基于LTCC的射频多器件融合设计研究

Modern wireless communication systems put forward stricter requirement to the miniaturization of the RF equipment and devices. Though a lot of progress have been achieved in the study of miniaturization of separate components in the last decades, further size reduction for the circuits is strictly difficult. In our project, various components are co-designed as a multi-functional device by using the low temperature co-fired ceramic (LTCC) multi-layer structures. The research focuses on the co-design of RF filters and other passive or active components which are coexisted in the RF front ends. The miniaturization of multi-functional devices can be realized by reducing the use of separate component, redundant circuits as well as the connecting and inter-stage matching structures. Meanwhile, the performance can be enhanced by making full use of the features of different components in the co-design. The research contents include, (1) The study of the LTCC resonators suitable for co-design applications, (2) The co-design of LTCC filters and other RF passive components, (3) The co-design of LTCC filters and RF active components. The research output of this project will facilitate the co-design of multiple components and the miniaturization of wireless systems. The applicant has studied the miniaturized resonators and filters, the co-designs of multiple components as well as the LTCC circuits previously. The applicant has also published 11 SCI and 7 EI papers and applied 9 patents of invention.

现代无线系统对设备及射频器件的小型化要求更加严格，过去的单器件研究虽已取得重大进展，但难以进一步减小尺寸。针对该问题，本项目基于低温共烧陶瓷（LTCC）技术的多层结构将多个射频器件融合设计为一个多功能器件，主要研究射频前端中的滤波器与其他无源/有源器件的融合设计，减少电路冗余和级间匹配及连接电路来实现小型化，同时利用不同器件的特性互补来提升性能。项目将基于电路单元传输函数的分析来研究多器件充分融合的设计方法，利用LTCC工艺进行电路设计验证，具体内容为：①适合于融合设计的LTCC谐振器研究；②LTCC滤波器与其他无源电路的融合设计方法；③LTCC滤波器与有源电路的融合设计方法。项目研究成果可为射频器件的小型化设计提供一个新思路和技术参考。申报人在谐振器及小型化滤波器、射频多器件融合设计和LTCC射频电路等方面有良好的前期基础，已发表SCI论文11篇，EI论文7篇，申请发明专利9项。

现代无线系统对射频器件及设备的小型化和高性能提出了更高要求，过去的单器件研究已取得重要进展，难以进一步减小尺寸及提升性能。针对该问题，本项目研究了基于低温共烧陶瓷（LTCC）技术的协同融合设计理论与方法，主要研究了射频前端中的滤波器与其他无源/有源器件的融合设计方法，减少电路冗余、级间匹配及连接电路来实现小型化，同时利用不同器件的特性互补来提升性能。项目基于电路单元传输函数的分析来研究多器件充分融合的设计方法，利用LTCC工艺进行了电路设计验证，具体内容为：①适合于融合设计的LTCC谐振器研究；②LTCC滤波器与其他无源电路的融合设计方法；③LTCC滤波器与有源电路的融合设计方法；④一些其他电路的融合设计方法。项目研究成果可为射频器件的小型化和性能提升设计提供一个新思路和技术参考。已发表SCI论文11篇，EI论文7篇，申请发明专利9项。