摘要
电子信息技术的发展对环行器提出了低损耗、高隔离度及小型化的要求,采用具有高剩磁比(Mr/Ms)和强各向异性场(Ha)的BaM自偏置铁氧体材料有利于提高环行器性能和减小器件尺寸。在阐述高度取向M型六角铁氧体Ba(ZnHf)_(0.08)Fe_(11.92)O_(19)制备工艺的基础上,表征了材料的相结构、微观形貌和磁性能。根据环行器设计理论,基于0.25 mm厚度的BaM铁氧体材料仿真设计了工作于Ku波段的双Y结和开槽多Y结环行器。仿真结果表明,两种环行器均在12.44 GHz处显示出良好的环行功能,电压驻波比均小于1.22。在中心频率附近,双Y结环行器插入损耗为0.61 dB,相应的隔离度为26 dB,20 dB带宽为1.3 GHz;开槽多Y结环行器插入损耗为0.505 dB,相应的隔离度为36 dB,20 dB带宽为1.03 GHz。相比于双Y结环行器,开槽多Y结环行器在保证器件性能的前提下,能够有效改善插入损耗和隔离度等性能,并有利于减小环行器尺寸。
Advance of electronic information technologies demands low-loss and miniaturized circulators,which could be achieved by using self-biased ferrite BaM with high residual magnetic ratio(Mr/Ms)and strong anisotropic field(Ha).The preparation process was described for highly oriented M-type hexagonal ferrite Ba(ZnHf)_(0.08)Fe_(11.92)O_(19),which was then characterized for its phase structure,microstructure and magnetic properties.Using 0.25 mm BaM ferrite material,a double Y junction and a slotted multi-Y junction circulator were simulated at Ku band using circularizer design theory.The simulation results show that both circulators exhibit expected performance at 12.44 GHz,and their voltage standing wave ratio is less than 1.22.Around central frequency,the dual Y junction circulator has insertion loss of 0.61 dB,isolation of 26 dB,and 20 dB bandwidth of 1.3 GHz,which are 0.505 dB,36 dB and 1.03 GHz for the slotted multi-Y junction circulator.Compared with the dual Y junction circulator,the slotted multi-Y junction circulator can effectively improve the insertion loss and isolation under the premise of ensuring the performance of the device,which help reduce the size of the circulator.
作者
刘谦
陈义林
李毓林
LIU Qian;CHEN Yilin;LI Yulin(College of Electrical Engineering and New Energy,China Three Gorges University,Yichang 443002,Hubei Province,China)
出处
《电子元件与材料》
CAS
北大核心
2023年第5期604-610,617,共8页
Electronic Components And Materials
