A High Precision Square Law Detector in Digital Microwave Radiometer

摘要：

A new square law detector has been developed for digital microwave radiometer. It has a wider dynamic range and a more accurate square law response than has been available in the past. Experimental results show that the voltage sensitivity is higher than 0.9mV/μW and the linearity error is less than 0.3％ in the frequency range from 100MHz to 2GHz and power range from 50dBm to -20dBm. Another advantage of the detector is its flatness, by selected a best type of diodes. Detailed detection circuit and measurement system have been given in this paper.

关键词： Square law detector Schottky diode Digital microwave radiometer Microwave power measurement Radio astronomy

作者: Xin Pei Maozheng Chen Hao Yan Jian Li Xiaohong Liu

作者单位: Xinjiang Astronomical Observatory, Chinese Academy of Sciences Urumqi, China Graduate University of Xinjiang Astronomical Observatory, Chinese Academy of Sciences Urumqi, China

会议类型: 国际会议

会议名称: 2011 2nd International Conference on Data Storage and Data Engineering(DSDE 2011)(2011年第二届数据存储与数据工程国际会议)

会议地点: 西安

会议语种:英文

页码: 211-214

在线出版日期: 2011-05-13（万方平台首次上网日期，不代表论文的发表时间）