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2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems最新文献

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Optical micro-ring amplifier 光微环放大器
2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems Pub Date : 2009-12-01 DOI: 10.1109/ELECTRO.2009.5441049
Ramapati Mishra, Laxmikant Singh, R. Ramakrishnan
{"title":"Optical micro-ring amplifier","authors":"Ramapati Mishra, Laxmikant Singh, R. Ramakrishnan","doi":"10.1109/ELECTRO.2009.5441049","DOIUrl":"https://doi.org/10.1109/ELECTRO.2009.5441049","url":null,"abstract":"In this paper application of micro-ring resonator as an amplifier is proposed by suitably doping the ring and confining the coupled wavelength to undergo required number of rounds. Amplification otherwise attained using long fiber waveguides can be obtained within a small structure of ring resonator.","PeriodicalId":149384,"journal":{"name":"2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126586348","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
Electrical properties of multiwalled carbon nanotubes /polyaniline nanocomposite 多壁碳纳米管/聚苯胺纳米复合材料的电学性能
2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems Pub Date : 2009-12-01 DOI: 10.1109/ELECTRO.2009.5441048
Sandeep K. Das, R. Prakash
{"title":"Electrical properties of multiwalled carbon nanotubes /polyaniline nanocomposite","authors":"Sandeep K. Das, R. Prakash","doi":"10.1109/ELECTRO.2009.5441048","DOIUrl":"https://doi.org/10.1109/ELECTRO.2009.5441048","url":null,"abstract":"A nanocomposite of functionalized 2.5 wt.% carboxylated multiwalled carbon nanotubes (MWCNTs) /polyaniline (PANi) is synthesized using in situ chemical polymerization method. MWCNT is coated by using in-situ chemical polymerization of Polyaniline polymer. Structure and morphology of nanocomposite is characterized, using X-ray diffraction pattern (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), demonstrate that a thin layer of PANi (polyaniline) is well coated on the surface of MWCNT. Electrical properties were characterized using four probe conductivity measurement and electrochemical impedance spectroscopy. The conductivity of PANI-coated MWCNT increases by a factor of three orders due to the incorporation of PANi onto the pore surface of MWNT. The double layer capacitance is also calculated using impedance measurement.","PeriodicalId":149384,"journal":{"name":"2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132861106","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
Design of Chebyshev band pass filter 切比雪夫带通滤波器的设计
2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems Pub Date : 2009-12-01 DOI: 10.1109/ELECTRO.2009.5441130
Amit Pal, Rajesh S. Kumar, V. Mohan, A. K. Tiwary
{"title":"Design of Chebyshev band pass filter","authors":"Amit Pal, Rajesh S. Kumar, V. Mohan, A. K. Tiwary","doi":"10.1109/ELECTRO.2009.5441130","DOIUrl":"https://doi.org/10.1109/ELECTRO.2009.5441130","url":null,"abstract":"This paper describes the performance of Chebyshev band pass filter. In this paper Genetic Algorithm optimization technique is used to find out the coupling coefficient and mutual coupling coefficient. With this optimization, the performance will be improved.","PeriodicalId":149384,"journal":{"name":"2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133615851","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
Detectors for the astronomical applications 用于天文应用的探测器
2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems Pub Date : 2009-12-01 DOI: 10.1109/ELECTRO.2009.5441073
S. Saha
{"title":"Detectors for the astronomical applications","authors":"S. Saha","doi":"10.1109/ELECTRO.2009.5441073","DOIUrl":"https://doi.org/10.1109/ELECTRO.2009.5441073","url":null,"abstract":"Astronomical observations are dependent on focal-plane instruments, and detectors continue to play a key role. The detector technology is evolving rather fast with the large-format CMOS and CCD array mosaics, electron-multiplying CCDs, electron-avalanche photodiode arrays, quantum-well IR photon detectors etc. However, the requirements of artifact-free photon shot noise limited images are the higher sensitivity, higher quantum efficiency, reduced noise that includes dark current, read-out and amplifier noise, smaller point-spread functions and higher spectral bandwidth, etc. One of the fastest growing applications is signal sensing, particularly wavefront sensing for adaptive optics and fringe tracking for interferometry. A few detectors that are being used in astronomical imaging are discussed in this talk.","PeriodicalId":149384,"journal":{"name":"2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133423567","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
An optical configuration acceleration method using negative logic implementation 一种采用负逻辑实现的光组态加速方法
2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems Pub Date : 2009-12-01 DOI: 10.1109/ELECTRO.2009.5441043
R. Moriwaki, Minoru Watanabe
{"title":"An optical configuration acceleration method using negative logic implementation","authors":"R. Moriwaki, Minoru Watanabe","doi":"10.1109/ELECTRO.2009.5441043","DOIUrl":"https://doi.org/10.1109/ELECTRO.2009.5441043","url":null,"abstract":"Up to now, as one of multi-context devices, an optically reconfigurable gate array (ORGA) has been developed to achieve high-speed reconfiguration. Since quick context switching allows implementation of many functions onto a gate array without idle time, fast reconfiguration is extremely important for multi-context devices. In ORGAs, the easiest way to increase the reconfiguration frequency is to use high-power lasers. However, such high-power lasers increase power consumption and package size. In the worst case, they might require a cooling system. For that reason, this paper proposes a negative logic implementation method by which optical configurations can be accelerated without ORGA architecture modification and any increase of laser power. This time, the method was demonstrated on a dynamic optically reconfigurable gate array architecture. Based on the experimental results, this paper clarifies the acceleration method's effectiveness.","PeriodicalId":149384,"journal":{"name":"2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115446524","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
Numerical study on field effect MOS transistor detection response to modulated terahertz radiation signal 场效应MOS晶体管对调制太赫兹辐射信号检测响应的数值研究
2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems Pub Date : 2009-12-01 DOI: 10.1109/ELECTRO.2009.5441062
Yinglei Wang, Zhifeng Yan, Jingxuan Zhu, Xinnan Lin, F. He
{"title":"Numerical study on field effect MOS transistor detection response to modulated terahertz radiation signal","authors":"Yinglei Wang, Zhifeng Yan, Jingxuan Zhu, Xinnan Lin, F. He","doi":"10.1109/ELECTRO.2009.5441062","DOIUrl":"https://doi.org/10.1109/ELECTRO.2009.5441062","url":null,"abstract":"The detector response characteristics of the field effect MOS transistor (MOSFET) to modulated terahertz radiation signal are studied in detail in this paper by a numerical simulation program developed from the basic hydrodynamic equations which govern the terahertz signal transport in the MOSFET and a universal MOSFET charge density equation which makes this program suitable in a wide range of operation region of MOSFET terahertz detector. The simulation results agree well with the existing theory which is only suitable in the nonresonant region. The developed numerical simulation program is also used to analyze the photoresponse characteristics of the MOSFET detector to modulated terahertz radiation in the resonant region, demonstrating potential application in the detector design and optimization from a MOSFET.","PeriodicalId":149384,"journal":{"name":"2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124285405","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
Design of dual wide band CPW-fed fractal antenna 双宽带cpw馈电分形天线设计
2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems Pub Date : 2009-12-01 DOI: 10.1109/ELECTRO.2009.5441115
Raj Kumar, P. Malathi
{"title":"Design of dual wide band CPW-fed fractal antenna","authors":"Raj Kumar, P. Malathi","doi":"10.1109/ELECTRO.2009.5441115","DOIUrl":"https://doi.org/10.1109/ELECTRO.2009.5441115","url":null,"abstract":"This paper presents CPW -fed Square Shaped fractal antenna. The Antenna has been designed on FR4 substrate εr =4.3 and thickness 1.53 mm. The antenna has been fabricated and tested using VNA. The experimental result exibihits dual bands i.e. from frequency 0.79 GHz – 2.24 GHz and from frequency 3.53 GHz to 12.29 GHz. This corresponds to 1.45 GHz and 8.76 GHz respectively. The lower end frequency of antenna is shifted to 0.79 GHz in comparison to simple convention coaxially feed microstrip patch resonant 1.44 GHz. This reveals the size reduction of fractal antenna. The experimental radiation pattern of this antenna has been observed nearly similar at all frequencies. This type of antenna can be useful for GPS, PCS, Vehicular radar and imaging system applications.","PeriodicalId":149384,"journal":{"name":"2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114765702","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 of a low-power 10GHz frequency divider using Extended True Single Phase Clock (E-TSPC) logic 采用扩展真单相时钟(E-TSPC)逻辑的低功耗10GHz分频器的设计
2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems Pub Date : 2009-12-01 DOI: 10.1109/ELECTRO.2009.5441145
A. Bazzazi, A. Nabavi
{"title":"Design of a low-power 10GHz frequency divider using Extended True Single Phase Clock (E-TSPC) logic","authors":"A. Bazzazi, A. Nabavi","doi":"10.1109/ELECTRO.2009.5441145","DOIUrl":"https://doi.org/10.1109/ELECTRO.2009.5441145","url":null,"abstract":"This paper presents the design of a 10GHz divider using Extended True Single Phase Clock (E-TSPC) logic on a 0.18µm CMOS technology with 1.8V supply voltage. This divider contains D-Flip flop with dynamic structure that is based on the ÷2 divider and ÷8/9 dual modulus prescaler. By optimizing the transistor size in each divider stage and inserting optimized buffers between the stages, the power and area are minimized. The results of post-layout simulation compared to similar reported ones illustrate significant improvement. The power consumption of ÷2 divider and ÷8/9 dual modulus prescaler are 320 µw and 850 µw, respectively. High speed low power and smaller area are properties of this design.","PeriodicalId":149384,"journal":{"name":"2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114921274","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: 7
Statistical modelling of wavelet coefficients of CT scan image CT扫描图像小波系数的统计建模
2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems Pub Date : 2009-12-01 DOI: 10.1109/ELECTRO.2009.5441146
B. Kumar, S.P. Singh, A. Mohan, A. Anand, H. Singh
{"title":"Statistical modelling of wavelet coefficients of CT scan image","authors":"B. Kumar, S.P. Singh, A. Mohan, A. Anand, H. Singh","doi":"10.1109/ELECTRO.2009.5441146","DOIUrl":"https://doi.org/10.1109/ELECTRO.2009.5441146","url":null,"abstract":"Prior knowledge of wavelet coefficient statistics is a key issue in the development of better quantization strategy for enhancing compression efficiency of digital images. Since statistics of medical images are quite different from those of natural images, there is a need for statistical modelling of wavelet coefficients in different subbands. This paper examines the suitability of Student-t, Pareto Weibull and Gaussian distributions for modelling the wavelet coefficients of various subbands in a CT scan image to improve the compression efficiency. It has been found that the statistics of wavelet coefficients in the CT scan images can be better approximated by the generalized Student-t distribution for negative wavelet coefficients whereas generalized Pareto distribution provides better fit for the non-negative coefficients. The results can be potentially useful in designing adaptive quantizer for achieving improved compression gain and reducing computational complexity for medical image coders.","PeriodicalId":149384,"journal":{"name":"2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116384213","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
Transmission characteristics of rectangular dielectric guide in the millimeter wave region with embedded metallic discontinuities 矩形介质波导在嵌入金属不连续面毫米波区域的传输特性
2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems Pub Date : 2009-12-01 DOI: 10.1109/ELECTRO.2009.5441098
J. Sharma, Dhirendra Kumar, A. De
{"title":"Transmission characteristics of rectangular dielectric guide in the millimeter wave region with embedded metallic discontinuities","authors":"J. Sharma, Dhirendra Kumar, A. De","doi":"10.1109/ELECTRO.2009.5441098","DOIUrl":"https://doi.org/10.1109/ELECTRO.2009.5441098","url":null,"abstract":"In this paper, the investigations of the rectangular dielectric waveguides with embedded metallic discontinuities in millimeter waves (70–130 GHz) region have been presented. The full wave simulation of the structure has been carried out using frequency division time domain method. The frequency response of the structure shows that it can be used in designing of a dielectric filter in the given frequency range. The graphical representations of scattering parameters have been given for different values of the height of the dielectric rod and for the changes in the permittivity of the rod.","PeriodicalId":149384,"journal":{"name":"2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121948475","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
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