Reliable Derivation of Automotive Antenna Gain Patterns from LTE Communication Parameters
Reliable Derivation of Automotive Antenna Gain Patterns from LTE Communication Parameters
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DOI：
10.1109/vtcspring.2018.8417494
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发表时间：
2018-06
期刊：
影响因子：
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通讯作者：
P. Berlt;Frank Wollenschläger;C. Bornkessel;M. Hein
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文献类型：
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作者：
P. Berlt;Frank Wollenschläger;C. Bornkessel;M. Hein
现代车辆中无线系统的数量正在稳步增加。汽车无线电系统的表征和评估是当前研究中的一项重要任务，特别是在自动化和互联驾驶方面。随着天线与前端和信号处理器的集成迅速发展，需要开发测量天线辐射特性的新方法。因此，可能无法访问天线馈电点，或者需要对被测系统进行不希望的修改。本文描述了一种通过评估由标准LTE调制解调器监测的LTE通信参数来确定汽车天线的增益模式的方法。所提出的方法允许在安装状态下测量天线，因为仅需要到LTE调制解调器的串行连接，而不是到馈电点的RF接入。该方法已在虚拟道路模拟和测试区域中成功验证，用于在2655 MHz频率（LTE频段7）下对汽车LTE天线的增益模式进行水平切割。增益模式实际上与用传统的近场到远场测量技术获得的增益模式没有区别。
The number of wireless systems in modern vehicles is steadily increasing. The characterisation and evaluation of automotive radio systems is an important task in current research, especially in view of automated and connected driving. New methods to measure the radiation properties of antennas need to be developed, as the integration of antennas with frontends and signal processors proceeds rapidly. As a consequence, access to the antenna feed point may not be available, or require undesired modification of the system- under-test. This paper describes a method to determine the gain pattern of an automotive antenna by evaluating LTE communication parameters monitored by a standard LTE modem. The proposed approach allows for the measurement of the antenna in the installed state, as only a serial connection to the LTE modem is required, instead of RF access to the feed point. This method has been successfully verified in the virtual road simulation and test area for a horizontal cut of the gain pattern of an automotive LTE antenna at a frequency of 2655 MHz (LTE band 7). The gain pattern is virtually indistinguishable from that obtained with a conventional nearfield to far- field measurement technique.