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1. 发明授权

US6049312A Antenna system with plural reflectors 失效
标题翻译：具有多个反射器的天线系统
公开(公告)号：US6049312A
公开(公告)日：2000-04-11
申请号：US21926
申请日：1998-02-11
申请人： Peter Lord , Howard Luh , Sina Barkeshli , Louis B. Brydon , Jeff Zaine
发明人： Peter Lord , Howard Luh , Sina Barkeshli , Louis B. Brydon , Jeff Zaine
IPC分类号： H01Q19/17 , H01Q1/28 , H01Q5/00 , H01Q5/45 , H01Q19/195 , H01Q25/00 , H01Q19/14
CPC分类号： H01Q19/195 , H01Q1/288 , H01Q5/45
摘要： An antenna system having a front reflector and a rear reflector arranged in tandem, a front feed for illuminating the front reflector, and a rear feed for illuminating the rear reflector. Each of the reflectors has a generally dish-shaped configuration, and the feeds are located in positions offset from axes of the respective reflectors. The front reflector is reflective to a first radiation, while being substantially transparent to a second radiation except for a fraction of the power of the second radiation. The fractional part of the second radiation is reflected from the first reflector as an interfering beam, the interfering beam being scanned away from a coverage region of a beam of the first radiation by an offset between the feeds. The radiations may differ in polarization or in frequency. There may be a complete shading of the rear reflector by the front reflector from the radiation of the rear feed to produce uniform illumination of the rear reflector for greater accuracy in a formation of a beam from the rear reflector. Six degrees of freedom in positioning and orientation of the reflectors and their feeds provides maximum design flexibility for obtaining a compact antenna.
摘要翻译：一种天线系统，具有前置反射器和后部反射器，它们串联布置，用于照射前部反射器的前部馈电和用于照射后部反射器的后部馈电。每个反射器具有通常的碟形构造，并且进给位于偏离各个反射器的轴的位置。前反射器对第一辐射是反射的，而除了第二辐射的功率的一部分之外，第二辐射基本上是透明的。第二辐射的分数部分作为干扰光束从第一反射器反射，干涉光束被扫描从第一辐射的光束的覆盖区域通过馈送之间的偏移。辐射在极化或频率上可能不同。后反射器可以通过前反射器从后馈源的辐射完整地遮蔽后反射器，以产生后反射器的均匀照明，以在从后反射器形成光束时获得更高的精度。反射器及其馈电的六个自由度的定位和定位为获得紧凑型天线提供了最大的设计灵活性。

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