| 1. | Analyses and design of a multi - beam planar array antennas
一种多波束面阵天线的分析与设计 |
| 2. | Lead in solders for the soldering to machined through hole discoidal and planar array ceramic multilayer capacitors
通孔盘状及平面阵列陶瓷多层电容器焊料所含的铅。 |
| 3. | The research of adaptive digital beamforming ( adbf ) system for 2d planar array will be one of the emphases of digital radar
二维面阵收发自适应数字波束形成系统的研究将是今后数字化雷达研究的热点之一。 |
| 4. | A measuring system for calibrators of headlamp tester for motor vehicle using planar array ccd as detector is introduced in the paper
本文介绍了一种采用面阵ccd成像技术作为测试方法的汽车前照灯检测仪远近光校准器检定系统。 |
| 5. | This paper has successfully adopted the above method to synthesize an equally - spaced linear array , and then has extended its application into the synthesis of shaped beam patterns from planar arrays
本文正是采用此方法首先得到了线阵综合的结果，并将它推广运用到面阵综合的情形。 |
| 6. | In this article , method of moment ( mom ) and floquet mode ( fm ) method will be applied to analysis the radiation and scattering of planar array and curved array
本文分别采用比较经典的低频方法?矩量法和一种专用于阵列分析的高频方法? floquet模( fm ， floquetmode )方法对有限阵列电磁散射特性进行分析。 |
| 7. | When a cluster of particles is immersed in a uniform electric field , the particles are coupled together due to the mutual interaction among them . this interaction causes the dipole moment of the cluster to be dependent upon the spatial arrangement and relative permittivity of the particles and upon the cluster size . in this work , we attempt to estimate the dipole moment of finite cubic arrays of particles , in terms of that of particle chains which has been known . we assume that a chain may be replaced by a single equivalent sphere with the same dipole moment . with replacing the chain by equivalent sphere , a cluster is simplified to a planar array , and this planar array is simplified to a chain , then the dipole moment is obtained . numerical calculations are performed . it is found that our results are acceptable
置于均匀电场中的一簇球形颗粒，由于其内部的相互作用而耦合在一起.这致使簇的感应偶极矩与簇的几何结构，大小以及颗粒的介电常数等参量有关.试图通过已知的链的偶极矩确定任意大小长方结构的簇的偶极矩.假定颗粒链可以被具有同样偶极矩的一个等效介质球代替，并将具有空间结构的颗粒簇处理成面结构簇，再将面结构简化成一个颗粒链，从而确定簇的偶极矩.在这一过程中，通过不断增加等效球的尺寸，将颗粒间的相互作用包含在簇的偶极矩中.数值分析了立方结构簇的偶极矩，结果是可接受的 |
| 8. | First , based on phased array antenna ' s mono - pulse goniometry and separate coordinate technology about phase control , the antenna beam pointing error formula , caused by phase quantization error , is derived from linear array and circular array to planar array and cylindrical array
首先以单脉冲相控阵天线测角原理为基本理论出发点，利用相位控制的坐标分离技术，基于线阵、圆形阵等简单形式的相控阵天线，推导了平面阵、圆柱面阵等相控阵天线由相位量化误差引起的波束指向误差公式。 |
| 9. | Dbf algorithms for 2d planar array based on the algorithms for 1d array are discussed in this paper . the author ' s main contributions include research of the adaptive digital beamforming algorithm , which control both amplitude and phase of each array element : diagonal loading qrd - smi algorithm . research of two phase - only dbf algorithms : small phase perturbation restriction algorithm and maximum gain of the expected direction restriction algorithm
面阵的数字波束形成算法是面阵dbf技术的关键，本文在现有的一维数字波束形成算法基础上，研究了二维面阵的数字波束形成算法，主要工作有：面阵的幅度相位全控制自适应数字波束形成算法? ?对角加载qrd - smi算法的研究；两种面阵唯相位( phase - only )数字波束形成算法? ?小相位扰动约束算法和期望方向增益最大约束算法的研究；面阵的数字多波束形成算法? ?二维fft多波束的研究，以及fft在可编程逻辑器件中的实现。 |
| 10. | Abstract : when a cluster of particles is immersed in a uniform electric field , the particles are coupled together due to the mutual interaction among them . this interaction causes the dipole moment of the cluster to be dependent upon the spatial arrangement and relative permittivity of the particles and upon the cluster size . in this work , we attempt to estimate the dipole moment of finite cubic arrays of particles , in terms of that of particle chains which has been known . we assume that a chain may be replaced by a single equivalent sphere with the same dipole moment . with replacing the chain by equivalent sphere , a cluster is simplified to a planar array , and this planar array is simplified to a chain , then the dipole moment is obtained . numerical calculations are performed . it is found that our results are acceptable
文摘:置于均匀电场中的一簇球形颗粒，由于其内部的相互作用而耦合在一起.这致使簇的感应偶极矩与簇的几何结构，大小以及颗粒的介电常数等参量有关.试图通过已知的链的偶极矩确定任意大小长方结构的簇的偶极矩.假定颗粒链可以被具有同样偶极矩的一个等效介质球代替，并将具有空间结构的颗粒簇处理成面结构簇，再将面结构简化成一个颗粒链，从而确定簇的偶极矩.在这一过程中，通过不断增加等效球的尺寸，将颗粒间的相互作用包含在簇的偶极矩中.数值分析了立方结构簇的偶极矩，结果是可接受的 |
