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公开(公告)号：US5557292A
公开(公告)日：1996-09-17
申请号：US263558
申请日：1994-06-22
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。
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公开(公告)号：US4262265A
公开(公告)日：1981-04-14
申请号：US25229
申请日：1979-03-29
IPC分类号： H01P5/08
CPC分类号： H01P5/085
摘要： This device provides for a substantially orthogonal transition or connection point between a strip transmission line configuration (one conductor, or two conductors sandwiched around a dielectric support, positioned in air between two ground planes such as might be used in a microwave antenna feed network) and a coaxial line section. The particular construction of the "side-launch transition" suppresses spurious parallel plate modes, and, in the case of two conductors surrounding a dielectric, trapped modes which occur between the two conductors. A U-shaped upper "dam" and corresponding lower "dam," electrically interconnected at several points, surround the termination of the stripline conductor(s) and provide suppression of parallel plate molding at the transition. In the case of two conductors surrounding a dielectric, electrical interconnection at the terminal point of the stripline conductors suppresses the trapped modes before they can be launched. The system has been found to provide extremely low voltage standing wave ratios over a wide range of microwave frequencies.
摘要翻译： 该装置提供条带传输线配置（一个导体或夹在介电支撑件之间的两个导体，位于两个接地平面之间的空气中的两个导体，例如可能在微波天线馈电网络中使用）之间的基本正交的转换或连接点，以及 同轴线段。 “侧向发射转变”的特殊结构抑制了杂散的平行板模式，并且在围绕电介质的两个导体的情况下，发生在两个导体之间的俘获模式。 在几点电互连的U形上“坝”和相应的下“坝”围绕带状导体的终端，并在转变时提供平行板成型的抑制。 在围绕电介质的两个导体的情况下，带状线导体的终端处的电互连在被启动之前抑制被捕获的模式。 已经发现该系统在宽范围的微波频率上提供极低的驻波比。
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公开(公告)号：US5909191A
公开(公告)日：1999-06-01
申请号：US942704
申请日：1997-10-01
CPC分类号： H01Q3/267 , H01Q3/2611
摘要： An antenna element and beamforming network (10) preferably comprises a plurality of radiators (12), a plurality of band pass filters (14) and a plurality of test couplers (16). Each radiator (12) is coupled to a dedicated MMIC (18). The output of MMICs (18) are coupled to a power stripline combiner (20) to provide a single output. Each of MMICs (18) is independently controllable to shape the antenna beams as desired for producing nulls in pattern coverage. The output of stripline combiner (20) may also be coupled through an output test coupler (46) to a jammer detector and correlator (24). In one embodiment, radiators (12) are horns that include filters (14). The output of each horn is coupled to the input of its dedicated MMIC (18). In another embodiment, radiators (12) are a patch array coupled together by a stripline combiner. The output of the stripline combiner is coupled by band pass filter (14) to the input of the respective MMICs (18). The present invention integrates these components into a single package with reduced size and weight.
摘要翻译： 天线元件和波束形成网络（10）优选地包括多个辐射器（12），多个带通滤波器（14）和多个测试耦合器（16）。 每个散热器（12）耦合到专用MMIC（18）。 MMIC（18）的输出耦合到功率带状线组合器（20）以提供单个输出。 每个MMIC（18）可独立控制，以根据需要对天线波束进行成形，以在图案覆盖中产生空值。 带状线组合器（20）的输出也可以通过输出测试耦合器（46）耦合到干扰检测器和相关器（24）。 在一个实施例中，散热器（12）是包括过滤器（14）的喇叭。 每个喇叭的输出端耦合到其专用MMIC（18）的输入端。 在另一个实施例中，辐射器（12）是由带状线组合器耦合在一起的贴片阵列。 带状线组合器的输出通过带通滤波器（14）耦合到相应MMIC（18）的输入端。 本发明将这些组件整合到具有减小尺寸和重量的单个包装中。
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公开(公告)号：US4383226A
公开(公告)日：1983-05-10
申请号：US203204
申请日：1980-11-03
IPC分类号： H01P5/08
CPC分类号： H01P5/085
摘要： This device provides for a substantially orthogonal transition or connection point between a strip transmission line configuration (one conductor, or two conductors sandwiched around a dielectric support, positioned in air between two ground planes such as might be used in a microwave antenna feed network) and a coaxial line section. The particular construction of the "side-launch transition" suppresses spurious parallel plate modes, and, in the case of two conductors surrounding a dielectric, trapped modes which occur between the two conductors. A U-shaped upper "dam" and corresponding lower "dam," electrically interconnected at several points, surround the termination of the stripline conductor(s) and provide suppression of parallel plate moding at the transition. In the case of two conductors surrounding a dielectric, electrical interconnection at the terminal point of the stripline conductors suppresses the trapped modes before they can be launched. The system has been found to provide extremely low voltage standing wave ratios over a wide range of microwave frequencies.
摘要翻译： 该装置提供条带传输线配置（一个导体或夹在介电支撑件之间的两个导体，位于两个接地平面之间的空气中的两个导体，例如可能在微波天线馈电网络中使用）之间的基本正交的转换或连接点，以及 同轴线段。 “侧向发射转变”的特殊结构抑制了杂散的平行板模式，并且在围绕电介质的两个导体的情况下，发生在两个导体之间的俘获模式。 U形上“大坝”和相应的较低的“大坝”在几个点电互连，围绕着带状线导体的终端，并在转变时提供平行板调制的抑制。 在围绕电介质的两个导体的情况下，带状线导体的终端处的电互连在被启动之前抑制被捕获的模式。 已经发现该系统在宽范围的微波频率上提供极低的驻波比。
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