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1. 发明授权

US5576721A Composite multi-beam and shaped beam antenna system 失效
标题翻译：复合多梁和成形梁天线系统
公开(公告)号：US5576721A
公开(公告)日：1996-11-19
申请号：US342653
申请日：1994-11-21
申请人： Yeongming Hwang , Vito J. Jakstys
发明人： Yeongming Hwang , Vito J. Jakstys
IPC分类号： H01Q15/00 , H01Q25/00 , H01Q19/06
CPC分类号： H01Q25/007 , H01Q15/0013
摘要： A composite antenna for use in satellite communication provides both the functions of multiple beams and a shaped beam radiated from a single radiating aperture. The radiating aperture may employ a mirror or a lens. Transmitted radiation from an array of radiators is coupled via a subreflector to the main reflector or lens which constitutes the radiating aperture of the antenna system. During reception of radiant-energy signals, signals received by the main reflector or lens are coupled via a separate subreflector to a separate array of receiving radiators operated at a frequency band different from that of the transmit array. The two subreflectors are combined into a single subreflector assembly employing a metallic concave reflector covered by a layer or coating of frequency selective optical material which allows for propagation of radiation at one frequency to the metal reflector while reflecting radiation in the other frequency band from a surface of the coating. Separate beamformers are employed for receiving and transmitting radiant-energy signals, the beamformers combining signals of clusters of radiators to provide for multiple beams wherein each of a plurality of the beams is formed by a cluster of radiators. Additional connection is provided via diplexers to the beamformers to select radiators to be employed for generation of shaped beams for both reception and transmission. The reflecting surfaces have diameters much larger than the diameters of the radiators to provide for individual beams from each of the radiators.
摘要翻译：用于卫星通信的复合天线提供多个波束的功能和从单个辐射孔辐射的成形波束的功能。辐射孔可以使用镜子或透镜。来自辐射器阵列的透射辐射经由子反射器耦合到构成天线系统的辐射孔的主反射器或透镜。在接收辐射能量信号期间，由主反射器或透镜接收的信号经由单独的子反射器耦合到在与发射阵列的频带不同的频带上操作的接收辐射器的单独阵列。两个子反射器被组合成单个子反射器组件，其采用覆盖有频率选择性光学材料的层或涂层的金属凹面反射器，其允许将一个频率的辐射传播到金属反射器，同时从表面反射另一个频带中的辐射的涂层。单独的波束形成器用于接收和发送辐射能信号，波束形成器组合辐射器簇的信号以提供多个波束，其中多个波束中的每一个由一群散热器形成。通过双工器向波束形成器提供额外的连接，以选择要用于产生用于接收和传输的成形波束的辐射器。反射表面的直径比散热器的直径大得多，以提供来自每个辐射器的各个光束。

2. 发明授权

US5345248A Staggered helical array antenna 失效
标题翻译：交错螺旋阵列天线
公开(公告)号：US5345248A
公开(公告)日：1994-09-06
申请号：US918451
申请日：1992-07-22
申请人： Yeong M. Hwang , Vito J. Jakstys , Chun C. Lee , Francis J. Kilburg
发明人： Yeong M. Hwang , Vito J. Jakstys , Chun C. Lee , Francis J. Kilburg
IPC分类号： H01Q11/08 , H01Q19/17 , H01Q1/36
CPC分类号： H01Q19/17 , H01Q11/08 , H01Q21/067
摘要： An antenna composed of an array of helical radiators has, in accordance with a methodology of the invention, a physical structure for reducing mutual coupling between closely spaced radiators so as to permit a reduction in spacing of the radiators. The radiators are mounted upon a mounting base, such as a ground plane element, with the helical radiators extending forward of the mounting base. Distances between the radiators and the mounting base are staggered in an amount approximately equal to one turn of a helix. The stagger distance corresponds approximately to one quarter of a free-space wavelength. The staggering significantly reduces the mutual coupling so as to permit closer spacing of the helical radiators such as, by way of example, in the formation of a feed directing radiant energy to a reflector of the antenna.
摘要翻译：根据本发明的方法，由螺旋形辐射器阵列组成的天线具有用于减少紧密间隔的散热器之间的相互耦合的物理结构，以便减小散热器的间隔。散热器安装在诸如接地平面元件的安装基座上，螺旋形散热器延伸到安装基座的前方。辐射器和安装座之间的距离以大约等于螺旋的一圈的量交错。交错距离约等于四分之一的自由空间波长。交错显着地减小了相互耦合，以允许螺旋形辐射器的更紧密的间隔，例如通过例如形成将辐射能量引导到天线的反射器的馈送。

3. 发明授权

US5557292A Multiple band folding antenna 失效
标题翻译：多频段折叠天线
公开(公告)号：US5557292A
公开(公告)日：1996-09-17
申请号：US263558
申请日：1994-06-22
申请人： Evert C. Nygren , Peter W. Lord , Vito J. Jakstys , Sina Barkeshli , Levent Ersoy
发明人： Evert C. Nygren , Peter W. Lord , Vito J. Jakstys , Sina Barkeshli , Levent Ersoy
IPC分类号： H01Q15/20 , H01Q1/28 , H01Q13/02 , H01Q19/17 , H01Q19/19 , H01Q21/06 , H01Q21/30 , H01Q25/00 , H01Q19/14
CPC分类号： H01Q13/0275 , H01Q1/288 , H01Q25/007 , Y10S343/02
摘要： An antenna has one feed for an S-band electromagnetic signal, and a second feed constructed as an array of radiators to service two C-band signal channels. A subreflector having a microwave frequency selective surface (FSS) is placed in front of a main reflector. The C-band feed is constructed of an array of square aperture horns joined by separate transmit and receive barline beam-forming networks, and a meanderline polarizer to produce circularly polarized radiation patterns. Tapered ridges extend longitudinally along inner wall surfaces of each of the horns to provide increased bandwidth to the C-band feed. The frequency selective surface is constructed, typically, of a generally planar substrate of material transparent to electromagnetic radiation, and numerous metallic, generally annular, radiating elements, or resonators, arranged on the substrate in an array of repeating nested sets of the radiating elements. The lower frequency S-band feed is located behind and to the side of the subreflector for transmission of radiation via a folded optical path to the main reflector. The C-band feed is located in front of and to the side of the subreflector for transmission of radiation along a straight path through the FSS to the main reflector. The locating of the two feeds to the side of the subreflector permits the subreflector to be stowed by folding down upon the C-band feed, and the main reflector to be stowed by folding down upon both the S-band feed and the stowed subreflector.
摘要翻译：天线具有用于S波段电磁信号的一个馈送，以及构造为用于服务两个C波段信号信道的辐射器阵列的第二馈送。具有微波频率选择表面（FSS）的子反射器放置在主反射器的前面。 C波段馈线由一个由分开的发射和接收条形波束形成网络连接的方形孔径阵列组成，曲折偏振器产生圆偏振辐射图。锥形脊沿每个喇叭的内壁表面纵向延伸，以向C带馈送提供增加的带宽。频率选择表面通常构造为对电磁辐射透明的材料的大体上平面的基底，以及布置在衬底上的多个金属的，大体上环形的辐射元件或谐振器，该辐射元件或谐振器以辐射元件的重复嵌套组的阵列。较低频率的S波段馈送位于子反射器的后面和侧面，用于通过折叠的光路将辐射传输到主反射器。 C带馈送位于副反射器的前面和侧面，用于沿着通过FSS的直线路径将辐射传输到主反射器。将两个进给器定位到副反射器的侧面允许通过向下折叠C形带进给而将副反射器收起，并且通过将S波段进给和收起的副反射器折叠来收起主要反射器。

4. 发明授权

US5121129A EHF omnidirectional antenna 失效
标题翻译： EHF全向天线
公开(公告)号：US5121129A
公开(公告)日：1992-06-09
申请号：US692805
申请日：1991-04-25
申请人： Eu-An Lee , Yeongming Hwang , Vito J. Jakstys
发明人： Eu-An Lee , Yeongming Hwang , Vito J. Jakstys
IPC分类号： H01Q13/02 , H01Q15/08 , H01Q19/06
CPC分类号： H01Q19/06 , H01Q13/0208 , H01Q15/08
摘要： The EHF omnidirectional antenna system (10) includes a shaped lens (12) that is illuminated by a corrugated horn (14). The lens is disposed in the far-field of the horn and has two shaped surfaces (20 and 30) which together disperse the beam from the horn, such that a nearly uniform coverage over hemispherical coverage area is achieved at a frequency of approximately 44 GHz. The method of making the lens utilizes a surface shaping analysis to develop the shaped surfaces of the lens. A surface matching layer (44) is applied to all surfaces of the lens to reduce surface reflection.
摘要翻译： EHF全向天线系统（10）包括由波纹喇叭（14）照明的成形透镜（12）。透镜设置在喇叭的远场中，并且具有两个成形表面（20和30），这些表面一起分散来自喇叭的光束，使得在大约44GHz的频率下实现半球形覆盖区域几乎均匀的覆盖。制造透镜的方法利用表面成形分析来显影透镜的成形表面。表面匹配层（44）被施加到透镜的所有表面以减少表面反射。

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