Miniaturized Liquid Crystal Slow Wave Phase Shifter Based on Nanowire Filled Membranes
Miniaturized Liquid Crystal Slow Wave Phase Shifter Based on Nanowire Filled Membranes
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DOI：
10.1109/lmwc.2018.2845938
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发表时间：
2018-06
影响因子：
3
通讯作者：
M. Jost;J. S. K. Gautam;L. Gomes;R. Reese;E. Polat;M. Nickel;J. M. Pinheiro;A. Serrano;H. Maune;G. Rehder;P. Ferrari;R. Jakoby
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文献类型：
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作者：
M. Jost;J. S. K. Gautam;L. Gomes;R. Reese;E. Polat;M. Nickel;J. M. Pinheiro;A. Serrano;H. Maune;G. Rehder;P. Ferrari;R. Jakoby
本文介绍了一种小型化的V波段液晶慢波移相器的实现.它基于微带拓扑结构，其中接地平面由填充有金属纳米线的多孔氧化铝膜实现，所有这些都通过膜背面的金属接地平面彼此连接。虽然磁场可以几乎不受干扰地通过纳米线，但电场被限制在信号电极和纳米线的尖端之间。去嵌入后，弯折线移相器的匹配始终优于−10 dB，同时在40至67 GHz范围内的插入损耗在1.5至2.5 dB之间。这导致无源移相器的品质因数为33 dB至45°/dB，相移为55°-100°。
This letter presents the realization of a miniaturized liquid crystal slow wave phase shifter at $V$ -band. It is based on a microstrip topology, where the ground plane is realized by a porous alumina membrane filled with metallic nanowires, all of them being connected with each other by a metallic ground plane at the membrane’s back. While the magnetic field can pass the nanowires almost unperturbed, the electric field is confined in between the signal electrode and the tips of the nanowires. After deembedding, the meander line phase shifter shows a matching always better than −10 dB, while exhibiting an insertion loss between 1.5 and 2.5 dB from 40 to 67 GHz. This results in a figure-of-merit for passive phase shifters of 33 dB to 45°/dB, accompanied with a phase shift of 55°–100°.