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Bandstop filter design based on the ferromagnetic thin film magnetic modulation

Author: ZhaoBaoLin
Tutor: ShiYu
School: University of Electronic Science and Technology
Course: Electronic information materials and components
Keywords: Filter FeCoB Ferromagnetic resonance Actuator
CLC: TN713
Type: Master's thesis
Year: 2008
Downloads: 84
Quote: 0
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Abstract


With the international communications , security , military competition increasingly fierce , the requirements of a variety of electronic facilities in extreme climatic conditions . In the microwave band receiver or transmitter with its can easily through the fog, clouds and smoke characteristics , showing the visible and infrared band device incomparable superiority States researchers attention . Currently, broadband microwave communication system in addition to the rear end of the outer filter system can be integrated in a single chip , the volume of the filter group is much larger than the rear end of the entire system . With the extensive application of microwave communication band microwave frequency electromagnetic environment becomes more complex. In order to improve the communication quality of the microwave band , it is necessary for the communication frequency band signal attenuation, the band rejection filter is widely used in this case . The conventional YIG small ball made ??of technical bandstop filter , bulky , difficult to integrate . The purpose of this paper is to study thin film devices compatible with monolithic technology (magnetic tone band-stop filter ) , the the magnetic tone band-stop filter filter stopband center frequency with external DC magnetic field changes and then tuning. Magnetic tune the band rejection filter based on the ferromagnetic resonance principle , the use of a the FeCoB thin film having a high saturation magnetization , plus a small dc magnetic field can work microwave band , to overcome the conventional technique bandstop filter requires a lot of dc magnetic field applied shortcomings. Magnetic tune the design of the band-stop filter this thesis work from three aspects . First , the magnetic tone band-stop filter circuit analysis and structural design . Research, design circuit pattern and mask filter characteristics . Second , actuators, and the research and design of the test platform . Actuator as a magnetic tune an integral part of the bandstop filter , the filter work to provide a dc magnetic field can be adjusted . . Through the above work , the paper design to achieve a work in microwave and millimeter wave band , the center stop-band tunable band-stop filter and test the filter actuator and test platform , master the basic method of magnetic thin film devices for follow-up film device design and lay a good foundation .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Filtering techniques,the filter
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