CRLH–CRLH C-Section Dispersive Delay Structures With Enhanced Group-Delay Swing for Higher Analog Signal Processing Resolution
CRLH–CRLH C-Section Dispersive Delay Structures With Enhanced Group-Delay Swing for Higher Analog Signal Processing Resolution
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DOI：
10.1109/tmtt.2012.2224362
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发表时间：
2012-11
影响因子：
4.3
通讯作者：
Shulabh Gupta;Dimitrios L. Sounas;Hoang V. Nguyen;Qingfeng Zhang;Christophe Caloz
中科院分区：
文献类型：
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作者：
Shulabh Gupta;Dimitrios L. Sounas;Hoang V. Nguyen;Qingfeng Zhang;Christophe Caloz
提出了一种基于复合右/左手（CRLH）-CRLH 耦合器的新型色散延迟结构（DDS），并通过全波和实验结果进行了演示。实验原型是采用低温共烧陶瓷技术实现的紧凑且屏蔽的多层 DDS。与传统的全通 C 形截面 DDS 相比，所提出的 CRLH C 形截面 DDS 表现出更大的群延迟摆幅，由于其更高的耦合能力，这在模拟信号处理应用中带来了更高的分辨率。此外，它们还具有更大的带宽和更小的尺寸。提出了广义的波干扰分析，以严格推导剖腹形 DDS 的传递函数和群延迟特性，并提供对其左手和右手状态下的操作机制的更深入的了解。
A novel dispersive delay structure (DDS) based on a composite right/left-handed (CRLH)-CRLH coupler is proposed and demonstrated by both full-wave and experimental results. The experimental prototypes are compact and shielded multilayer DDSs implemented in low-temperature co-fired ceramics technology. Compared to the conventional all-pass C-section DDS, the proposed CRLH C-section DDS exhibit a larger group-delay swing, which leads to higher resolution in analog signal processing applications, as a result of their higher coupling capability. Moreover, they feature a larger bandwidth and a smaller size. A generalized wave-interference analysis is presented to both rigorously derive the transfer functions and group-delay characteristics of C-section DDSs and provide deeper insight into their operating mechanisms in both their left- and right-handed regimes.