Differential magnetless circulator using modulated bandstop filters
Differential magnetless circulator using modulated bandstop filters
复制标题
使用调制带阻滤波器的差分无磁循环器
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
A. Alú
中科院分区：
文献类型：
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作者：
Ahmed Kord;D. Sounas;A. Alú
本文提出了一种差分式无磁环行器，该环行器由两个角动量偏置的单端环行器组成，每个环行器由三个一阶带阻LC滤波器组成，它们以三角形拓扑结构连接，并在时间上进行调制，彼此之间的相位差为120°。与单端结构相比，差分结构大大减少了偶数阶互调产物，改善了插入损耗，扩展了带宽，并显著降低了所需的调制频率。我们提出了这种环行器的理论，并用模拟和测量结果进行了验证。
In this paper, we present a differential magnetless circulator by combining two angular-momentum-biased single-ended circulators, each of which consists of three first-order bandstop LC filters connected in a delta topology and modulated in time with a phase difference of 120 deg between each other. Compared to a single-ended architecture, the differential one drastically reduces even-order intermodulation products, improves insertion loss, extends the bandwidth, and significantly decreases the required modulation frequency. We present the theory of such a circulator and validate it with simulated and measured results.