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公开(公告)号：US20190097309A1
公开(公告)日：2019-03-28
申请号：US15714252
申请日：2017-09-25
CPC分类号： H01Q1/288 , H01P1/17 , H01P1/171 , H01Q1/125 , H01Q3/02 , H01Q3/04 , H01Q13/0258 , H01Q15/16
摘要： An antenna system includes a reflector, an offset feed horn and a support platform. The reflector has a reflector surface. The reflector and offset feed horn are attached to the support platform. The offset feed horn transmits RF microwave energy toward the reflector surface. The antenna system further includes a turntable which has a single rotation axis. The turntable rotates about the antenna rotation axis. The support platform is attached to the turntable such that the turntable rotates the support platform. The reflector surface has a perturbed paraboloid geometrical shape that reflects most RF microwave energy along a beam peak pointing direction. The reflector surface reflects RF microwave energy towards the earth's surface in such a manner that the reflected RF microwave energy illuminates a narrow strip of the earth's surface from nadir to a point near the earth's horizon with substantially constant intensity. The offset feed horn is oriented and positioned such that it points away from the beam peak pointing direction.
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公开(公告)号：US09466888B2
公开(公告)日：2016-10-11
申请号：US13975676
申请日：2013-08-26
发明人： Shawn David Rogers
CPC分类号： H01Q15/242 , H01P1/162 , H01P1/17 , H01P5/103 , H01Q13/00 , H01Q13/08 , H01Q19/06 , Y10T29/49016
摘要： An antenna feed with mode suppression includes a transition section, having a window for connecting to an output port of a waveguide and having inner and outer conductors forming a coaxial waveguide that couples energy from the waveguide into a horizontal TE11 mode in the coaxial waveguide. A polarizer section is coupled to the transition section and generates circular polarization from the horizontal mode of the transition section. A radiator section is coupled to the polarizer and provides an output signal for the antenna feed. The transition section includes an electrical short coupling the inner and outer conductors. The electrical short is disposed adjacent to the window of the transition section. A dielectric block is also disposed between the inner and outer conductors and adjacent to the electrical short along the axis of the coaxial waveguide. A surface of the dielectric block is coated with a thin film sheet resistance.
摘要翻译： 具有模式抑制的天线馈电包括过渡部分，其具有用于连接到波导的输出端口的窗口，并且具有形成同轴波导的内部和外部导体，所述同轴波导将来自波导的能量耦合到同轴波导中的水平TE11模式。 偏振器部分耦合到过渡部分并且从过渡部分的水平模式产生圆偏振。 散热器部分耦合到偏振器并提供用于天线馈送的输出信号。 过渡部分包括内部和外部导体的电短接。 电短路设置在过渡部分的窗口附近。 介质块还设置在内导体和外导体之间并且沿着同轴波导的轴线邻近电短路。 介质块的表面涂覆有薄膜片电阻。
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3.发明授权Circular polarizer using stepped conductive and dielectric fins in an annular waveguide 有权环形偏振器在环形波导中使用阶梯状导电和介电散热片公开(公告)号：US08786380B2
公开(公告)日：2014-07-22
申请号：US13220964
申请日：2011-08-30
申请人： John P. Mahon , Cynthia P. Espino
发明人： John P. Mahon , Cynthia P. Espino
摘要： A polarization converter may include an annular waveguide comprising an inner conductor having an outer surface and an outer conductor having an inner surface coaxial with the outer surface of the inner conductor. A plurality of loading structures may be disposed within the annular waveguide to form a plurality of regions within the annular waveguide including an alternating sequence of high phase shift regions and low phase shift regions along a direction of propagation of an electromagnetic wave. The plurality of loading structures may be configured to introduce a predetermined relative phase shift between orthogonally polarized first and second components of the electromagnetic wave for a predetermined operating frequency band. The plurality of loading structures may be further configured to suppress propagation of one or more higher order modes in the annular waveguide over the operating frequency band.
摘要翻译： 偏振转换器可以包括环形波导，其包括具有外表面的内导体和具有与内导体的外表面同轴的内表面的外导体。 多个加载结构可以设置在环形波导内，以在环形波导内形成多个区域，其包括沿着电磁波的传播方向的高相移区域和低相移区域的交替序列。 多个加载结构可以被配置为在预定的工作频带上引入电磁波的正交极化的第一和第二分量之间的预定的相对相移。 多个加载结构可以被进一步配置为抑制在工作频带上环形波导中的一个或多个更高阶模的传播。
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公开(公告)号：US20120169557A1
公开(公告)日：2012-07-05
申请号：US13338286
申请日：2011-12-28
申请人： Guy NAYM , Hanan KEREN , Izik KREPNER , Shiomo LEVI
发明人： Guy NAYM , Hanan KEREN , Izik KREPNER , Shiomo LEVI
IPC分类号： H01Q15/24
CPC分类号： H01Q13/0241 , H01P1/17 , H01Q5/55 , H01Q15/244 , H01Q19/136 , H01Q25/04
摘要： A waveguide has distal, medial and proximal sections. The distal and medial sections rotate relative to each other and to the proximal section. In a first configuration, the waveguide transforms linearly polarized electromagnetic radiation at the proximal end of the proximal section to linearly polarized electromagnetic radiation at the distal end of the distal section and vice versa. In a second configuration, the waveguide transforms linearly polarized radiation at the proximal end of the proximal section into circularly polarized electromagnetic radiation at the distal end of the distal section and vice versa. Preferably, the distal and medial sections include respective eight-wavelength polarizers and the proximal section includes a quarter-wavelength polarizer. A multi-band antenna feed includes two such waveguides, one nested inside the other, for transforming electromagnetic radiation of respective frequency bands.
摘要翻译： 波导具有远端，内侧和近端部分。 远侧和中间部分相对于彼此和近端部分旋转。 在第一构造中，波导将近端部分的近端处的线偏振电磁辐射转换成在远端部分的远端处的线偏振电磁辐射，反之亦然。 在第二配置中，波导将近端部分的近端处的线性偏振辐射转换成远端部分的远端处的圆极化电磁辐射，反之亦然。 优选地，远侧和中间部分包括相应的八波长偏振器，并且近侧部分包括四分之一波长的偏振器。 多频带天线馈电包括两个这样的波导，一个嵌套在另一个中，用于转换各个频带的电磁辐射。
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5.发明申请Polarized wave separator, converter for satellite broadcast reception, and antenna device for satellite broadcast reception 有权用于卫星广播接收的极化波分离器，转换器和用于卫星广播接收的天线装置公开(公告)号：US20050190113A1
公开(公告)日：2005-09-01
申请号：US11047727
申请日：2005-02-02
申请人： Jiro Miyahara
发明人： Jiro Miyahara
摘要： A polarized wave separator includes a tubular waveguide, and a partition extending in the waveguide along the longitudinal direction thereof. The end of the partition facing the longitudinal direction is a step-graded end taking a stepped configuration when viewed from the side. A dielectric portion is disposed so as to cover at least the portion of the step-graded end when viewed in the longitudinal direction.
摘要翻译： 偏振波分离器包括管状波导和在波导中沿其纵向方向延伸的隔板。 面向纵向方向的分隔件的端部是从侧面观察时呈阶梯状构造的阶梯级的端部。 电介质部分设置成当从纵向方向观察时至少覆盖阶梯分级端部的至少一部分。
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公开(公告)号：US20010011933A1
公开(公告)日：2001-08-09
申请号：US09753654
申请日：2001-01-04
发明人： Shunji Enokuma
IPC分类号： H01P001/161
CPC分类号： H01P1/17 , H01P1/2131
摘要： A polarizer for a dual frequency band is formed of square waveguides of a dual structure. A section is formed which extends in a step-like manner as deeper inside between outer and inner square waveguides. The section is connected to the inner square waveguide at an output portion. A third section protrudes from the sidewall of the inner square waveguide, which section extends in a step-like manner as deeper inside and connected to the other sidewall of the square waveguide at the output portion to provide two divided rectangular waveguides.
摘要翻译： 用于双频带的偏振器由双重结构的方波导形成。 形成了一个部分，它以阶梯状的方式延伸到内外方波导之间的较深的内部。 该部分在输出部分连接到内部方波导。 第三部分从内部正方形波导的侧壁突出，该部分以更深的内部以阶梯状的方式延伸并且在输出部分处连接到方形波导的另一个侧壁，以提供两个分开的矩形波导。
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公开(公告)号：US6166610A
公开(公告)日：2000-12-26
申请号：US255122
申请日：1999-02-22
摘要： A tunable polarizer having a 90 degree phase shift section and two adjustable, or rotatable, 45 degree phase shift sections. Each section is separated by spacer to maintain independence and avoid interaction. When the two 45 degree phase shift sections and are orthogonal to each other, the polarization detected is determined by the 90 degree phase shift section which provides compatibility with circularly polarized signal. When the two 45 degree phase shift sections and are aligned, the polarizer is in a linear polarization compatibility mode.
摘要翻译： 具有90度相移部分和两个可调节或可旋转的45度相移部分的可调谐偏振器。 每个部分由间隔隔开以保持独立性并避免交互。 当两个45度相移部分彼此正交时，通过提供与圆偏振信号的兼容性的90度相移部分来确定检测到的极化。 当两个45度相移部分对准时，偏振器处于线偏振兼容模式。
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公开(公告)号：US5066958A
公开(公告)日：1991-11-19
申请号：US389014
申请日：1989-08-02
申请人： Gerry B. Blachley
发明人： Gerry B. Blachley
CPC分类号： H01Q15/246 , H01P1/17 , H01Q5/47
摘要： A dual frequency feed assembly employing a pair of coaxial circular wave guide cavities, each with respective probe. The higher frequency cavity, e.g. Ku band, is located within the lower frequency, e.g. C band cavity. A common motor is used to drive the two probes which have a common axis A. The lower frequency probe is coupled through the rear wall of the assembly to a rectangular waveguide. The higher frequency probe is also coupled through the rear wall of the assembly but via a coaxial line which is diverted from the axis A to exit beside the lower frequency waveguide. The two rectangular waveguides and the drive motor for the probes are all mounted on the rear of the assembly. In one embodiment of the invention the coaxial line extends from its probe to a housing on the body containing a signal processing circuit board. Connection to that board is made directly eliminating the need for any waveguide transmission line. In other embodiments of the invention, electronic switches, for example, ferrite switches are used in place of rotating probes. The probes may then be fixed and their coaxial lines fixed as well.
摘要翻译： 一种采用一对同轴圆形波导腔的双频进给组件，每个具有相应的探头。 较高频率的腔体，例如 Ku波段位于较低频率内，例如 C带腔。 普通电机用于驱动具有共同轴线A的两个探头。较低频率探头通过组件的后壁耦合到矩形波导管。 较高频率探头也通过组件的后壁耦合，但是经由同轴线从轴线A转移到低频波导旁边。 两个矩形波导和用于探针的驱动马达都安装在组件的后部。 在本发明的一个实施例中，同轴线从其探针延伸到包含信号处理电路板的主体上的外壳。 直接连接到该电路板，无需使用任何波导传输线。 在本发明的其他实施例中，使用电子开关，例如铁氧体开关来代替旋转探针。 然后可以将探针固定，并且它们的同轴线也被固定。
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公开(公告)号：USRE32835E
公开(公告)日：1989-01-17
申请号：US795426
申请日：1985-11-06
申请人： H. Taylor Howard
发明人： H. Taylor Howard
CPC分类号： H01P1/17 , H01P5/082 , H01Q21/245
摘要： A rotatable polarized signal receiver in a system for receiving linearly polarized electromagnetic signals includes a signal conductor having a receiver probe portion, oriented in a circular waveguide parallel to the polarization of the incident signal, and signal launch probe portion extending into the rectangular waveguide orthogonal to the direction of signal transmission therein, mounted concentrically in an insulator rod through perpendicular coupling of the circular and rectangular waveguides.
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公开(公告)号：USH370H
公开(公告)日：1987-11-03
申请号：US937801
申请日：1986-12-01
申请人： Steven H. Gold
发明人： Steven H. Gold
摘要： A microwave circular polarizer having two matched waveguide arms with a first arm having a twist in a first rotational sense and with a second arm having a twist in a second (reverse) rotational sense, and a hybrid coupler receiving radiation signals from the two arms. A left-hand 45.degree. twist in one arm and a right-hand 45.degree. twist in the other arm ensure that orthogonal linearly polarized components of an incident radiation field are combined in the hybrid coupler so as to direct a right circularly polarized signal out of one of the remaining ports of the hybrid coupler, and to direct a left circularly polarized signal from the other remaining port of the hybrid coupler.
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