磁性材料及器件第54卷第3期2023年5月•35•基于磁反馈的磁调谐器件激励方法吴江1,赵勇1,马金龙2,李晟1,王玲巧2(1.西南应用磁学研究所,四川绵阳621000;2.西北工业集团有限公司,陕西西安710043)摘要:磁调谐器件激励电路主要通过采样电流形成恒流源,从而获得稳定磁场,但是此方法容易出现器件频率漂移。针对现有技术存在的问题,提出一种基于磁反馈的磁调谐器件激励电路,通过采用磁传感电路检测磁场的感应电压形成反馈回路,将应力、温度、磁滞等因素的影响纳入闭环控制,从而减小甚至消除磁调谐器件的频率漂移,同时可减小器件的温升,提高可靠性。关键词:磁调谐器件;激励电路;频率漂移;磁反馈;电路中图分类号:TN74文献标识码:A文章编号:1001-3830(2023)03-0035-04DOI:10.19594/j.cnki.09.19701.2023.03.006著录格式:吴江,赵勇,马金龙,等.基于磁反馈的磁调谐器件激励方法[J].磁性材料及器件,2023,54(3):35-38.//WUJiang,ZHAOYong,MAJin-long,etal.Magnetictuningdeviceexcitationmethodbasedonmagneticfeedback[J].JournalofMagneticMaterialsandDevices,2023,54(3):35-38.MagnetictuningdeviceexcitationmethodbasedonmagneticfeedbackWUJiang1,ZHAOYong1,MAJin-long2,LISheng1,WANGLing-qiao21.SouthwestInstituteofAppliedMagnetics,Mianyang621000,China;2.NorthwestIndustriesGroupCo,Ltd,Xi’an710043,ChinaAbstract:Thecurrentmagnetictuningdeviceexcitationcircuitmainlyformsaconstantcurrentsourcebysamplingthecurrenttoobtainastablemagneticfield,butthismethodispronetothefrequencydriftofthedevice.Thispaperproposesamagneticfeedback-basedexcitationcircuitformagneticsensingcircuittodetecttheinducedvoltageofthemagneticfieldtoformafeedbackloopandincorporatestheeffectsofstress,temperatureandhysteresisintoclosed-loopcontrol.Soastoreduceoreveneliminatethefrequencydriftofthemagnetotuneddevice,andatthesametimereducethetemperatureriseofthedeviceandimprovereliability.Keywords:magnetictuningdevice;excitationcircuit;frequencydrift;magneticfeedback;circuit1引言YIG磁调谐器件是基于旋磁材料的铁磁共振原理实现超宽带调谐的一系列器件,包括带通滤波器、带阻滤波器、振荡器等。磁调谐器件具有调谐频带宽、调谐线性度好等优点,广泛应用于各类电子对抗设备、高精度测试仪器中[1-3]。...