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1.发明授权Antenna system and method to transmit cross-polarized signals from a common radiator with low mutual coupling 有权从具有低互耦的公共散热器传输交叉极化信号的天线系统和方法公开(公告)号：US07839351B2
公开(公告)日：2010-11-23
申请号：US11698065
申请日：2007-01-26
摘要： A dual-port IBOC® antenna provides omnidirectional radiation of orthogonal, circularly polarized analog (FM) and digital (OFDM) signals using quadruple coplanar square loops driven from a hybrid having balanced outputs. The loops are arranged in a tiled square, with proximal sides functioning as further stripline hybrids to cancel cross coupling between the loops. Each loop quad is reflector-backed and emits a directional signal; multiple loop quads oriented radially form an omni bay. Vertical spacing between bays includes a minimum position for mutual coupling, while symmetry establishes uniform input impedance on the hybrid input ports. Tuning barbs on the loops fine tune frequency response. Bandwidth is wide, so that a single antenna can radiate multiple FM analog and hybrid IBOC® channels over the VHF FM radio broadcast band.
摘要翻译： 双端口IBOC®天线使用从具有平衡输出的混合器驱动的四阶共面方波，提供正交，圆偏振模拟（FM）和数字（OFDM）信号的全向辐射。 环形布置在平铺的方形中，近侧用作进一步的带状线杂交体以消除环之间的交叉耦合。 每个环形四边形都是反射器支撑的，并且发出定向信号; 多环形四边形径向地形成全向海湾。 托架之间的垂直间距包括用于相互耦合的最小位置，而对称性在混合输入端口上建立均匀的输入阻抗。 调谐倒钩上的倒钩微调频率响应。 带宽宽，使得单个天线可以通过VHF FM无线电广播频带辐射多个FM模拟和混合IBOC®频道。
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公开(公告)号：US5455548A
公开(公告)日：1995-10-03
申请号：US202997
申请日：1994-02-28
CPC分类号： H01P1/045
摘要： The rigid coaxial transmission line disclosed herein is made up of multiple sections having outer conductors which are joined together at flanges and make up a desired length. Rather than being of equal length, the sections vary in length progressively to prevent the reflections caused by the flanges from accumulating at any frequency within the band at which the transmission line is to operate.
摘要翻译： 本文公开的刚性同轴传输线由具有外部导体的多个部分组成，外部导体在法兰处连接在一起并构成期望的长度。 而不是长度相同，这些部分的长度逐渐变化，以防止由法兰引起的反射在传输线要运行的频带内的任何频率处累积。
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公开(公告)号：US5401173A
公开(公告)日：1995-03-28
申请号：US203273
申请日：1994-02-28
CPC分类号： H01R9/0503 , H01R35/02 , H02G5/002 , H02G5/068
摘要： The coaxial connector disclosed herein accommodates differential expansion between inner and outer conductors in a multi-section run of coaxial transmission line by utilizing a coupler assembly which connects adjacent inner conductors, one of the inner conductors being fixedly connected to the coupler with axial movement being permitted with respect to the other inner conductor. Electrical connection between the coupler and the movable conductor is established at a single axial position by an annular conductive spring member while longitudinal alignment is maintained over the rest of the length of the coupler by insulating rings set into annular grooves. A tubular shield extends from the coupler over the adjacent end of the movable inner conductor without electrical contact. The axial length of the shield is larger than the differential expansion which occurs between inner and outer conductor sections. The shield masks the gap at end of the movable inner conductor which is otherwise variable with differential expansion and thereby minimizes the changes in impedance at the connector.
摘要翻译： 本文中公开的同轴连接器通过利用连接相邻的内部导体的耦合器组件来容纳在同轴传输线的多段运行中的内部和外部导体之间的差分膨胀，其中一个内部导体固定地连接到耦合器，并且允许轴向运动 相对于另一个内部导体。 耦合器和可动导体之间的电气连接通过环形导电弹簧构件在单个轴向位置处建立，同时通过设置成环形凹槽的绝缘环将纵向对准保持在耦合器的其余长度上。 管状护罩从可动内导体的相邻端部处的耦合器延伸而没有电接触。 屏蔽件的轴向长度大于在内部和外部导体部分之间发生的差动膨胀。 屏蔽罩在可移动内部导体的端部掩盖间隙，否则可以用差分扩展来变化，从而使连接器处的阻抗变化最小化。
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4.发明授权Compact high power, high directivity, waveguide directional coupler utilizing reactively loaded junction 失效紧凑型高功率，高方向性，波导定向耦合器利用反应加载的结
公开(公告)号：US5043684A
公开(公告)日：1991-08-27
申请号：US429540
申请日：1989-10-31
申请人： Henry Downs , Richard I. Bibber
发明人： Henry Downs , Richard I. Bibber
IPC分类号： H01P5/18
CPC分类号： H01P5/182
摘要： A directional coupler for coupling r.f. energy in a waveguide system from a main channel waveguide to a subsidiary channel waveguide, the coupling being in the range between about -3 dB to -15 dB. The coupler comprises a single coupling slot at the junction between the main channel waveguide and the subsidiary channel waveguide with an arrangement for decoupling the slot to yield the desired coupling, the arrangement including first and second posts in the plane of the junction. A further provision involves inductively loading the junction, the loading being provided at the plane of the junction. The provision for inductively loading the junction is an "inverted" button, in the form of capped-off holes, the depth of the holes being adjusted to vary the directivity of the coupler.
摘要翻译： 用于耦合r.f.的定向耦合器 从主通道波导到辅助通道波导的波导系统中的能量，耦合在约-3dB至-15dB之间的范围内。 耦合器包括在主通道波导和辅助通道波导之间的连接处的单个耦合槽，具有用于去耦合槽以产生期望的耦合的布置，该布置包括在结的平面中的第一和第二柱。 进一步的设置涉及电感加载接头，负载设置在接头的平面处。 用于感应加载接头的设置是“倒置的”按钮，以封闭孔的形式，调整孔的深度以改变耦合器的方向性。
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