8～16GHzGaAs单片宽带分布放大器

报道了８～１６ＧＨｚＧａＡｓ单片宽带分布放大器的设计与制作。单级ＭＭＩＣ电路采用三个栅宽为２８０μｍ的ＧａＡｓＭＥＳＦＥＴ作为有源器件，芯片尺寸为１．１ｍｍ×１．６ｍｍ。在８～１６ＧＨｚ频率范围，用管壳封装的两级级联放大器增益Ｇ＿ａ，为１１．３±１ｄＢ，噪声系数Ｆ＿ｎ＜６ｄＢ，输出功率Ｐ＿（１ｄＢ）＞１６ｄＢｍ。     

解线性及二次型规划问题增广的神经网络

本文提出了一个解线性及二次型规划问题的神经网络模型，证明了该网络是全局稳定于平衡点，而平衡点就是线性及二次型规划问题的解，该网络的优点是能够实时获得问题的精确解，且可以同时获得带等式不式约束的对偶问题解，该网络易于电路实现。     

LIGA技术的掩模制造

ＬＩＧＡ技术是近几年才发展起来的一门新的技术，包括光刻、电铸和塑铸。由于要进行深度Ｘ光曝光，所用的同步辐射Ｘ光较硬，这一曝光条件相应就需要Ｘ光掩模吸收全有较大厚度和较高的加工精度，这样才能够阻档住Ｘ光，同时保证较高的光刻精度。     

Field theory of dielectric Cherenkov maser

The effect of three-dimensional perturbed velocity and three-dimensional perturbed current density on the beam-wave interaction of dielectric Cherenkov maser is analysed by use of the self-consistent linear field theory. Three distinct cases are considered. First, the propagation of the electron beam in an annular dielectric liner enclosed by a loss-free conducting wall is investigated. The dispersion equation and the simultaneous condition of the beam-wave interaction are derived. It's clearly shown that the instability of the interaction results from the coupling of the TM mode in the dielectric lined slow-wave waveguide to the beam mode via the electron beam. And the coupling is proportional to the density of the beam. The growth rate of the wave produced by the electron beam are obtained. Then, the case of a relativistic electron beam guided by a longitudinal magnetic field in the same slow-wave structure is examined. The motion of electrons could be approximated to be one-dimensional when the simultaneous condition of the beam-wave interaction of dielectric Cherenkov maser is satisfied. Finally, the effect of the background plasma on the instability of the beam-wave interaction is studied.     

Cherenkov radiation with arbitrary azimuthal mode number excited in a plasma-filled slow-wave waveguide

On the basis of the reference [1], excitation of Cherenkov radiation with arbitrary azimuthal mode number by a thin annular relativistic electron beam in a plasma-filled dielectric-lined slow-wave waveguide is studied in this paper. A determinantal dispersion equation is obtained. This general dispersion equation is valid for arbitrary azimuthal mode number, and the growth rate of the wave is derived from it. Finally, the effects of the background plasma density on the dispersion relation, the background plasma density and the electron beam radius on the growth rate of the wave are presented. Formulas and results offerd in this paper are general, and are of particular value of reference to the beam-wave interaction in azimuthally unsymmetrical slow-wave waveguide.     

红外警戒系统目标识别方法的研究

讨论了红外警戒系统目标识别的方法。由于目标和背景杂波在特征上既有区别又有相似之处，采用单一的识别手段无法达到满意的性能，只有在空间、时间和光谱域内采用多种手段，才能逐渐排除杂波，获取真正的威胁目标。     

毫米波矩形介质波导传播特性的FDTD分析

采用ＦＤＴＤ法分析了矩形介质波导的传播特性，与其它方法相比，它不受材料介电常数大小的限制，即使在较高分电常数情况下，也能获得满意的结果；同时作为全波分析方法，ＰＤＴＤ法能方便地求得波导中存在的各个模式的传播常数及其横截面场分布．     

氦氖激光管的工作寿命特性的研究

本文在理论上从电子元器件的特征寿命η所服从的逆幂律，分析导出了描述氦氖激光管工作寿命的以时间ｔ为自变量的威布尔分布函数；用图估和最好线性无偏估计（ＢＬＵＥ）两种方法处理寿命试验数据，结果都证实了氦氖激光管的工作寿命（特征寿命）服从逆幂律；最后给出了这种氦氖激光管的逆幂律方程式。     

用单透镜变换由多模光纤出射的大功率Nd：YAG激光束的特性

根据理论假设，通过选取单透镜的参数和位置，计算说明了单透镜使经由多模光纤出射的大功率Ｎｄ：ＹＡＧ激光束的发射角压缩，光束聚焦效率提高，光束截面场为高斯分布；文中的计算结果符合已知规律，从而说明了理论假设的正确性。     

可调谐脉冲钛宝石光纤激光器

报道了用脉冲调Ｑ－Ｎｄ：ＹＡＧ激光器倍频泵浦的掺钛宝石光纤激光器。在一根φ３５０μｍ×１１．２ｍｍ的光纤中获得了０．５ｍＪ的泵浦阈值、１５μＪ的输出能量以及５６．５ｎｍ的调谐范围。