传感技术学报2011，Vol.24Issue(4)：513-516,4.DOI:10.3969/j.issn.1004-1699.2011.04.009
基于超微晶合金的传感器噪声匹配变压器设计
Design of Sensor Noise Matching Transformer Based on Nanocrystalline
摘要
Abstract
A method to improve the performance of the pre-amplifier for the sensor is introduced. High magnetic permeability,low rectangular nanocrystalline alloy is used to fabricate the noise matching transformer to overcome shortcomings of the traditional noise matching transformer amplifier. By using the performance of the nanocrystalline of high magnetic permeability,low coercivity, low Squareness and low losses character, many shortcomings for conventional material are overcome. In order to obtain and test the effect of different types of soft magnetic material to the output signal,this paper analyzes the soft magnetic properties of materials and transformer equivalent circuit. The results of the tests show that the VAC500F nanocrystalline is better than traditional material in performance. It has a close to ideal SNIR( signal to noise improve ratio)of 18.6 dB ,has less than O. 1％ THD( total harmonic distortion) ,and it also has the high band wide the low loss characteristic. It has a better practical value in detecting of sensor.关键词
噪声匹配/信噪比/变压器/超微晶合金Key words
noise matching/ SNR/ transformer/ nanocrystalline分类
信息技术与安全科学引用本文复制引用
樊尚春,陶泽辉,邢维巍..基于超微晶合金的传感器噪声匹配变压器设计[J].传感技术学报,2011,24(4):513-516,4.基金项目
国家自然科学基金仪器专项项目(60927005) （60927005）
