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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >180 hybrid using a novel planar balun on suspended substrate for beam forming network applications
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180 hybrid using a novel planar balun on suspended substrate for beam forming network applications

机译：180混合用新颖的平面平面板在悬挂基板上的悬浮基板，用于形成网络应用

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摘要

In this paper, a 180 hybrid consisting of a broadband balun and a T-junction in-phase power divider is proposed. The 180 hybrid is intended for operation in the C-band. The balun resembles a center tapped magnetic transformer where the coils are replaced by broadside-coupled lines. This new technique allows magnetic couplers to be realized by planar structures at microwave frequencies. The planar balun is broadband, and the size reduction is considerable. The broadside-coupled lines are on a suspended substrate. The proposed structure can be used in the beam forming networks of the multiple-beam antennas. It also prevents cross connections in the conventional beam forming networks. The planar balun is analyzed by the signal flow graph method. The scattering parameters of the 180 hybrid are calculated by the multiport connection method. Some design formulas for the construction of the balun are presented. The 3-dimensional model of the planar 180 hybrid is simulated by a full-wave simulator. Measurement results of the fabricated hybrid approve the simulation results. The 180 hybrid exhibits a relative bandwidth of 45% centered at 4.5 GHz. In the operating band, the amplitude and phase imbalance of the output ports are <0.6 dB and <10, respectively.
机译：在本文中，提出了由宽带平衡和T型相位功率分配器组成的180个混合动力。 180个混合动力车用于在C波段中操作。巴伦类似于中心螺纹磁力变压器，其中线圈由宽边耦合线代替。这种新技术允许通过微波频率的平面结构实现磁耦合器。平面板是宽带，减少尺寸相当可观。宽旁耦合线在悬浮基材上。所提出的结构可用于多光束天线的光束形成网络中。它还防止了传统波束形成网络中的交叉连接。通过信号流程图方法分析平面平面板。通过多端口连接方法计算180个混合动力车的散射参数。提供了一些设计公式的Balun。平面180混合动力车的三维模型由全波模拟器模拟。制造的混合动力车的测量结果批准了仿真结果。 180个混合动力器呈现45％的相对带宽，以4.5GHz为中心。在操作频带中，输出端口的幅度和相位不平衡分别为<0.6dB和<10。

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