现代电子技术2017，Vol.40Issue(9)：104-107,4.DOI:10.16652/j.issn.1004-373x.2017.09.028
基于AD8302的甚高频天线阵电缆相位差检测
AD8302-based cable phase difference detection of VHF antenna array
摘要
Abstract
According to the phase measuring principle of the very high frequency(VHF)antenna array,a method of using the phase detection chip AD8302 to convert the phase difference of the scaling source signal of the two array elements from receiver to transmission feeder line into the corresponding direct voltage. The single channel A/D sampling was realized with 12 bit quanti-zation accuracy. The error is analyzed and corrected to realize the phase error correction method. The accuracy of the cable phase error given by the system was verified in the measuring conditions of low frequency(2 MHz)and high frequency(300 MHz). The error accuracy of the distance among cables can reach cm level when the input signal is 300 MHz. The system can be widely used for related antenna array error correction and cable error measurement.关键词
VHF/射电天文/相位差检测/电缆/AD8302Key words
VHF/radio astronomy/phase difference detection/cable/AD8302分类
信息技术与安全科学引用本文复制引用
乐林株,汪敏,董亮..基于AD8302的甚高频天线阵电缆相位差检测[J].现代电子技术,2017,40(9):104-107,4.基金项目
国家自然科学基金项目青年基金(11303094) （11303094）
国家自然科学基金天文联合基金(U1431113) （U1431113）
云南省应用基础研究计划应用基础研究面上项目(2015FB189)和西部之光A类人才计划资助 （2015FB189）
