基于蓝牙技术的汽车手机准备系统电磁辐射抑制  

Electromagnetic radiation suppressed research of automotive mobile preparation system based on bluetooth technology

作　　者：吴定超[1] 高印寒[2] 樊宽刚[3] 王珂[1] 

机构地区：[1]吉林大学通信工程学院,长春130022 [2]吉林大学测试科学实验中心,长春130022 [3]吉林大学仪器科学与电气工程学院,长春130022

出　　处：《吉林大学学报（工学版）》2009年第6期1554-1558,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：高等学校博士学科点专项科研基金项目(20050183019);吉林省科技发展计划项目(20080532)

摘　　要：对电偶极子和高斯脉冲两种场源,运用FDTD(时域有限差分法)建立了数学模型,从时域和频域两个方面对基于蓝牙技术的汽车手机准备系统电磁辐射进行了分析研究。对两种不同频段(150kHz～30MHz和75～108MHz)的电磁辐射进行了分析,设计了抑制地漂和导线串扰的方法及其实现电路,通过仿真图像可以看出,该电路极大地抑制了手机准备系统的电磁辐射,电磁辐射强度平均降低了7.6dB,从而提高了手机准备系统的电磁兼容性,也验证了两种设计的有效性。FDTD（Finite Difference Time Domain method） is used to establish mathematical model and the radiation of the automotive mobile preparation system based on Bluetooth Technology is analysed on time domain and frequency domain for the electric dipole and Gaussian pulse.Two kinds of different frequency bands（150 K-30 M and 75 M-108 M） are analysed.The method and its circuits of ground drift and crosstalk suppression are designed.The simulation images have shown that it greatly suppressed the radiation of the mobile preparation systems.The intensity of electromagnetic radiation is reduced by an average 7.6 dB,thus it enhanced the electromagnetic compatibility of the mobile preparation system,also verified the effectiveness of two designs.

关 键 词：仪器仪表技术 电磁辐射 串扰 蓝牙技术 手机准备系统 

分 类 号：TN836[电子电信—信息与通信工程]