28GHz-Band 2x2 Patch Antenna Module Vertically Integrated with a Compact 2-D BFN in Broadside Coupled Stripline Structure
28GHz-Band 2x2 Patch Antenna Module Vertically Integrated with a Compact 2-D BFN in Broadside Coupled Stripline Structure
复制标题
28GHz 频段 2x2 贴片天线模块与宽边耦合带状线结构中的紧凑型 2-D BFN 垂直集成
DOI：
10.1109/apmc52720.2021.9661968
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Suematsu Noriharu
中科院分区：
文献类型：
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作者：
Temga Jean;Machii Taiki;Shiba Takashi;Suematsu Noriharu
本文介绍了一种小型化的28ghz波段二维波束形成网络（BFN）的设计、实现，以及用于毫米波通信的2x2贴片阵列天线的垂直集成。天线模块是在一个薄的5层松下Megtron6基板上实现的。基板由用于天线设计的上层（4-5）和下层（1-4）组成，下层形成用于设计与阵列天线隔离的2-D BFN的宽侧耦合带状线结构。宽边耦合带状线具有紧密耦合和低衰减的特点，可以设计出紧凑的宽带3dB/90°宽边带状线耦合器。所提出的二维BFN由四个3dB/90°宽侧带状线耦合器组成，通过非常短的带状线相互连接，并排列形成紧凑的平面方形拓扑BFN。二维BFN的实际面积仅为0.3λ0×0.3λ0×0.08λ0which，很容易集成在2x2阵列天线面积（0.9λ0×0.8λ0×0.08λ0）下，实现了模块结构的小型化。元素分离度设为0.6λ0。制作了二维BFN和天线模块的样机并进行了测试，验证了仿真结果的有效性。
This paper presents a miniaturized 28GHz-band 2-D Beamforming Network (BFN) design, implementation, and vertical integration with a 2x2 patch array antenna for mmWave communications. The antenna module is realized in a thin 5-layers Panasonic Megtron6 substrate. The substrate is composed of upper layers (4-5) for the antenna design and lower layers (1-4) which form the broadside coupled stripline structure used to design the 2-D BFN isolated from the array antenna. The broadside coupled stripline has the characteristic of tight coupling and low attenuation which allow the design of a compact and wideband 3dB/90° broadside stripline coupler. The proposed 2-D BFN consists of four 3dB/90° broadside stripline couplers interconnected by very short striplines and arranged to form a compact, planar and square topology BFN. The actual area of the 2-D BFN is only 0.3λ0×0.3λ0×0.08λ0which is easily integrated under the 2x2 array antenna area (0.9λ0×0.8λ0×0.08λ0) realizing a miniaturized module structure. The element separation is set to 0.6λ0. A prototype of the 2-D BFN and the antenna module have been fabricated and measured, showing the validity of the simulation results.