查询词典 dipole antenna

The present invention provides a method (400) and antenna (100) for providing an omnidirectional pattern.

本发明提供一种用于提供全向场型图的方法（400）和天线（100）。

The antenna (100) is smaller than prior art omnidirectional antennas with the same bandwidth.

天线（100）的尺寸比具有相同带宽的现有技术全向天线小些。

The research on reconfigurable antennas is a hot point in the antenna field.

可重构天线是当前天线领域的研究热点。

The pattern of an antenna in missile is calculated by using GTD method.

本文应用几何绕射理论计算了弹载天线的辐射方向图。

The key idea is to obtain benefits of multi-antenna systems by cooperative retransmissions among relay stations and users when considering protocol layers.

提出时分多址方式下由固定中继节点支持的透明模式下的随机接入协议，通过中继节点与用户间的合作重传来解决多个用户同时接入发生碰撞的问题。

The principle of railroad trackbed inspection with GPR mounted on track vehicle is introduced. In line with requirements of exploring depth, accuracy and speed in the process of field survey, the layout of GPR survey line is put forward, the center frequency of antenna, the maximum time window, the temporal sampling interval and the space between traces are calculated according to the theoretical formulas.

介绍了使用路检车装载探地雷达对铁路路基检测的原理，结合野外探测过程中对测量深度、精度和行车速度的要求，给出了GPR现场工作测线布置的原则，理论上给出天线中心频率、时窗、采样率、测量点距的计算公式。

Full-wave analysis of this antenna is implemented based on the new method that combines the conformal FDTD method and the dyadic Green's functions for cyl...

设计和仿真结果表明，在不增加剖面厚度的情况下，工作于L和C波段的天线带宽(VSWR≤ 2 。0 )可达近 30 %甚至更宽。

Circular polarization microstrip antenna has many excellent properties, which in wireless applications play an important role to play.

圆极化微带天线具有很多优良的特性，因而在无线应用中扮演着十分重要的角色。

Circular polarization microstrip antenna has many excellent properties, which in wireless applications play an important role to play.

圆极化微带天线具有很多优良の特性，因而在无线应用中扮演着十分重要の角色。

By measuring the circular polarization antenna practically, this method has been proved to be of merits of effectiveness, high automatization, and high measurement accuracy.

利用该测试系统对圆极化天线进行实际测试，证明了该方法具有实用性强、自动化程度高、测量精度高等特点。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。