摘要
天线是车载通信系统的重要设备,天线电磁特性的研究对提高车载通信系统电磁兼容性能十分重要,是实现车载通信的基础。根据理论推导和经验公式,分析了城市和高速公路等不同场景下车载天线电磁波传输特点,建立了电磁波传输模型,仿真分析了车载天线电磁特性。仿真结果得出了不同场景下通信距离、车体形态与天线增益的关系;结果表明随着通信距离的增大,天线间增益呈下降趋势,但随着频率的升高,增益呈现上升趋势。研究结果为减小天线电磁干扰提供了参考。
Antennas have become an important component for vehicle communication system,thus the research of electromagnetic properties of antennas is of great importance to enhance the performance of electromagnetic Compatibility（EMC） for vehicle communication system,and the research of electromagnetic properties of antennas is the foundation to realize the vehicle communication system.In this paper,According to the theory and experience formula,some researches are made on the transmission characters of electromagnetic wave for vehicular antennas under different traveling scenes of city and expressway,and then transmission models of electromagnetic wave is set up,finally,the electromagnetic characters of vehicular antennas are stimulated and analyzed.Stimulating results supply some references for decreasing electromagnetic interference between antennas.The simulation results indicate the relationship between the communication distance,vehicle body and antenna gain.The simulation results show that with the increase of communication space,gain among the antenna is declined,but as frequency increases,gain among the antenna showed a rising trend.From the research result,the reference is provided for reducing electromagnetic interference of antennas.
出处
《电子测量技术》
2011年第11期85-88,共4页
Electronic Measurement Technology
基金
上海市电磁兼容检测重点实验室开放课题
关键词
车载天线
传输模型
电磁特性
vehicular antennas
transmission model
electromagnetic properties
