Multi-mode filter with dielectric resonators based on additive manufactured ceramics

高频滤波器是通信系统的重要核心部件，在数字化时代显得尤为重要。不同的应用需要提供不同的通信频带。信号的过滤是必不可少的。介质谐振器是高频滤波器结构紧凑、损耗低的重要组成部分。多模谐振器适合于进一步减小部件的所需体积和质量。然而，相应的结构不能用经典的谐振器和制造技术来实现。使用增材制造陶瓷实现谐振器开辟了迄今为止仅被认为是基本的新可能性。制造过程要求必须考虑滤波器/谐振器的设计策略。这一点，以及寻找新的三维结构，将在本研究项目进行调查。

High-frequency filters are important core components for communication systems, which have become very important in times of digitalization. Different applications require the provision of different communication bands. The filtering of the signals is essential. Dielectric resonators are indispensable to make the high frequency filters compact and low-loss. Multi-mode resonators are suitable to further decrease the required volume and mass of the component. However, the corresponding structures cannot be realized with classical resonators and manufacturing techniques. The realization of resonators using additive manufactured ceramics opens up new possibilities that have only been considered rudimentary so far. The manufacturing process requires design strategies for the filters / resonators which must be taken into account. This, as well as the search for novel three-dimensional structures, will be investigated in this research project.