LTE230数字中频接收机的设计  

Design of a digital IF receiver for LTE230

作　　者：周春良 周芝梅 王连成 冯曦 刘亮 唐晓柯 

机构地区：[1]北京智芯微电子科技有限公司国家电网公司重点实验室电力芯片设计分析实验室,北京100192 [2]北京智芯微电子科技有限公司北京市电力高可靠性集成电路设计工程技术研究中心,北京100192

出　　处：《电子技术应用》2017年第9期46-49,共4页Application of Electronic Technique

摘　　要：针对230 MHz频段频点分布离散、带宽窄、无法直接进行高速数据传输的问题,设计出一种新型的低成本、高可靠性、高性能的数字中频接收机。该接收机采用两级数字下变频、下采样、滤波结构,实现了对230 MHz频段40个离散频点的聚合,从而达到宽带传输的效果。经仿真及FPGA验证通过后,该接收机已应用到LTE230无线通信基带芯片并在试点项目中长时间稳定运行,充分表明数字中频接收机的设计是很成功的。Aiming at the problem of high speed data transmission unreachable directly due to discrete distribution and narrow band-width of frequency point on 230 MHz frequency band, a new type of low cost, high reliability and high performance digital IF( Intermediate Frequency) receiver is designed. The receiver adopts two-stage digital down conversion, down sampling and filtering structure, and it can aggregate 40 discrete frequency points on 230 MHz frequency band to obtain broadband transmission effect.After passing simulation and FPGA verification, the receiver has been used to LTE230 wireless communication baseband chip and runs stably for a long time in pilot project, it fully indicates the design of digital IF receiver is successful.

关 键 词：LTE230 数字中频接收机 数字下变频 下采样 滤波器 

分 类 号：TN851[电子电信—信息与通信工程]