查询词典 antenna array

All these characteristics can extend frequency band , reduce antennaelectric size and improve impedance characteristics. In order to miniaturization ofantenna, impedance complete compensate and matching optimization of electricallysmall antenna are brought forward, and this method is applied to the discage antennas.

从阻抗特性和辐射特性的实测数据表明，水加载单极振子天线的谐振频率能很好地向低端下移，局部水加载单极圆锥天线在保持原有宽频带特性的前提下，以较少的效率损失实现了较大范围向低频区扩展，即天线小型化，这将为短波超短波波段天线进一步的小型化设计提供很好的思路。

KWGR614 modelling is beautiful, fashionable, use two dismountable 2dbi antenna, make signal stronger.

KWGR614造型美观、时尚，采用两根可拆卸2dbi天线，使信号更强。

Its basic idea is to realize all kinds of radio communication functions, such as work band, kinds of modulation or demodulation, data format, encrypt mode and communication protocol by upgradable and displaceable software on a hardware platform which is opening, expanded and simple structure. And it makes wideband A/D and D/A converters close to the antenna, in order to develop more flexible and opening wireless communication system.

它的基本思想是以开放的、可扩展的、结构最简的硬件为通用平台，把尽可能多的通信功能，如工作频段、调制解调类型、数据格式、加密模式、通信协议等用可升级、可替换的软件来完成，并使宽带A/D和D/A转换器尽可能地靠近天线，以研制出具有高度灵活性、开放性的新一代无线通信系统。

A domelike shell transparent to radio-frequency radiation, used to house a radar antenna.

雷达天线罩有顶构造，可以让无线电频率辐射穿过，用于隐蔽雷达天线

The G6NLC duad double quad antenna was inspired by designs for the 23cm and 13cm Amateur TV allocations. This design has been scaled, built, and then analysed with a network analyser to ensure the performance is optimum.

G6NLC 设计的双菱阵列天线是一个创造性的，为23mm和13mm业余电视频段设计的，这个设计被估算、制作，然后用网络分析系统分析，确保其最佳性能。

The antenna was mounted eccentrically and rotated by an electric motor at 2,000 rpm through a cone angle of 30 degrees.

天线被偏离中心安装，由一个每分钟2000转的电动机驱动做30度的锥形旋转。

The influence of parameters of traveling antenna on resonator frequency is also analyzed elementarily.

文中对移动天线参数的变化对谐振频率的影响进行了初步分析。

In order to prevent and avoid the damage of lightning stroke on electronic systems and equipment,the lighting designs are investigated,including direct lightning stroke,lightning invasion,elevatory antenna protection,ground network configuration,etc.

为了预防和避免雷电对电子系统设备造成破坏，研究了电子系统的避雷设计，包括直击雷防护、感应雷防护、架高天线防护、地网设置等方面，并用实例进行了验证。

In this paper the mathematical models and methods for GPS single-point positioning are studied systematically on the theory.All kinds of error correction formulas are studied,such as ironsphere correction,troposphere correction,relativistic effect correction,earth rotation correction ,earth tides correction ,satellites antenna phase center offset correction. GPS single-point positioning programs is coded with pseudoranges and broadcast ephemerides,phases and broadcast ephemerides,and phases and precise ephemerides.And a great amount of computation has been done using the data collected .The results are computed with the 24 hour pseudoranges observation data before and after the canceling of the SA.

本文从理论上系统地研究了GPS单点定位的数学模型和方法，研究了各项误差改正公式，例如电离层改正、对流层改正、相对论周期部分改正、地球旋转改正、地球固体潮改正、卫星天线相位中心偏差改正；编写了伪距与广播星历、相位和广播星历及相位和精密星历的定位程序，并使用有关数据进行了大量的计算工作。

Epicauta ruficeps, antenna, sensilla, ultrastruture, scanning electron microscopy

中文关键字：红头芫菁，触角，感器，超微结构，扫描电镜

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。