Stettler Silvan, Villanueva Luis Guillermo
Advanced Nanoelectromechanical Systems Laboratory, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.
Microsyst Nanoeng. 2025 Jul 1;11(1):131. doi: 10.1038/s41378-025-00980-w.
Data rates and volume for mobile communication are ever-increasing with the growing number of users and connected devices. With the deployment of 5G and 6G on the horizon, wireless communication is advancing to higher frequencies and larger bandwidths enabling higher speeds and throughput. Current micro-acoustic resonator technology, a key component in radiofrequency front-end filters, is struggling to keep pace with these developments. This work presents an acoustic resonator architecture enabling multi-frequency, low-loss, and wideband filtering for the 5G and future 6G bands located above 3 GHz. Thanks to the exceptional performance of these resonators, filters for the 5G n77 and n79 bands are demonstrated, exhibiting fractional bandwidths of 25% and 13%, respectively, with low insertion loss of around 1 dB. With its unique frequency scalability and wideband capabilities, the reported architecture offers a promising option for filtering and multiplexing in future mobile devices.
随着用户和连接设备数量的不断增加，移动通信的数据速率和数据量也在不断增长。随着5G和6G即将部署，无线通信正在向更高频率和更大带宽发展，以实现更高的速度和吞吐量。当前的微声学谐振器技术作为射频前端滤波器的关键组件，正难以跟上这些发展步伐。这项工作提出了一种声学谐振器架构，可为位于3GHz以上的5G及未来6G频段实现多频、低损耗和宽带滤波。由于这些谐振器的卓越性能，展示了用于5G n77和n79频段的滤波器，其分数带宽分别为25%和13%，插入损耗约为1dB。凭借其独特的频率可扩展性和宽带能力，所报道的架构为未来移动设备中的滤波和复用提供了一个有前景的选择。
