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Resonance online testing system developed

Author: ChenXueFei
Tutor: LiEn
School: University of Electronic Science and Technology
Course: Electromagnetic Field and Microwave Technology
Keywords: Resonant parameters Source Data acquisition Data processing
CLC: TN629.1
Type: Master's thesis
Year: 2010
Downloads: 34
Quote: 0
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Abstract


In recent decades, the microwave technology development , application areas and more widely . Detection of microwave resonator parameters has been one of the microwave technology is the most fundamental and important technology . This article is the Department focused microwave resonance parameters of the test system , tentatively on the basis of a resonant cavity parametric test system structures . The system consists of a computer via a control bus on the signal source sweep control output signal is coupled to the resonant cavity , after the detection of the coaxial detector , the data acquisition card to the detection voltage after the A / D sampling data transmission back to the computer via the data processing based on the resonance parameters . This article analyzes the basic parameters of the resonator deduced , according to the nonlinear relationship between the in -through cavity resonant frequency , Q value and the detector detected voltage , the resonant frequency and Q value of the input frequency and the output terminal of the detection voltage by a signal source for Solving calculation method , this paper provides a theoretical basis for the resonance parameter detection . A more detailed analysis in Chapters III and IV of the principle of the phase-locked loop and composition , and loop filter design and selection of the study , the suppression of phase noise and spurious optimization in a more in-depth analysis . On this basis , the first to use ADISimPLL3.1 phase-locked loop design software source circuit simulation and parameter optimization , and simulation results are analyzed . In the design of a phase-locked loop frequency sweep signal source and signal source debugging and testing based on simulation results . Detector detector principle and technical indicators are discussed , and this article describes the technical parameters of the detector . LabVIEW development platform , developed with NI USB-6008 portable data acquisition card , the system readings sampling and data processing . The last data processing program written by VC to call LabVIEW program generated . Dll file data calculation process . Through experiments , the system has been applied, to verify the operation and function of the various components of the system . Experimental results show that the various functional modules in the system is running well , the system is simple, faster measurement , and the resonance parameters of the test can be applied effectively .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Electronic components, assemblies > Microwave transmission control components > Cavity resonator
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