【摘要】 集成电路和系统级封装中的隔离器位于电源网与有源器件之间,保证有源电路的直流偏置和射频隔离,且其拓扑形状与电源网结构适配为宜。针对传统的隔离器形状复杂、设计繁琐、难以嵌入电源网的问题,提出一种楔形隔离器。其拓扑结构形似集成电路条状电源网络,由外臂、底轨和内轨组成,根据阻带频率决定内轨的位置。当外臂张角一定时,无论内轨位置如何,都能使隔离器在阻带内表现出很高的输入阻抗。使用三维电磁场仿真对设计思想进行验证,并使用印刷电路工艺设计原型隔离器进行实测。仿真和测试结果证明了隔离器的有效性。它的结构简单,非常适合通过修改芯片电源网局部形状来实现。其设计过程便捷,即使数字工程师也能轻松操作。更多还原

【Abstract】 Chokes in integrated circuits and system in packages are used between power grids and active devices. It can maintain DC biasing and RF isolation of active circuit, and its topological structure should match power network structure. In this paper, a wedge-shaped choke is proposed to solve the problem of complicated shape, complicated design procedure and difficulty in embedding power network of conventional RF choke. Its topological structure is similar to strip power grid. The choke consists of an outer arm and an internal rail whose location can be determined by stop-band frequency. The choke exhibits high input impedance in the stop-band once the flare angle of outer arms is at an appropriate value. The design idea is validated by HFSS electromagnetic field simulation. The prototype of the choke is fabricated using printed circuit technology. Both simulation and measurement prove the effectiveness of the choke. Its structure and design process are simple, and it can be easily embedded in IC chip. Even digital engineers can easily implement it.更多还原