優(yōu)質(zhì)鐵氧體微帶移相器設(shè)計(jì)中的磁參數(shù)
THE MAGNETIC PARAMATER CONNECTED WITH DESIGN OF HIGH QUALITY FERRITE MICROSTRIP PHASE SHIFTER
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摘要: 基片磁化狀態(tài)是影響非互易閉鎖式鐵氧體微帶移相器性能的主要因素之一。提高基片剩余磁化強(qiáng)度,增大器件閉鎖態(tài)的磁化強(qiáng)度4M與基片飽和磁化強(qiáng)度4Ms的比值R(=4M/4Ms),對(duì)于降低器件插入損耗、提高相移效率、擴(kuò)展頻寬、減小驅(qū)動(dòng)功率等均是有利的。文中還分析比較了不同的磁化方式,并給出了單位和多位器件的主要性能。
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關(guān)鍵詞:
Abstract: 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. -
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