查询词典 antenna array

In Chapter 4,further theoretical study on UWB biconical antenna and V-coni-cal antenna is presented.The theory of biconical and V-conical antenna with ellipticcross section is developed in the sphro-cone coordinate system under the assump-tion of TEM mode.

第四章研究UWB/SP的辐射天线，对双锥天线及V—锥天线在理论上作更进一步的研究，发展了无穷长双椭圆锥天线的理论提出了一种新天线结构形式-V椭圆锥天线。

A kind of best baffle-beard suitable for applications in the dual-frequency base station antenna is presented, meanwhile, we adopt the PSO algorithm to optimize the parameters affecting antenna pattern such as the phase of the elements, the space between the elements, such that the pattern of antenna can be shaped in the vertical plane （the pattern in the vertical plane has Cosecant beam in the service area）.

针对我国移动通信频率，以基站天线的双频工作以及阵列波束赋形为目标，设计了一种满足基站天线双频辐射要求的最佳反射板形状，并通过PSO全局优化算法优化各单元馈电相位并调整其间距以实现垂直面方向图双频波束赋形的目的（即垂直面方向图在所覆盖的服务区域内具有余割波束）。

The working situation of whole system and antenna have been analyzed and tested, the results show the main p roperty of antenna meet to design and application requirements, which can be used to practical exporation. The evaluation results of borehole radar systemps detection ability and application prospect using this antenna show the detection distance of borehole radar system in granite and limestone is several decameter to 100 m.

分析检验了整个系统和天线的工作状况，实验表明天线主要性能满足设计和工程应用要求，可应用于实际勘探；并对采用本天线的钻孔雷达系统的探测能力和应用前景进行了评估，钻孔雷达系统在花岗岩、石灰岩等岩层中的探测距离可到几十米至100 m。

Experiment results show that equiangular spiral antenna basked EBG structure has a wider frequency bandwidth, higher gain, and larger front-to-back ratio than a traditional spiral antenna with ground plate; and also the thickness of antenna is reduced obviously.

实验结果表明，背衬EBG材料的等角螺蜷天线与传统的带反射板的等角螺蜷天线（辐射器离反射板的高度为λ／4）相比能够同时提高增益、展宽带宽、改善前后辐射比，并且显著减薄天线的厚度。

The antenna access for the device is under the flip-up antenna and I am already concerned about the longevity of the card as looking down into the antenna port hole I do not see a lot of supporting material in and around the connection.

天线准入器下翻盖了天线和关心我已经长寿的卡俯视港口进入天线孔我看不出有很多方面和周围的物质支撑。

Finally, it analyses the time complexity of the algorithm and researches how it is influenced by culture operator.3、The paper presents the evaluation standard of the GA's application capability. Basing on characters such as continuity, multi-peak, vibration, randomicity as well as large-scale, five functions are selected to test search ability and robustcity of co-evolution algorithm. Finally, it analyses the simulation result and researches the influence of algorithm brought by culture operators.4、Basing on the concept of collection overcast, it researches the task distribution issue and constitutes delaminated math model on task distribution issue. It puts out the co-evolution algorithm of subtask's decomposing. The experiment compare IGA、SGA to CN and validates the efficiency of co-evolution algorithm on the NP completeness issue.5、Being aim at the optimization issue of load of antenna near ground, it combines many GA strategies and puts forward strategic meme. And it puts out co-evolution algorithm of load of antenna design. And it emulates the optimization design of load of antenna near ground. Finally, it valuates the co-evolution algorithm's efficiency on the continuum search issues of multi-variable and multi-peak value.6、Being aiming at the knowledge of image model matching, it adopts single meme and real code. It puts out fast co-evolution matching algorithm strategy. Basing on NPROD resemble measurement, I emulate the indiscrimination model matching and discrimination model matching. Finally, it valuates the co-evolution algorithm's efficiency on the real code and real time search issue.

分析了算法的时间复杂度，研究了文化算子对算法时间复杂度的影响。3、提出了GA的应用性能评价标准，从连续性、多峰性、随机性、振荡性、广域性多个角度出发选择五个测试函数，对共同进化算法的搜索性能和鲁棒性作了函数优化的性能测试，分析了仿真结果，研究了文化算子对算法的影响。4、基于集覆盖的概念，研究了MAS中的任务分配问题，建立了任务分配问题的分层数学模型，给出了子任务分解共同进化算法，实验比较了IGA、SGA、CN，验证了共同进化算法对NP完全问题的有效性。5、针对近地天线加载优化设计问题，结合多种改进GA策略，提出了策略型拟子，给出天线加载设计的共同进化算法，对有耗半空间对称偶极子天线加载优化设计作了仿真实验，验证了共同进化算法对多变量多峰连续搜索问题上的有效性。6、针对图像模板匹配问题的领域知识，采用单类拟子和实数编码，给出快速共同进化匹配算法策略，基于NPROD相似度测度，仿真试验了无差别和有差别模板匹配，验证了共同进化算法对实数编码和实时性搜索问题上的有效性。

It proposed the method of adjustment and optimization of the peripheral truss net surface integrating distance weighted factor and the genetic algorithm based on-orbit thermal environment for the first time, Optimization adjustment simulation of the net surface has been carried based on-orbit thermal environment for the large deployable antenna.The research of thermal analysis technology in this article would provide more scientific foundation for thermal design of antenna on satellite, it would greatly improved thermal design level for satellite antenna of our country, the thermal optimize design which were based on those would effective reduce the costs of test.

本文所完成的热分析技术的研究能够为星载天线的热设计提供更科学的依据，可大大提高我国星载天线热分析的水平，以此为基础的热优化设计可以有效的减少试验费用。

The present invention provides an antenna coupling preventing system and method capable of minimizing coupling between a GPS antenna and a CDMA antenna.

公开一种移动通信终端的天线耦合防止设备及其方法，该设备具有GPS天线和CDMA天线，根据工作模式，接收GPS信号和CDMA信号。

At first, four analysis approaches of microstrip antenna are involved, then radiation principle of rectangular microstrip patch antenna by transmission line model theory which brings the design formula of rectangular microstrip patch antenna.

本文首先介绍了微带天线的四种分析方法，其中重点阐述了利用传输线法分析矩形微带贴片天线的辐射原理特性，由此给出了设计矩形微带贴片天线的设计公式。

Wire gauze ; mesh-reflector antenna ; weaving structure ; deployable antenna ; space-borne antenna

金属丝网布；网状天线；编织结构；可展开天线；星载天线

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。