发表机构
Bangladesh University of Engineering and Technology; University of North Carolina at Charlotte（孟加拉国工程技术大学; 北卡罗来纳大学夏洛特分校）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究提出一种单导体微波互连，通过周期性碎片化金属岛并利用奇对称赝表面等离激元模式，实现电磁透射与热隔离，热导率较连续微带线降低40倍。
AI 中文摘要
在标准双导体微波传输线中，信号迹线和宽接地平面均沿传播方向充当寄生热泄漏路径。为防止这种热泄漏，我们设计了一种单导体微波互连：完全移除接地平面，并将剩余的信号迹线周期性碎片化为物理隔离的金属岛。我们表明，尽管相邻金属岛之间存在电流隔离，一种具有特定对称性的表面受限模式——奇对称赝表面等离激元极化子——仍能在此周期性单导体介质中传播。这种奇对称性在波导中心线处产生电磁场零点，从而允许在单导体波导上沿周期性间隔完全移除金属而不影响电磁传播。对制造原型的测量证实了尽管导体存在物理碎片化，传输响应依然保持，在5-6.5 GHz通带内去嵌入传播损耗约为0.0031 dB/mm。时域表征验证了1 Gbps幅度调制数据传输，群延迟变化小于145 ps。耦合电热仿真得出有效热导率为0.336 W/m*K，相较于相同占地的连续微带线降低了40倍。
英文摘要
In a standard two-conductor microwave transmission line, both the signal trace and the wide ground plane act as parasitic heat leakage paths along the propagation direction. To prevent this heat leakage, we devised a single-conductor microwave interconnect: the ground plane is removed entirely and the remaining signal trace is periodically fragmented into physically isolated metallic islands. We show that despite the galvanic isolation between adjacent metal islands, a surface confined mode of specific symmetry, the odd-symmetric spoof surface plasmon polariton, propagates through this periodic, single-conductor medium. This odd symmetry imposes an electromagnetic field null at the waveguide centerline, allowing complete removal of the metal at periodic intervals along the single-conductor waveguide without impacting EM propagation. Measurements on fabricated prototypes confirm the transmission response despite the physical fragmentation of the conductor, with de-embedded propagation loss of ~0.0031 dB/mm across a 5-6.5 GHz passband. Time-domain characterization verifies 1 Gbps amplitude-modulated data transmission with less than 145 ps group delay variation. Coupled electro-thermal simulation yields an effective thermal conductivity of 0.336 W/m*K, a 40x reduction relative to a continuous microstrip line of identical footprint.
