摘要
针对电流耦合型人体通信的特点,以FPGA为平台,分别设计出基于DDS的2CPFSK调制器、全数字锁相环位同步电路和信号解调器。此外,外围电路实现了发送端低通滤波、信号保持和接收端前处理等功能。最后对电流耦合型人体通信收发器的进行人体实验。实验结果表明收发器满足设计要求,可以实现数字基带信号在人体内的传输。
Based on the FPGA platform, the 2CPFSK modulator and demodulator, all digital phase locked loop （ADPLL） bit synchronization circuit were designed. Also the peripheral circuits with the functions, such as low pass filter, signal hold with transmitter and preprocess of receiver were completed. Finally, the clinic trial was conducted. The results indicated the transreceiver was satisfied with the design requires and the digital base-band signal could be transmitted through the human body reliably.
出处
《电子技术应用》
北大核心
2011年第12期90-93,97,共5页
Application of Electronic Technique
基金
国家自然科学基金项目(51047001)
福建省教育厅项目(JK2010006)
澳门科技发展基金(024/2009/A1)
关键词
人体通信
电流耦合
收发器
FPGA
位同步
intra-body communication
galvanic coupling
transceiver
FPGA
bit synchronization
