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Millimeter-wave low-loss on-chip metamaterial for 5G communication based on non-periodic composite right-/left-handed transmission line
Applied Physics Letters ( IF 4 ) Pub Date : 2023-05-25 , DOI: 10.1063/5.0149039
Guangxu Shen, Chenyang Zhang, Wenjie Feng, Wenquan Che

This Letter reports a millimeter-wave low-loss on-chip metamaterial based on a concept of a non-periodic composite right-/left-handed (CRLH) transmission line (TL). Compared with a classic periodic unit cell, a non-periodic CRLH TL is proposed to obtain higher transmittance and better reflectivity. First, based on the CRLH TL theory, the LC values of the periodic transmission line were calculated. Second, Ti factors were derived using Chebyshev low-pass filter prototypes and the bandpass transformation theory. Third, these values were then used to calculate the factors of the non-periodic structure, which was eventually implemented using lumped elements. By analyzing the dispersion property, the proposed non-periodic CRLH metamaterial features both right-handed (forward wave) and left-handed (backward wave) propagating modes, which accounts for its wide bandwidth. For demonstration, a gallium arsenide-based integrated passive device process is adopted. As its main advantages, the fabricated metamaterial shows a high and flat transmission with minimum insertion loss of 0.68 dB at 30.2 GHz, and a low reflectivity better than −10 dB from 14 to 51 GHz of which the fraction bandwidth is over 120%.

中文翻译:

基于非周期复合右手/左手传输线的 5G 通信毫米波低损耗片上超材料

这封信报道了一种基于非周期复合右手/左手 (CRLH) 传输线 (TL) 概念的毫米波低损耗片上超材料。与经典的周期性晶胞相比,提出了非周期性 CRLH TL 以获得更高的透射率和更好的反射率。首先,基于CRLH TL理论,计算了周期传输线的LC值。其次,使用 Chebyshev 低通滤波器原型和带通变换理论导出 Ti 因子。第三,然后使用这些值计算非周期结构的因子,最终使用集总元件实现。通过分析色散特性,所提出的非周期性 CRLH 超材料具有右手(前向波)和左手(后向波)传播模式,这就是其宽带宽的原因。为了演示,采用了基于砷化镓的集成无源器件工艺。作为其主要优势,制造的超材料显示出高而平坦的传输,在 30.2 GHz 时插入损耗最小为 0.68 dB,在 14 至 51 GHz 范围内的反射率低于 −10 dB,其部分带宽超过 120%。
更新日期:2023-05-25
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