集成pH－ISFET／压力传感器的研究

基于ＳＤＢ／ＳＯＩ材料和硅微机械加工技术，提出了一种含微参比电极和择优差分补偿单元的背面引线ＰＨ－ＩＳＦＥＴ／压力传感器的新结构。并且设计了高稳定的可调芯片自恒温系统，以减少硅材料对温度敏感的效应。这种结构既方便地实现敏感元和信号处理电路的完全隔离，又有效地改善了敏感特性和稳定性。初步实验结果证实了新结构设计是成功的。     

CIMS中的集成支撑技术

本文简要地论述了信息集成是实现ＣＩＭＳ集成的核心，着重阐述了支持信息集成的主要技术，它们包括网络技术、分布式数据库技术、ｃ／ｓ体系结构、中间件及分布计算环境等。     

深亚微米薄膜CMOS／SOI电路的集成器件线路模拟

开发了适用于薄膜亚微米、深亚微米ＣＭＯＳ／ＳＯＩ电路的集成器件线路模拟软件，该模拟软件采用集成数值模型，将薄膜ＳＯＩ器件的数值模拟与电路模拟有机地结合在一起，实现了薄膜亚微米、深亚微米ＣＭＯＳ／ＳＯＩ电路的精确数值模拟，利用这一软件较为详细地分析了硅层厚度为５０￣４００ｎｍ、沟道长度为０．１５￣１．０ｕｍ的ＣＭＯＳ／ＳＯＩ环形振荡器电路，使我们对深亚微米薄膜ＣＭＯＳ／ＳＯＩ环振的特性及工作机理了较     

新型微流通池pH—ISFET集成传感器

设计与制备了带Ｔｉ／Ａｕ膜参考电极的长臂式ＰＨ－ＩＳＦＥＴ集成传感器与微流通池。在静态和流动分析系统测量中表明：由蠕动泵驱动的待测流动极畅，且试样量极少，响应速度快。     

新型微流通池pH－ISFET集成传感器

设计与制备了带Ｔｉ／Ａｕ膜参考电极的长臂式ｐＨ－ＩＳＦＥＴ集成传感器与微流通池。在静态和流动分析系统测量中表明：由蠕动泵驱动的待测液流动极畅，且试样量极少，响应速度快。     

FANS1—值得借鉴的CNS／ATM机载系统

介绍了波音７４７－７００飞机ＦＡＮＳＩ系统的构成、功能及其相关的地／空通信结构。ＦＡＮＳＩ是符合ＣＮＳ／ＡＴＭ系统要求的新型机载系统，具有ＧＰＳ导航、ＡＴＣ数据链通信和ＡＤＳ等功能，它的出现，对我国新航行系统机载设备的研制有较大的指导作用。     

一种高效地实现运动估计算法的VLSI结构

本文提出了一种全新的低延滞、高吞吐率、可编程的ＶＬＳＩ树型结构，它能十分有效地实现ＦＳＡ和ＴＳＳＡ运动估计算法。该结构比其它树型结构少１／３的处理单元（ＰＥ），而且ＰＥ单元的延时减少一半。独特的ＭＥ窗缓冲结构使Ｉ／Ｏ带宽和Ｉ／Ｏ管脚大大减小，交叉流水线技术使硬件利用率可达到１００％。这些特点使得该结构适合ＶＬＳＩ实现。     

ISDN的新应用——AO／DI

介绍了一种利用ＩＳＤＮ技术开发出来的新应用－常久在线／动态ＩＳＤＮ（ＡＯ／ＤＩ），它是利用ＩＳＤＮ本身的特点实现用户与ＩＳＰ的“专线”连接。     

ISO／IEC导则第1部分修改草案拟就

ＩＳＯ／ＩＥＣ导则第１部分修改草案拟就ＩＳＯ、ＩＥＣ将对ＩＳＯ／ＩＥＣ导则第１部分进行修改，并出版第３版本。１９９４年年底，ＩＳＯ、ＩＥＣ已将第３版草案发往各国家委员会，要求各成员对草案提出意见和投票表决。修改的主要内容有：（１）对新工作项目给出了明...     

二十一世纪的生产力促进技术——CIMS

介绍了ＣＩＭＳ的历史、现状及其典型构成，分析了ＣＩＭＳ的特点，阐述了我国企业实施ＣＩＭＳ的可行性和必要性，提出了一些我国企业实施ＣＩＭＳ时应注意的问题。     

高性能新结构InGaP/GaAs异质结双极型晶体管

报道了一种采用U形发射极新结构的高性能InGaP/GaAs HBT.采用自对准发射极、LEU等先进工艺技术实现了特征频率达到108GHz,最大振荡频率达到140GHz的频率特性.这种新结构的HBT的击穿电压达到25V,有利于在大功率领域应用.而残余电压只有105mV,拐点电压只有0.50V,使其更适用于低功耗应用.同时,还对比了由于不同结构产生的器件性能的差异.     

Characteristics of a novel biaxial capacitive MEMS accelerometer

A novel MEMS accelerometer with grid strip capacitors is developed.The mechanical and electrical noise can be reduced greatly for the novel structure design.ANSOFT-Maxwell software was used to analyze the fringing electric field of the grid strip structure and its effects on the designed accelerometer.The effects of the width,thickness and overlapping width of the grid strip on the sensing capacitance are analyzed by using the ANSOFT-Maxwell software.The results show that the parameters have little effect on the characteristics of the presented accelerometer.The designed accelerometer was fabricated based on deep RIE and silicon-glass bonding processes.The preliminary tested sensitivities are 0.53 pF/g and 0.49 pF/g in the x and y axis directions,respectively.A resonator with grid strip structure was also fabricated whose tested quality factor is 514 in air,which proves that the grid strip structure can reduce mechanical noise.     

高性能新结构InGaP/GaAs异质结双极型晶体管

报道了一种采用 U形发射极新结构的高性能 In Ga P/ Ga As HBT.采用自对准发射极、L EU等先进工艺技术实现了特征频率达到 1 0 8GHz,最大振荡频率达到 1 4 0 GHz的频率特性 .这种新结构的 HBT的击穿电压达到 2 5 V,有利于在大功率领域应用 .而残余电压只有 1 0 5 m V,拐点电压只有 0 .5 0 V,使其更适用于低功耗应用 .同时 ,还对比了由于不同结构产生的器件性能的差异     

A novel compact electromagnetic-bandgap (EBG) structure and its applications for microwave circuits

A novel electromagnetic-bandgap (EBG) structure in a fork-like shape is investigated. This structure has an extremely compact size. A comparison has been carried out between the new structure and the conventional mushroom-like EBG structure. Simulations and experimental results have verified that the area of the fork-like structure is less than 40% of the latter. The presented structure also provides an additional degree of freedom to adjust the bandgap position, which is applied to design a novel reconfigurable multiband EBG structure. Several application examples have been demonstrated, including a double-element microstrip antenna array with low mutual coupling, notch-type antenna duplexer, and steerable array with a linearly discrete beamsteering of 20/spl deg/ in steps of 10/spl deg/ at 2.468 GHz.     

A novel ultraflattened dispersion photonic Crystal fiber

A novel four-ring photonic crystal fiber (PCF) structure with two different air-hole sizes is proposed with nearly zero ultraflattened dispersion characteristics. Through optimizing only three geometrical parameters, two air-hole diameters, and one hole pitch, the ultraflattened zero dispersion PCF can be efficiently designed. As an example, a four-ring PCF with flattened dispersion of /spl plusmn/0.25 ps/km/nm from 1.295- to 1.725-/spl mu/m wavelength is numerically demonstrated. The corresponding design procedures for the novel PCF are also presented in this letter.     

A novel CMOS hairpin resonator using slow-wave structure

A novel hairpin resonator incorporating a defective uniplanar compact photonic bandgap (D-UCPBG) slow-wave structure has been developed using monolithic silicon-based CMOS technology and the impact of the D-UCPBG slow wave feature on the hairpin resonator performance is presented. Two stepped impedance hairpin resonators of equal dimensions, one with a solid ground plane and another with a D-UCPBG structure, were implemented in the TSMC 0.25 /spl mu/m RF-mixed signal fabrication process. The D-UCPBG incorporated hairpin resonator resonates at 4.5 GHz, a significant frequency reduction from 10.2 GHz, the resonant frequency of the solid ground plane based hairpin resonator. The loaded Q of the resonator also increases from 5.8 for the solid ground plane resonator to 13 for the D-UCPBG structure.     

一种新型OFDM前导符号频域结构设计及其接收算法

文章对OFDM广播系统中前导符号的频域结构进行了研究,提出了一种固定序列和信令序列奇偶交错排列的新结构,其中固定序列可用于整数倍频偏估计和信道估计,信令序列用于承载信令内容。基于该结构,给出了一个前导符号频域的具体方案与参数。还介绍了适用于该种结构的接收算法,并基于上述参数与算法进行了仿真试验。仿真结果表明,该种前导符号频域结构具有优异的检测与解码性能,能够适用于各类固定及移动场景。     

Broadband tapered microstrip leaky-wave antenna

This study proposes a novel scheme based on the characteristics of leaky-wave antennas for the empirical design of broadband tapered microstrip leaky-wave antennas. This scheme can explain and approximately model the radiation characteristics of a linearly tapered leaky-wave microstrip antenna. A broadband feeding structure that uses the balanced and the inverted balanced microstrip lines to form a pair of broadband baluns is also presented. The measured return loss of the inverted balanced microstrip lines has a VSWR/spl les/2 from dc to 18.6 GHz and that of the back-to-back feeding structures has a VSWR/spl les/2 from 2.2 to 18.6 GHz. This feeding structure can be used to feed a broadband planar leaky-wave antenna with a fixed mainbeam that uses the tapered microstrip structure. The measured bandwidth of the antenna for a VSWR/spl les/2 exceeds 2.3:1.     

基于双悬臂梁结构的光纤加速度传感器

为消除悬臂梁结构加速度传感器由于光纤表面粘贴产生的啁啾现象,增强横向抗干扰能力,提高共振频率,提出了一种基于双悬臂梁结构的光纤加速度传感器。给出了理论分析结果,建立了有限元模型,得到了加速度灵敏度表达式,并且探讨了在共振频率不变的情况下提高加速度灵敏度的方法。实验结果表明,该传感器在6～50 Hz内频响平坦,加速度灵敏度为14pm/g,抗横向干扰能力达20dB,与理论计算较好地吻合。