偶极天线

It also has 4 IFF antenna dipoles across the top of the bedspring.

在天线顶端还有4组IFF偶极天线。

For example, in the design of antenna, it is always involve the imaginaries Bessel function, so these work are belonged to the base research work, but it is important.

本文对各向异性介质偶极天线辐射场的数值计算的研究以及各向异性介质波参数的数值计算的研究目前还没有文献系统介绍，但这些内容对进一步研究探地雷达辐射场的规律是必不可少的，尤其是传播常数，它在探地雷达的研究中仍然是一个非常重要的公式，对其的深入研究有利于对探地雷达资料的正确解释。

For example, karst topography is very approach this mode. We not only discuss the effect relation of dipole field in the mediator, but also in the property of antenna. Imaginaries Bessel function is involved in the process of discussion. because it is very important to the result.

钻孔雷达一般使用偶极天线，所以对偶极天线辐射场正反演问题的研究是目前的当务之急，它直接影响着对钻孔雷达资料的正确解释，对进一步研究钻孔雷达天线的有关特性及钻孔雷达的研制起着非常关键的作用。

A UWB planar trapezoidal dipole antenna with a simple feeding structure is proposed. In our design, the printed asymmetric dipole antenna is center-fed by a transmission line which consists of two parallel strip lines.

本论文以一种简单的馈入结构来设计具有超宽频特性的梯型偶极天线，即是以两平行带线组合成的传输线，自中心馈入至非对称性的梯型偶极天线。

Using the finitedifference timedomain electromagnetic method and c language program in the matlab software,the spatial electromagnetic field distribution radiation of photoconductive dipole antenna is calculated and displayed on the computer in a pseudocolor graph.

研究了光电导天线产生太赫兹波的辐射特性，利用麦克斯韦方程及其边界条件，计算了近远场的电场强度；采用电磁波时域有限差分方法，在Matlab系统软件中，用C语言编写程序计算光电导偶极天线的辐射太赫兹波的空间电磁场分布，并在计算机上以伪彩色图形显示，这种电磁场的可视化结果为天线的设计和改进提供了直观的物理依据。

MF-PEDA exhibits excellent broadband behaviors covering the frequency range from 3.1 to 10.6GHz, good fidelities of signal waveforms in space, and radiation patterns similar to those of a conventional dipole antenna.

提出的宽带扇形-槽线耦合结构，可有效克服这类偶极天线在带宽和馈电方面的局限，从而让平面椭圆偶极天线能有效应用于工程实现。

Taking example for the third-order differential Rayleigh pulse radiated by the dipole antenna which is resistance loaded, the influences of antenna on the design of pulse waveform in ultra-wideband system are analyzed.

以三阶微分Rayleigh脉冲通过电阻加载偶极天线辐射的情况为例，研究了天线对超宽带系统脉冲信号波形设计的影响。

In this illustrated embodiment, the dipole antenna structure is a folded dipole antenna 104 having a first and second bend.

在所例示的实施例中，偶极天线结构是具有第一和第二弯曲的折叠偶极天线104。

The folded dipole antenna is probably only ever seen as a TV antenna.

被折叠的偶极天线被折叠的偶极天线大概曾经只被看见作为电视天线。

Replacing line cord antenna with a folded dipole antenna usually makes a big improvement.

替换电源软线天线用被折叠的偶极天线通常做大改进。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐