优质铁氧体微带移相器设计中的磁参数

基片磁化状态是影响非互易闭锁式铁氧体微带移相器性能的主要因素之一。提高基片剩余磁化强度,增大器件闭锁态的磁化强度4M与基片饱和磁化强度4Ms的比值R(=4M/4Ms),对于降低器件插入损耗、提高相移效率、扩展频宽、减小驱动功率等均是有利的。文中还分析比较了不同的磁化方式,并给出了单位和多位器件的主要性能。

THE MAGNETIC PARAMATER CONNECTED WITH DESIGN OF HIGH QUALITY FERRITE MICROSTRIP PHASE SHIFTER

This paper shows that the state of magnetization of the substrate is one of the main fac-tors affecting the properties of nonreciprocal latching ferrite microstrip phase shifter. Rai-sing the residual magnetization of the substrate, increasing the ratio R =4M/(4Ms) (4M-the magnetization of the latching state of the device, 4Ms-the saturation magnetization) are effective in reducing the insertion loss of the device, raising the effective-ness of phase shift, extending the frequency range of the device,and reducing the drive power, etc. Different ways of magnetization are analysed and compared. Photos indicating the structure and external form of the device are given and the main performances of singledigit and multidigit devices are also presented.