基于LGA工艺的D波段微带线-波导过渡结构

A D-band transition from microstrip to waveguide based on LGA technology

设计了一个工作于D波段的微带转波导结构。过渡结构由2部分组成,分别为微带-带状线过渡结构和带状线-波导过渡结构。相比传统的微带至波导结构,该结构无需额外的金属波导短路结构,减少了加工流程,直接和标准波导相连即可。仿真结果表明,在122~140 GHz范围内,反射系数小于-10 dB,最小插入损耗为1.85 dB。该过渡结构基于栅格阵列(LGA)封装工艺,能够直接与其他的芯片和无源器件进行集成和封装,对射频微系统的集成具有重要意义。

A transition structure from microstrip to waveguide, based on Land Grid Array(LGA) package technology, is designed in this paper. The structure consists of microstrip to stripline transition and stripline to waveguide transition. The metal waveguide shorter is no needed in the transition, thus the manufacturing process is simplified and the standard waveguide can connect with this transition directly. Simulation result shows that the minimal insertion loss is 1.85 dB and the return loss is less than -10 dB in 122-140 GHz. In addition, this transition can be integrated with other chips and passive devices. Therefore, the transition is useful for the improvement of property of RF microsystem.