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Development and electromagnetic environment evaluation of ultra wideband device for the next generation mobile communication system

下一代移动通信系统超宽带器件研制及电磁环境评估

基本信息

批准号：
20560339
负责人：
ANADA Tetsuo
金额：
$ 2.66万
依托单位：
Kanagawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2008
资助国家：
日本
起止时间：
2008 至 2010
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20560339/
关键词：
電子デバイス・機器高速伝送回路設計マイクロ波工学マイクロ波電磁界測定電流プローブ電界プローブマイクロストリップ UWBフィルタ EMC/EMI/SI フィルタ合成平面回路 UWBフィルタ設計電磁環境評価磁界プローブ

项目摘要

Since the Federal Communications Commission authorized the unlicensed use of ultra-wideband (3.1-10.6 GHZ) in 2002, the ultra-wideband technologies have drawn great inter-est in short-range wireless communications such as locating and imaging of objects, in-vehicle sensing, monitoring of highways and other civil infrastructure, and so on. In order to realize such UWB wire-less communication systems, the ultra-wideband bandpass filter is one of the key passive components. We succeeded in the achievement of the ultra-wideband bandpass filter without electromagnetic inter-ference in order to integrate them with other components as a compact system. These methods include microstrip structures, parallel coupled line, step impedance resonator, short-circuited stub by via holes, etc. In order to complete the UWB-filter design, it is essential to know not only the input/output fre-quency characteristics with the network analyzer but also the electromagnetic field distribution and cur-rent distribution of center conductor to understand the ultra-wideband filter design, optimization, and operation principle for the microstrip planar structures. For measurement of all EM near field distribu-tions in UWB-BPFs fabricated on a microstrip structure, contactless field mapping technique using elec-tric and magnetic field probes was developed. The H-field can be measured using a small loop probe and an appropriate instrument such as network analyzer or spectrum analyzer and the E-field can be meas-ured using a coaxial type probe.

自从联邦通信委员会授权无证使用超宽带（3.1- 10.6GHZ）的超宽带无线通信系统，在短距离无线通信中引起了人们极大的兴趣，如目标定位和成像、车载传感、高速公路和其他民用基础设施的监控等，为了实现这样的超宽带无线通信系统，超宽带带通滤波器是关键的无源元件之一。我们成功地实现了无电磁干扰的超宽带带通滤波器，以便将它们与其他组件集成为一个紧凑的系统。这些方法包括微带结构、平行耦合线、阶跃阻抗谐振器、通孔短路短截线等。为了完成超宽带滤波器的设计，不仅需要通过网络分析仪了解输入/输出频率特性，而且需要了解中心导体的电磁场分布和电流分布，以便了解超宽带滤波器的设计、优化、以及微带平面结构的工作原理。为了测量微带结构超宽带带通滤波器的电磁近场分布，提出了一种利用电场和磁场探头的非接触场映射技术。H场可以使用小环探头和适当的仪器（如网络分析仪或频谱分析仪）测量，而E场可以使用同轴型探头测量。