基于MEMS滤波器芯片的X波段混频通道设计  

Design and implementation of X-band single road′s frequency mixer channel based on MEMS filter

作　　者：刘博源[1] 徐军[1] 

机构地区：[1]电子科技大学物理电子学院,四川成都610054

出　　处：《电子技术应用》2017年第6期52-55,59,共5页Application of Electronic Technique

摘　　要：提出了基于MEMS滤波器芯片进行X波段接收模块小型化设计的方法,构成下变频电路,与本振功分电路、电源控制电路完成放大、滤波和增益控制功能,实现由X波段到L波段中频的小体积、低功耗四路下变频接收通道。利用电路分析与建模仿真,分解各部分电路的技术指标。各部分电路中最关键的是下变频电路,即混频放大链路,其中的射频开关滤波器和中频滤波器对通道整体性能至关重要,因此可以采用MEMS滤波器芯片设计来实现。MEMS滤波器芯片在性能、体积方面具有明显优势,用以实现的单路混频通道结构紧凑、功耗低,满足小型化、模块化和集成化的技术趋势与需求,适合在实际应用中推广。The method of miniaturizedly designing fiher based on MEMS chips for x-band receiving module was proposed in this paper, constituting a down-conversion circuit which consisted of a four-way down-conversion receiving channel from X band to L band channel in combination with the filter chips, LO-power divider and power-control circuit. It had functions of amplifying, filtering and gain-controling, featured with a small size and low power consumption. By circuit analysis, modeling and simulation ,the electrical specifications of the channel was decomposed to circuit units. The down-conversion circuit, acted as the mixing-power dividing chain, was the most important unit, which had two vital filters with MEMS chips structure, which is an RF switch filter and an IF fiher. So it can be achieved with MEMS filter chips design. The MEMS filter chips had obvious advantages on performance and size. And the mixer channel had low power consumption and a small volume, conforming to the technical development trend and demands of miniaturization, modularization and integration, which was suitable for the promotion in practical application.

关 键 词：混频 MEMS滤波器芯片 四路下变频接收通道 ADS 

分 类 号：TM724.1[电气工程—电力系统及自动化]