基于微波多层板的小型化多通道接收前端设计

摘要

Based on microwave multilayer boards technology,a further miniaturized multi-channel receiver front-end is designed and successfully developed after optimization for micro-assembly process of mono-lithic microwave integrated circuit(MMIC),micro-electro-mechanical system(MEMS) and low tempera-ture cofired ceramic( LTCC) filters. Circuit and structure are improved in this design to obtain higher am-plitude-phase consistency and isolation in receiver front-end. Finally the size of the C-band four-channel receiver front-end is only 120 mmí50 mmí12 mm, amplitude and phase consistencies are better than±0. 8 dB and ±5o,the isolation between channels is better than 60 dBc. The proposed design method pro-vides an effctive solution for engineering application of miniaturized multi-channel receiver front-end.%基于微波多层板技术,通过对单片微波集成电路( MMIC)、微机电系统( MEMS)和低温共烧陶瓷( LTCC)滤波器等微组装工艺的优化和分析,使多通道接收前端进一步实现小型化设计和应用。同时,对电路和结构进行改进,使前端组件具有更好的幅相一致性和高隔离度。最终实现的C频段四通道接收前端尺寸为120 mm×50 mm×12 mm,幅相一致性分别小于±0.8 dB和±5º,通道间隔离度高于60 dBc。该设计方法的实现为小型化多通道接收前端的工程化应用提供了一种有效的解决方案。