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    • 2. 发明授权
    • Broad band omnidirectional monocone antenna
    • 宽带全方位单声道天线
    • US5038152A
    • 1991-08-06
    • US524602
    • 1990-05-17
    • Mon N. WongSamuel S. WongGregory D. KroupaRobert C. Perpall
    • Mon N. WongSamuel S. WongGregory D. KroupaRobert C. Perpall
    • H01Q13/02H01Q19/08H01Q19/22
    • H01Q19/08H01Q13/02H01Q19/22
    • A broad band omnidirectional monocone antenna 10 having a wide operative frequency spectrum and a large elevation angle A is disclosed herein. The antenna 10 of the present invention includes an input circular waveguide network 12 and 18 for providing electromagnetic energy of at least one polarization. Coupled to the circular waveguide network 12 and 18 is a dielectric-loaded waveguide arrangement 22 for projecting a first electromagnetic beam. The inventive antenna 10 further includes a parasitic element network 32, 34, and 36 positioned in the path of the first beam. The parasitic element network 32, 34, and 36 is disposed to form a parasitic beam in response to the first beam. In a particular embodiment of the inventive antenna 10 a beam shaping cone 40 circumscribes the dielectric waveguide arrangement 22. The cone 40 is adapted to augment the elevation angle A characterizing the antenna 10 of the present invention by redirecting the parasitic beam.
    • 本文公开了具有宽的操作频谱和大仰角A的宽带全方位单声道天线10。 本发明的天线10包括用于提供至少一个极化的电磁能的输入圆形波导网络12和18。 耦合到圆形波导网络12和18是用于投射第一电磁束的电介质负载波导装置22。 本发明的天线10还包括位于第一光束的路径中的寄生元件网络32,34和36。 寄生元件网络32,34和36被布置成响应于第一光束形成寄生光束。 在本发明的天线10的特定实施例中,光束成形锥体40限定电介质波导装置22.锥体40适于通过重定向寄生光束来增强表征本发明的天线10的仰角A.
    • 3. 发明授权
    • Coaxial hybrid coupler and crossing element
    • 同轴混合耦合器和交叉元件
    • US4797643A
    • 1989-01-10
    • US111825
    • 1987-10-23
    • Mon N. WongSamuel S. Wong
    • Mon N. WongSamuel S. Wong
    • H01P5/12H01P5/18
    • H01P5/183
    • A microwave crossover by which an electromagnetic wave can crossover from one waveguide to another waveguide is formed completely within a planar structure having two hybrid couplers arranged in tandem with output ports of the first coupler connected to input ports of the second coupler. Each coupler is formed of an electrically conductive housing and two electrically conducting bars disposed therein and insulated therefrom. The bars are disposed in a common plane and are equally spaced from top and bottom walls of the housing. A central portion of each bar is angled relative to end portions of the bars to permit a crossing over of the bars at the central portions thereof. Each of the central portions is formed with a notch which engages with the notch of the other bar while maintaining a gap therefrom, the notches permitting the crossover to occur in the foregoing plane. Ends of the bars protrude through openings in the housing in the form of coaxial transmission lines. The crossing of the bars has the effect of a twist of central conductors of the coaxial lines resulting in a relocation of the ports of the coupler such that the two input ports are on an input side of the coupler, and two output ports are on an output side of the coupler. This arrangement of the ports permits the connection of two couplers in tandem to provide for the planar configuration of the microwave crossover.