(Peer-Reviewed) Active odd-mode-metachannel for single-conductor systems
Pei Hang He 何沛航 ¹ ², Ling Yun Niu 牛凌云 ¹ ², Yi Fan 范轶 ¹ ², Hao Chi Zhang 张浩驰 ¹ ², Le Peng Zhang 张乐鹏 ¹ ², Dayue Yao 姚大悦 ¹ ², Wen Xuan Tang 汤文轩 ¹ ², Tie Jun Cui 崔铁军 ¹ ²
¹ State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
中国 南京 东南大学毫米波国家重点实验室
² Institute of Electromagnetic Space, Southeast University, Nanjing 210096, China
中国 南京 东南大学电磁空间科学与技术研究院
Opto-Electronic Advances, 2022-06-30

Although tremendous efforts have been devoted to investigating planar single-conductor circuits, it remains challenging to provide tight confinement of electromagnetic field and compatibility with active semi-conductor components such as amplifier, harmonic generator and mixers. Single-conductor spoof surface plasmon polariton (SSPP) structure, which is one of the most promising planar single-conductor transmission media due to the outstanding field confinement, still suffers from the difficulty in integrating with the active semi-conductor components.

In this paper, a new kind of odd-mode-metachannel (OMM) that can support odd-mode SSPPs is proposed to perform as the fundamental transmission channel of the single-conductor systems. By introducing zigzag decoration, the OMM can strengthen the field confinement and broaden the bandwidth of odd-mode SSPPs simultaneously. More importantly, the active semi-conductor amplifier chip integration is achieved by utilizing the intrinsic potential difference on OMM, which breaks the major obstacle in implementing the single-conductor systems.

As an instance, an amplifier is successfully integrated on the single-conductor OMM, which can realize both loss compensation and signal amplification. Meanwhile, the merits of OMM including crosstalk suppression, low radar cross section (RCS), and flexibility are comprehensively demonstrated. Hence, the proposed OMM and its capability to integrate with the active semi-conductor components may provide a new avenue to future single-conductor conformal systems and smart skins.
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