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公开(公告)号:US6130649A
公开(公告)日:2000-10-10
申请号:US145753
申请日:1998-09-02
CPC分类号: H01P1/161
摘要: A polarizer for exciting the parabolic reflector of a directional antenna includes a profile section (7) which is formed as a waveguide and is adapted to simultaneously transmit two linearly polarized orthogonal electromagnetic waves. Two rectangular waveguides which separately guide the two electromagnetic waves are connected to the profile section (7). The end face of one of the rectangular waveguides is connected to the side wall of the profile section (7) in a radial direction, whereas the other rectangular waveguide is connected to an end face of the profile section (7). Both rectangular waveguides have an electromagnetic connection to the profile section (7) via openings, wherein a short-circuiting element (10) is disposed in the profile section (7) between the openings. Separate tuning elements are made unnecessary by locating a first transition section which is formed as a cavity (11) and has a generally rectangular cross-section, between the radially connected rectangular waveguide and the respective opening (9). Two opposing mutually aligned ribs (12, 13) which extend along the axial direction and project from the wider walls of the cavity (11) are arranged in the first transition section. In addition, a second transition section (8), which is stepped and encloses a cavity with a generally rectangular cross-section, is located between the profile section (7) and the rectangular waveguide (4). The second transition section (8) is connected to the end face of the profile section (7), wherein the end face of the rectangular waveguide is connected to the second transition section (8).
摘要翻译: 用于激发定向天线的抛物面反射器的偏振器包括形成为波导并且适于同时传输两个线性偏振正交电磁波的轮廓部分(7)。 分别引导两个电磁波的两个矩形波导连接到轮廓部分(7)。 矩形波导中的一个的端面在径向方向上连接到轮廓部分(7)的侧壁,而另一个矩形波导连接到轮廓部分(7)的端面。 两个矩形波导通过开口具有到型材部分(7)的电磁连接,其中短路元件(10)设置在开口之间的型材部分(7)中。 通过在径向连接的矩形波导和相应的开口(9)之间定位形成为空腔(11)并且具有大致矩形横截面的第一过渡部分,使得不需要分离的调谐元件。 沿着轴向方向延伸并从空腔(11)的较宽壁突出的两个相对对置的相互排列的肋(12,13)被布置在第一过渡部分中。 此外,阶梯状并且包围具有大致矩形横截面的空腔的第二过渡部分(8)位于轮廓部分(7)和矩形波导(4)之间。 第二过渡部分(8)连接到轮廓部分(7)的端面,其中矩形波导的端面连接到第二过渡部分(8)。
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公开(公告)号:US5708447A
公开(公告)日:1998-01-13
申请号:US567782
申请日:1995-12-05
CPC分类号: H01Q19/13
摘要: An antenna includes a parabolic reflector and a supply line attached thereto. The supply line includes two rectangular electromagnetic (waveguides) that are essentially parallel to each other. A tube-shaped exciter is common to the (waveguides) and is located at open ends of the waveguides. A back side of the reflector has a mechanically stable receptacle, which is used to attach the reflector to a support. The receptacle includes a metal ring with an L-shaped cross section in an opening that corresponds to a central opening in the reflector. The ring has a cylindrical area and, at a right angle to the cylindrical area, a base area that extends toward the inside of the ring. In the installed position, the cylindrical area of the ring penetrates and is centered in the opening of the reflector. A holding plate, which firmly surrounds and supports both waveguides, fits precisely into the ring and is attached to the ring in removable form when mounted.
摘要翻译: 天线包括抛物面反射器和连接到其上的电源线。 电源线包括基本上彼此平行的两个矩形电磁(波导)。 管状激励器对于(波导)是共同的,并且位于波导的开口端。 反射器的后侧具有机械稳定的容器,其用于将反射器附接到支撑件。 插座包括在开口中具有对应于反射器中的中心开口的L形横截面的金属环。 环具有圆柱形区域,并且与圆柱形区域成直角,具有朝向环的内侧延伸的基部区域。 在安装位置,环的圆柱形区域穿过反射器的开口并居中。 牢固地围绕并支撑两个波导的保持板精确地配合到环中并且当安装时以可移动的形式附接到环上。
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公开(公告)号:US06175338B1
公开(公告)日:2001-01-16
申请号:US09324854
申请日:1999-06-03
申请人: Hans-Peter Quade
发明人: Hans-Peter Quade
IPC分类号: H01Q138
CPC分类号: H01Q19/134 , H01Q9/285
摘要: A dipole feed arrangement for a parabolic reflector antenna, comprises a printed circuit board (PCB) having on one side a conductive pattern in the form of two spaced dipoles each bifurcated by a respective slot, and whose centre parts are connected by a conductor element, one half of the conductor element being provided with two spaced notches. A coaxial feeder cable's outer conductor is connected to a connection zone in the conductor element, and its inner conductor passes through a hole and connected to a transmission line element on the opposite side of the PCB. Plated through holes connect the transmission line element to the dipoles. The arrangement allows substantially identical current amplitudes to flow into each half of each dipole, thereby providing a desirable optimum symmetry of the feed arrangement's radiation pattern.
摘要翻译: 用于抛物面反射器天线的偶极馈电装置包括印刷电路板(PCB),该印刷电路板的一侧具有两个间隔的偶极子形式的导电图案,每个偶极子由相应的槽分叉,并且其中心部分由导体元件连接, 导体元件的一半设置有两个间隔开的凹口。 同轴馈线电缆的外导体连接到导体元件的连接区,其内导体穿过一个孔,并连接到PCB相对侧的传输线元件。 电镀通孔将传输线元件连接到偶极子。 该布置允许基本上相同的电流幅度流入每个偶极子的每一半,从而提供馈送装置的辐射图案的期望的最佳对称性。
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