首页> 外文期刊>Electrical Engineers - Part IIIA: Radiocommunication, Journal of the Institution of >The performance of some v.h.f. aerials used in naval communications
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The performance of some v.h.f. aerials used in naval communications

机译:一些v.h.f.海军通信中使用的天线

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The paper describes some aerials used for v.h.f. radiotelephone communications in naval and combined operations, and measurements of their performance. A portable 3-element Yagi array, having a gain of 6 db and a limited frequency-coverage, was used for point-to-point communications between beach landing-parties and as an alternative to line. A rotatable broadside array having a gain of 12 db was used for communication from shore to ships. A single-wire horizontal rhombic aerial of major axis 100 ft was used for longer-distance point-to-point communications, for example across the English Channel at the time of the landings in Normandy; it was designed to be portable and had a gain of 16 db. On shipboard, where all-round radiation is required, vertical dipoles were used. Some measured field-strength diagrams show the directive effects which may be experienced with different positions of aerial relative to a ship's superstructure.
机译:该文件描述了一些用于v.h.f.海军和联合行动中的无线电话通信,以及它们的性能测量。便携式3元件八木阵列,具有6 db的增益和有限的频率覆盖范围,被用于海滩登陆方之间的点对点通信,并用作线路的替代方案。增益为12 db的可旋转宽边阵列用于从岸到船的通信。长轴为100英尺的单线水平菱形天线用于长距离点对点通信,例如在诺曼底登陆时穿越英吉利海峡;它被设计为便携式的,并具有16 db的增益。在需要全方位辐射的舰船上,使用了垂直偶极子。一些测得的场强图显示了相对于船舶上层建筑的不同天线位置可能经历的定向效应。

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