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LiNbO_3 Self-Aligned Ridge Waveguide with Dielectric Side Buffers

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光学学报 2003年第S1期23卷 211-212页

作者： Young-Bo Cho Hyung-Gi Jung Sang-Yung Shin dept. eecs Korea Advanced Institute of Science and Technology 373-1 Kusong-dong Yusong-gu Dae jeon. Republic of KoreaDept. EECS Korea Advanced Institute of Science and Technology 373-1 Kusong-dong Yusong-gu Dae jeon. Republic of KoreaDept. EECS Korea Advanced Institute of Science and Technology 373-1 Kusong-dong Yusong-gu Dae jeon. Republic of Korea

A simple fabrication method of self-aligned ridge waveguides with dielectric side buffers is demonstrated on +Z-cut LiNbO3. The ridge waveguide is fabricated by a combination of the annealed proton exchange process an... 详细信息

关键词： with of it In is LiNbO3 Self-Aligned Ridge Waveguide with Dielectric Side Buffers have Cr for been APE length

Vertically Integrated Thermo-Optic Waveguide Switch Using Optical Polymers

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光学学报 2003年第S1期23卷 359-360页

作者： Ki-Hong Kim Sang-Yung Shin Doo-Sun Choi dept. of eecs Korea Advanced Institute of Science and Technology 373-1 Kusong-dong Yusong-gu Daejeon Republic of Korea.Dept. of EECS Korea Advanced Institute of Science and Technology 373-1 Kusong-dong Yusong-gu Daejeon Republic of Korea.Dept of. Intelligence and precision machine Korea Institute of Machinery and Materials 171 Jang-dong Yusong-gu Daejeon Republic of Korea.

We propose and fabricate a vertically integrated thermo-optic waveguide switch. It controls the optical path between two vertically stacked waveguides using the thermo-optic effect of optical polymer. The measured cro... 详细信息

关键词： mode in heat it than Vertically Integrated Thermo-Optic Waveguide Switch Using Optical Polymers of

基于多维观测特征的MF-HMM模型识别新型LDoS驱动的高分散低速率QoS侵犯

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四川大学学报（工程科学版） 2015年第1期47卷 42-48页

作者：康健杨媚 ZHANG Junyao 吉林大学计算机科学与技术学院吉林大学软件学院 dept. of eecs Univ. of Central Florida Orlando FL 32816USA

针对新型LDo S驱动的高分散低速率Qo S侵犯,提出一种新颖的基于网络微观和宏观多维特征的识别方法。在网络微观方面,加权计算了反应TCP包头内部微观变化的Flag控制位,以及计算了反应LDo S固有周期特性的I-I-P 3元组的功率谱密度PSD特征... 详细信息

针对新型LDo S驱动的高分散低速率Qo S侵犯,提出一种新颖的基于网络微观和宏观多维特征的识别方法。在网络微观方面,加权计算了反应TCP包头内部微观变化的Flag控制位,以及计算了反应LDo S固有周期特性的I-I-P 3元组的功率谱密度PSD特征;在网络宏观方面,引入反应网络发送流和确认流比值变化的R特征,共同构成多维观测序列,采用多维隐马尔科夫混合模型multi-stream fused HMM(MF-HMM)自动识别Qo S侵犯。同时,应用Kaufman算法动态调整阈值。大量实验表明,提出的方法有效降低了识别的误报率和漏报率,特别针对新型LDo S驱动的高分散低速率Qo S侵犯,在复杂网络背景流量下依然具有很高的识别率。

关键词： multi-stream fused HMM 网络Qo S 功率谱密度PSD Kaufman算法

Extension of Range Migration Algorithm for Airborne Spotlight SAR with Velocity Variation

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Extension of Range Migration Algorithm for Airborne Spotligh...

2007 Asian and Pacific Conference on Synthetic Aperture Radar(APSAR 2007)

作者： Hee Sub Shin Jae Han Jeon Ho Jin Lee Jong Tae Lim dept.of eecs and Radiowave Detection Research Center

To obtain the SAR images with high quality and the fast processing time in the airborne spotlight SAR with velocity variation,we propose a modified range migration algorithm （RMA） with resampling based on the extended Taylor approximation and the fast interpolation process. First,at the mixing stage of the reference signal and the raw data,we resample the azimuth position. Then,at the Stolt interpolation stage,we modify the original interpolation method. Finally,we test the effectiveness of the proposed method using a pulsed spotlight SAR simulator.

关键词： Interpolation Synthetic aperture radar Aircraft Layout Chirp Approximation algorithms Azimuth Testing Image resolution Frequency domain analysis

Throughput Enhancement for Short Packets in the Wireless Packet Networks

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Throughput Enhancement for Short Packets in the Wireless Pac...

第七届国际信号处理会议

作者： Yeong-Hyeon Kwon Mi-Kyung Oh Dong-Jo Park dept. of Electrical Engineering and Computer Science （eecs） Korea Advanced Institute of Science and Technology （KAIST） 373-1 Guseong-dong Yuseong-gu Daejon 305-701 Republic of Korea dept. of Electrical Engineering and Computer Science （eecs） Korea Advanced Institute of Science and Technology （KAIST） 373-1 Guseong-dong Yuseong-gu Daejon 305-701 Republic of Korea dept. of Electrical Engineering and Computer Science （eecs） Korea Advanced Institute of Science and Technology （KAIST） 373-1 Guseong-dong Yuseong-gu Daejon 305-701 Republic of Korea

We propose a novel transmission scheme suitable for short packet transmission over wireless channels. The proposed scheme is characterized by two schemes: 1) multicopy trans- mission per transmissi

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A FOLDED CASCADED OPERATIONAL TRANSCONDUTANCE AMPLIFIER WITH A POSITIVE FEEDBACK DESIGNED IN 2 MICRO CMOS TECHNOLOGY

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A FOLDED CASCADED OPERATIONAL TRANSCONDUTANCE AMPLIFIER WITH...

The Third International Conference on Solid State and Integrated Circuit Technology

作者： PAUL R.GRAY dept.OF eecs UNIVERSITY OF CALIFORNIA BERKELEY CA-94720 USA

＜正＞ An operational transconductance amplifier with a positive feedback has been designed in 2 micro CMOS *** resimulation with extracted data this OTA shows a good *** has a slew rate greater than lOV/us,settling time less than 200ns,dynamic range at output equal to 4V with a single supply voltage of *** open-loop gain of this circuit is greater than *** power dissipation is 3.5mw and chip size is 0.068mm *** OTA has a biasing which is less dependent of supply voltages.

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电磁场数值模拟TLM算法及其应用

电讯技术 2002年第5期42卷 59-65页

作者：张虹王庆康徐勤卫上海交通大学微纳米科学技术研究院上海200030 eecs dept.University of Michigan annarbormi48109

传输线矩阵 (TLM)算法是基于Huygens的波传播模型 ,与计算机结合起来后 ,成为一种强有力的三维时域电磁场数值仿真算法。在 1971年TLM被首次提出以后 ,便得到不断的改进 ,从二维到三维 ,从扩展型结点到凝缩型结点 ,从时域TLM到频域TLM ... 详细信息

传输线矩阵 (TLM)算法是基于Huygens的波传播模型 ,与计算机结合起来后 ,成为一种强有力的三维时域电磁场数值仿真算法。在 1971年TLM被首次提出以后 ,便得到不断的改进 ,从二维到三维 ,从扩展型结点到凝缩型结点 ,从时域TLM到频域TLM ;而其应用也从最初的处理电磁场问题发展到对微波电路的模拟、高速IC的设计 ,以及处理光学、机械学、热学和声学问题。本文详细介绍了二维、三维空间的TLM算法、扩展型结点和几种改进的对称凝缩结点 ,阐述了TLM在各领域的应用。

关键词：电磁场数值模拟 TLM算法传输线矩阵网格支线

Fabrication of the Tile Type Transceiver Module package for X-Band Phase Array Radar Using Selectively Anodized Aluminum Substrate

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Fabrication of the Tile Type Transceiver Module package for ...

2007 Asian and Pacific Conference on Synthetic Aperture Radar(APSAR 2007)

作者： Jong-Hoon Chun Sung-Ku Yeo Young-Se Kwon SAMSUNG-THALES Co. LTD.Yongin-CityGyeonggi-Do449-885Republic of Korea dept.eecs KAIST 373-1Guseong-dongYuseong-guDaejeon305-701Republic of Korea

In this paper,we proposed a tile type transceiver module package for X-band phase array radar system using a selectively anodized aluminum substrate. The proposed solution of package is based on thick anodized aluminum oxide （Al2O3） layers and bare chips mounted on aluminum for an effective heat sink. This package method can be further contributed to decreasing cost,reducing module size and managing thermal problem for the microwave high power T/R modules.

关键词： a selectively anodized aluminum substrate tile type package aluminum oxide (Al2O3) T/R modules