Three-dimensional radio-frequency transformers based on a self-rolled-up membrane platform
Three-dimensional radio-frequency transformers based on a self-rolled-up membrane platform
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DOI：
10.1038/s41928-018-0073-5
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发表时间：
2018-05-01
影响因子：
34.3
通讯作者：
Li, Xiuling
中科院分区：
文献类型：
--
作者：
Huang, Wen;Zhou, Jingchao;Li, Xiuling
射频集成电路用于无线通信，需要能够以射频/微波频率传输电能的变压器。传统的片上射频变压器设计具有复杂的制造方案和有限的性能可扩展性。在这里，我们报告了基于自卷膜平台的片内RF/微波变压器。该平台的单片特性和多功能性使我们能够创建高性能的变压器，同时保持超紧凑的器件占地面积，并且只使用平面处理。我们还表明，与传统的平面设计相比，三维射频变压器的性能随着比例的增加而提高。特别是，我们观察到，随着我们扩大匝数比，我们的射频变压器的性能指数持续增长。这种行为归因于自卷膜三维结构所固有的近乎理想的互磁耦合。
Radio-frequency (RF) integrated circuits are used for wireless communications and require transformers capable of transferring electrical energy at RF/microwave frequencies. Traditional on-chip RF transformer designs have complex fabrication schemes and offer limited performance scalability. Here we report on-chip RF/microwave transformers that are based on a self-rolled-up membrane platform. The monolithic nature and versatility of this platform allows us to create high-performance transformers while maintaining an ultra-compact device footprint and by using only planar processing. We also show that the performance of the three-dimensional RF transformers improves with scaling, which is in contrast to conventional planar designs. In particular, we observe a continuous rate of increase in the index of performance of our RF transformers as we scale up the turns ratio. This behaviour is attributed to the almost ideal mutual magnetic coupling inherent to the self-rolled-up membrane three-dimensional architecture.