全向天线,即在水平方向图上表现为360°都均匀辐射,也就是平常所说的无方向性,在垂直方向图上表现为有一定宽度的波束,一般情况下波瓣宽度越小,增益越大。全向天线在移动通信系统中一般应用于郊县大区制的站型,覆盖范围大。
上方亦置有一直径1168公厘的高增益碟形天线(parabolic antenna)。一个低增益全向天线(omnidirectional antenna)置于高增益天线旁的一2235公厘高天线杆。太空船总高度为2.89米。
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一般而言,有三种类型的天线可用选择:全向天线(omni-directional antenna,omni antenna),定向天线(directional antenna)和所谓的泄漏馈线 电缆(leaky feeder...
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... omnidirectional, actuator array, micromanipulation, bimorph, polyimide [gap=300]关键词:走芯片,微型机器人,全向天线,驱动器阵列,显微操作,双片,聚酰亚胺 ...
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Firstly, the theories about the omni-directional antenna design are introduced in this paper.
本文首先阐述全向天线的设计原理。
参考来源 - 水平极化全向(高增益)通讯天线的设计和研究Several such tapered slot antennas were arranged radially to form a circle,and a group of PINs was put at their feed lines. With the proper sequence switch of PINs,these tapered slot antennas can be constructed into an equivalent omnidirectional antenna.
将几个这样的渐变缝隙天线以放射状构成一圈,并在它们的馈线上引入一组PIN开关,以适当的时序控制PIN开关依次切换,可构成一种等效的全向天线。
参考来源 - 一种由渐变缝隙天线构成的等效全向天线·2,447,543篇论文数据,部分数据来源于NoteExpress
水平极化半全向天线,用传统方法实现具有较大难度。
The designation of horizon polarized half omnidirectional is very difficult.
针对中心站用的全向天线的高性能要求,设计了并行馈电的天线阵列。
A parallel feed patch antenna array is designed as the omni-directional antenna of the base station antenna.
介绍了某全向天线座的抗振设计、距离调节装置设计和发泡体的模具设计。
This paper introduces the anti-vibration design, distance-regulation device design and the die design of foaming body in an omni-directional antenna pedestal.
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