Synthesis of Cross-Coupled Reduced-Order Dispersive Delay Structures (DDSs) With Arbitrary Group Delay and Controlled Magnitude
Synthesis of Cross-Coupled Reduced-Order Dispersive Delay Structures (DDSs) With Arbitrary Group Delay and Controlled Magnitude
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DOI：
10.1109/tmtt.2013.2241785
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发表时间：
2013-01
影响因子：
4.3
通讯作者：
Qingfeng Zhang;D. Sounas;C. Caloz
中科院分区：
文献类型：
--
作者：
Qingfeng Zhang;D. Sounas;C. Caloz
首次提出了一种用于模拟信号处理的可控幅度交叉耦合色散延迟结构（dds）的系统合成方法。该方法采用多项式展开法合成传递函数，实现了对DDS的幅值和群延迟响应的独立控制。与先前报道的线性相位滤波器合成技术相比，合成传递函数的阶数也降低了一半。一旦它被构造，传递函数被转换成耦合矩阵，可以在任意交叉耦合谐振器技术中实现。给出了不同规定群延迟响应的几个设计实例。演示了一个实验波导原型。实测响应与规定响应之间的一致性证明了所提出的合成方法。
For the first time, a systematic synthesis method for cross-coupled dispersive delay structures (DDSs) with controlled magnitude for analog signal processing applications is proposed. In this method, the transfer function is synthesized using a polynomial expansion approach, which allows to separately control the magnitude and group-delay response of the DDS. The synthesized transfer function also features a reduced order-namely, half-compared to that of previously reported synthesis techniques for linear-phase filters. Once it has been constructed, the transfer function is transferred into coupling matrices that can be implemented in arbitrary cross-coupled-resonator technologies. Several design examples are provided for different prescribed group-delay responses. An experimental waveguide prototype is demonstrated. The agreement between the measured and prescribed responses illustrates the proposed synthesis method.