查询词典 in-line antenna

The antenna is a necessarily important component in Radar system,whose stealth is a problem that puzzled the technology researchers all the while.The flight vehicle needs antenna to find its aim when reentering the aerosphere,and it also needs the protection by radome at the same time.

天线是雷达系统中必不可少的重要组成部分，其隐身是一个长期困扰着工程技术人员的问题，飞行器再入大气层时需要靠雷达天线来搜寻目标，雷达天线则需要天线罩来保护。

As these clamps are plastic, they will not interfere with the operation of the antenna, while all-metal mounts placed in the radiation pattern could affect the operation of the antenna.

因为这些卡子是塑料的，所以它们不会对天线造成干扰，而所有金属托架都会影响天线的辐射。

According to the theory of electromagnetic field and the theory of error a nalysis,the far field condition for antenna test is discussed,the influence of limited test distance on antenna far field measurement in a microwave anechoic chamber is analysed, and the error model is established.

利用电磁场和误差分析理论，在阐述天线远场测量条件的基础上，分析了微波暗室有限测试距离对天线远场测量的影响，建立了误差模型，并结合实例说明了微波暗室有限测试距离对天线场强测量、增益测量的影响。

In this paper the dimension parameters which influence the electrical properties of the biconical antenna is discussed by means of simulation and experimental test. And a biconical omni-directional antenna array operating within 0.8~3GHz is designed. Its design parameters and the results of the simulation including curves of the VSWR, radiation pattern and the gain within the band are also given.

本文通过仿真与实验测试对影响双锥天线电性能的各种尺寸参数的作以探讨，并且设计了一种可工作于0.8～3GHz的宽带双圆锥全向天线阵，给出了该天线的具体结构尺寸以及仿真后的VSWR数据曲线，E面，H面辐射方向图和频段内各频点的增益值，以及此天线在0.8～3GHz范围内的VSWR测试数据曲线，并进一步提出了一些设计此类天线的关键点。

with the development of satellite navigation communication,antenna is a very important unit,performance of the satellite navigation communication system is affected by it partly.a new type of bifilar helix for satellite navigation communication system is introduced,and the traving-wave bifilar helix is analyzed briefly.meanwhile,the design and the test results are given.the results show that the antenna possesses excellent circular hemispherical beam with wide angle circular polarization and better impedance match,and has a compact structure and high integration.it can be applied in caps systems successful.

小 摘要：随着卫星导航通信技术的迅速发展，天线作为卫星导航通信系统中的重要部分，在一定程度上决定着卫星导航通信系统的性能。介绍一种用于卫星导航通信系统的双臂螺旋天线，讲述爬行波式螺旋天线的设计过程，并给出最终测试结果。结果表明，该天线具有优良的圆对称半球波束，良好的广角圆极化特性和优良的阻抗匹配特性，其结构简单、紧凑，为通信入站回传提供了一种优良的选择。

In condition of obtaining two parameters of antenna brightness temperature at sea-water area and the oil film area with single microwave radiometer (8mm) of fix antenna, the model of calculating the oil film thickness of s outh China sea with airborne remote sensing was developed. The measured results over sea were closed with calculated values of the model.

提出了在单波段(8mm)固定天线微波辐射计获取海水区与油膜区天线亮温两参数条件下的航空遥感南海海面油膜厚度计算模式，海上航空遥感测量实验与模式计算结果基本符合。

Television signals can be transported in three ways: broadcast via radio waves using ground antenna, by the coaxial tree network of the community antenna TV network or recently via a satellite, using the so-called direct broadcast system DBS

这个接口之所以如此称呼，是因为无论在多长的时间区间里发送的数据和接收的数据是不同步的，因而没有必要采用特殊的手段使发送器和接收器的时钟同步。

Television signals can be transported in three ways: broadcast via radio waves using ground antenna,by the coaxial tree network of the community antenna TV network or recently via a statellite, using the so-called direct broadcast system.

电视信号可以种方式传送：利用地面天线的无线广播方式；用公用天线电视网的同轴电缆树状网络传送；近来人们又利用卫星，通过被称为直接的广播系统来传送。

Television signals can be transported in three ways: broadcast via radio waves using ground antenna, by the coaxial tree network of the community antenna TV network or recently via a satellite, using the so-called direct broadcast system.

电视信号可以种方式传送：利用地面天线的无线广播方式；用公用天线电视网的同轴电缆树状网络传送；近来人们又利用卫星，通过被称为直接的广播系统来传送。

A,顺序法 Television signals can be transported in three ways: broadcast via radio waves using ground antenna, by the coaxial tree network of the community antenna TV network or recently via a statellite, using the so-called direct broadcast system.

电视信号可以种方式传送：利用地面天线的无线广播方式；用公用天线电视网的同轴电缆树状网络传送；近来人们又利用卫星，通过被称为直接的广播系统来传送。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。