便携式天线驻波测试仪的研制  

Development of Portable Aantenna VSWR Testing Instrument

作　　者：杨继松[1] 周立鹏[1] 

机构地区：[1]河南科技大学,洛阳471006

出　　处：《现代科学仪器》2010年第2期61-62,74,共3页Modern Scientific Instruments

摘　　要：根据移动通信基站天线日常维护的需要,基于集成幅相检测芯片AD8302和宽带定向耦合器研制出了一种结构简单、造价低廉的便携式天线驻波测试仪。鉴于定向耦合器有限的方向性所导致的反射波取样不纯问题,提出了一种定向耦合器方向性误差校准技术,用于从混合波中提取出纯净的反射波,以便与精确地计算天线的驻波比。实验结果表明,校正方法是正确的和有效的。该测试仪可以满足一般测量精度的要求,适用于基站天线的日常维护等。According to the routine maintenance needs of base station antennas for the mobile communication,a simple,inexpensive,portable antenna VSWR testing instrument based on a amplitude-phase detecting integrated chip of AD8302 and wideband directional couplers is developed.In view of the impure reflected wave caused by the limited directivity of directional couplers,a calibration techniques of directional error is proposed to extract pure reflection wave from the mixed wave and calculate the antenna VSWR accurately.The experimental results showed that the calibration method is correct and effective.This instrument could meet ordinary requirements of measurement accuracy,and is suitable for base station antenna maintenance.

关 键 词：天线 驻波比 反射系数 幅相检测 AD8302 

分 类 号：TN820[电子电信—信息与通信工程]