便携式数字B超收发电路的设计与实现  

Design and implementation of a transceiver circuit for portable digital ultrasonic imaging equipments

作　　者：蒲杰[1] 李平[1] 吴文焘[1] 吕燚[1] 

机构地区：[1]中国科学院声学研究所医用声学实验室,北京100190

出　　处：《应用声学》2011年第2期145-152,共8页Journal of Applied Acoustics

基　　金：中国科学院知识创新工程重要方向项目(KGCX2-YW-915)资助

摘　　要：本文通过不同方案对比,综合权衡信号质量、功耗、面积和成本等因素,提出并实现了一种数字化便携式B超的收发电路设计。在总体结构的基础上,重点分析、介绍了高压开关、收发隔离选通和控制逻辑部分的设计方案,并给出了初步测试和实验结果。设计及测试结果表明设计的便携式B超前端收发电路具有体积小、结构简单、通道一致性好等优点,具有较高的信号质量及较低的信号失真度,并保持较低的功耗,能够实现编码发射;达到了设计目标。As a comparison of different schemes,a transceiver circuit is proposed and implemented which trades off in terms of signal quality,power consumption,size and cost,etc. Based on the overall structure,the high-voltage switch,isolation circuit and control logic design are discussed in detail.The results of primary tests and experiments are shown that the proposed circuit has a small size,a simple structure and good consistency among different channels with high signal quality and low signal distortion.Besides,the circuit can realize coded exciting while maintaining low power consumption.

关 键 词：B超 FPGA 收发电路 

分 类 号：TN402[电子电信—微电子学与固体电子学]