8degE, CGM: 79.94degS 327.63degE) during the year 2004. Our results and discussions will include the daily TEC variations, diurnal TEC and statistical analyses.","PeriodicalId":356424,"journal":{"name":"2007 Asia-Pacific Conference on Applied Electromagnetics","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129697002","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
Implementing digital finite impulse response filter using FPGA 用FPGA实现数字有限脉冲响应滤波器
2007 Asia-Pacific Conference on Applied Electromagnetics Pub Date : 2007-12-01 DOI: 10.1109/APACE.2007.4603854
A. Razak, M.I. Abu Zaharin, N. Haron
{"title":"Implementing digital finite impulse response filter using FPGA","authors":"A. Razak, M.I. Abu Zaharin, N. Haron","doi":"10.1109/APACE.2007.4603854","DOIUrl":"https://doi.org/10.1109/APACE.2007.4603854","url":null,"abstract":"This paper describes the design of Transposed Form FIR filter implemented in the Spartan-II and Virtex-E family of FPGAs. The design is an 8-tap filter based on 16-bit input samples and 14-bit signed coefficients. The basic building blocks of the filter are KCMs, Adders, Registers, and a delay-locked loop. All the 14-bit coefficient factors are stored with an 18-bit word size in the ROM. The program is written in VHDL source code based on application Xilinx notes [1] that describe the design of an FIR filter. The software tools have been used are Xilinx ISE Webpack 8.1, ModelSim 6.1e and Matlab 7.0.","PeriodicalId":356424,"journal":{"name":"2007 Asia-Pacific Conference on Applied Electromagnetics","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128465808","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: 13
Investigation of Left-Handed Meta Material in microstrip antenna application 左手型元材料在微带天线中的应用研究
2007 Asia-Pacific Conference on Applied Electromagnetics Pub Date : 2007-12-01 DOI: 10.1109/APACE.2007.4603872
H. Majid, M. Rahim
{"title":"Investigation of Left-Handed Meta Material in microstrip antenna application","authors":"H. Majid, M. Rahim","doi":"10.1109/APACE.2007.4603872","DOIUrl":"https://doi.org/10.1109/APACE.2007.4603872","url":null,"abstract":"The speculation and invention of left-handed metamaterial (LH MTM) had sparked the interest of many researchers globally and was said to help increase the gain and directivity of the microstrip antenna. Therefore, the scope of this project was to design, simulate a LH MTM structure in order to proof the claims. The combination of the square rectangular split ring and the thin wire structure was used to obtain the negative value of permeability, mu and the negative permittivity, epsiv. From the simulation done, the gain of the antenna has been increased to 1 dB. This had proven that the focusing effect of the LH MTM really enhance the gain of the antenna.","PeriodicalId":356424,"journal":{"name":"2007 Asia-Pacific Conference on Applied Electromagnetics","volume":"34 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120901450","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
Characterization and model development of CMOS floating gate defect (FGD) CMOS浮栅缺陷(FGD)表征及模型开发
2007 Asia-Pacific Conference on Applied Electromagnetics Pub Date : 2007-12-01 DOI: 10.1109/APACE.2007.4603982
W. Y. Chiew, A. bin A'ain
{"title":"Characterization and model development of CMOS floating gate defect (FGD)","authors":"W. Y. Chiew, A. bin A'ain","doi":"10.1109/APACE.2007.4603982","DOIUrl":"https://doi.org/10.1109/APACE.2007.4603982","url":null,"abstract":"In this paper, a structured development of model and testing strategies for floating gate defect (FGD) are described. It is shown that by using proposed testing strategies, it is possible to reduce defect escapee and easier for defect model migration to different processes. The scopes of work discussed in this paper are focused on characterisation, model development and the detectability of the FGD which usually requires careful and accurate knowledge of the process parameters, including parasitic components of the circuit. The detectability of FGD in scaled down technologies and process variation is examined as well. Simulation results proved that the new developed model is simple yet reliable in FGD detection.","PeriodicalId":356424,"journal":{"name":"2007 Asia-Pacific Conference on Applied Electromagnetics","volume":"2 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120924154","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
Design, fabricate and testing of feed network for 2X2 array antenna 2X2阵列天线馈电网络的设计、制作和测试
2007 Asia-Pacific Conference on Applied Electromagnetics Pub Date : 2007-12-01 DOI: 10.1109/APACE.2007.4603942
M. Shah, M. Abu, M. Aziz
{"title":"Design, fabricate and testing of feed network for 2X2 array antenna","authors":"M. Shah, M. Abu, M. Aziz","doi":"10.1109/APACE.2007.4603942","DOIUrl":"https://doi.org/10.1109/APACE.2007.4603942","url":null,"abstract":"This project describe the design, fabricate and testing of feed network for 2times2 array antenna. This feed network was designed using Microwave Office 2004 with applied Wilkinson power divider to develop the design. The circuit was fabricated on a microstrip substrate with a dielectric constant epsivr =4.7, tan sigma =0.019 and thickness =1.6 mm. The project that had developed can support at IMT (International Mobile Telecommunication) 2000 band which is operating at frequency of 1.8 GHz to 2.2 GHz with mobile station transmitting and it applied to many microwave and millimeter-wave systems and devices such as antenna feeders, power amplifiers, etc.","PeriodicalId":356424,"journal":{"name":"2007 Asia-Pacific Conference on Applied Electromagnetics","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115870139","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
Removal of object’s shadow algorithm 去除物体阴影的算法
2007 Asia-Pacific Conference on Applied Electromagnetics Pub Date : 2007-12-01 DOI: 10.1109/APACE.2007.4603888
Masrullizam Mat Ibrahim, Syed Abdul Rahman Al-Attas, Nor Zaidi Harun
{"title":"Removal of object’s shadow algorithm","authors":"Masrullizam Mat Ibrahim, Syed Abdul Rahman Al-Attas, Nor Zaidi Harun","doi":"10.1109/APACE.2007.4603888","DOIUrl":"https://doi.org/10.1109/APACE.2007.4603888","url":null,"abstract":"During bright day light or under strong lighting condition, shadows will appear and be part of an object in image. Objectpsila shadow in images may cause problem to several important algorithm in the fields of image processing such as object recognition, segmentation and object tracking. Removing the shadows can greatly improve the result of the image processing. To tackle this problem then, this algorithm is divided into three parts; eliminating the surrounding objects of object focused, detecting shadows region and removing the objectpsilas shadow. This algorithm used moving object images to distinguish between object focusing and objects will be eliminated in an image. Support vector machine (SVM) was used to detect the shadow region which classify the image into shadow and non-shadow region. Matlab and Image Processing Toolbox were utilized and OSU-SVM was used as interface SVM to the Matlab environment.","PeriodicalId":356424,"journal":{"name":"2007 Asia-Pacific Conference on Applied Electromagnetics","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121175255","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
Experimental performance of harmonic suppressed Bandpass Filter 谐波抑制带通滤波器的实验性能
2007 Asia-Pacific Conference on Applied Electromagnetics Pub Date : 2007-12-01 DOI: 10.1109/APACE.2007.4603983
J. Marimuthu, M. Esa
{"title":"Experimental performance of harmonic suppressed Bandpass Filter","authors":"J. Marimuthu, M. Esa","doi":"10.1109/APACE.2007.4603983","DOIUrl":"https://doi.org/10.1109/APACE.2007.4603983","url":null,"abstract":"In this paper, the experimental performance of a fabricated single grooved broadband parallel coupled microstrip bandpass filter (PCMBF) with improved passband response and first harmonic suppression is presented. The suppression of the first harmonic spurious response is possible through transmission zero frequency realignment method. A single groove of specific dimensions located at the center of the parallel coupled line has been employed for the realignment of the transmission zero and first harmonic frequencies. An implemented single-stage bandpass filter with various coupling gaps showed harmonics suppressions with optimized groove. Then, two-stage bandpass filters of different operating bandwidth were designed for optimized groove. It was then implemented and tested. The measured results validate real harmonics suppression performance with controllable single groove parameters.","PeriodicalId":356424,"journal":{"name":"2007 Asia-Pacific Conference on Applied Electromagnetics","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121712006","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: 6
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