首页>
外国专利>
Brief description of the attack of antennas to a navigation system of the omnidirectional a very high frequency
Brief description of the attack of antennas to a navigation system of the omnidirectional a very high frequency
展开▼
机译:天线对全向甚高频导航系统的攻击的简要说明
展开▼
页面导航
摘要
著录项
相似文献
摘要
An antenna drive arrangement for a very high frequency omnidirectional range (VOR) navigation system for aircraft. The antenna has two vertically arrayed antenna elements located above a ground plane, and reference and variable phase signals are distributed to each of the antenna elements in amplitude and phase relationship selected to produce a null in the H-component of the radiated field which is substantially tangential to a projection of the ground plane. The null is located in a region of the field disposed radially outwardly of the antenna array.
展开▼