A Compact Wideband Planar Magic Tee for Monopulse Antenna Array Applications
A Compact Wideband Planar Magic Tee for Monopulse Antenna Array Applications
复制标题
用于单脉冲天线阵列应用的紧凑型宽带平面 Magic Tee
DOI：
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发表时间：
2021
影响因子：
3
通讯作者：
Y. Verma
中科院分区：
文献类型：
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作者：
D. Nagaraju;Y. Verma
本文介绍了一种适用于Ku波段单脉冲波导缝隙天线阵的小型、宽带、平面、E臂折叠式魔T天线。一种新颖的阻抗匹配结构，一个L形的隔膜，实现在魔术T形连接，这导致在所有端口的阻抗带宽。该隔膜的高度与波导高度相同，这使得设计非常紧凑。回波损耗为20 dB时，阻抗带宽为22%。魔术T是使用高精度电火花加工（EDM）工艺制造的，然后使用银环氧树脂粘合子部件的集成。仿真和实测结果进行了比较。实测幅度平衡< 0.1 dB，相位平衡<2°，隔离度优于−35 dB。该设计方法为单脉冲天线阵列中宽带、小型化单脉冲比较器的设计提供了一种很好的方法。
This letter presents a compact, wideband, planar, E-arm folded magic tee at $Ku$ -band for monopulse slotted waveguide antenna array applications. A novel impedance matching structure, an L-shaped septum, is implemented at the magic tee junction, which results in wide impedance bandwidth at all ports. The height of this septum is the same as that of the waveguide height, which allows the design to be very compact. An impedance bandwidth of 22% is achieved for a return loss of 20 dB. The magic tee is manufactured using a high-precision electric discharge machining (EDM) process and followed by the integration of subparts using silver epoxy bonding. Simulation and measured results are compared. Measured amplitude balance of < 0.1 dB, phase balance of <2°, and isolation of better than −35 dB have been achieved. The proposed design is a good technique for the design of broadband, miniaturized monopulse comparators for monopulse antenna array applications.