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Mesure des facteurs de réflexion et de transmission des applicateurs microondes industriels

Abstract : This work is devoted to studying the feasibility of an instrumentation system for measuring the reflection and transmission factors of an industrial microwave applicator. The selected measurement method uses quadrature IF double balanced mixers and is based on phase modulation. The method permits continuous measurements. The electronic circuits which compose the system are described. An original mechanical phase modulator was especially built. Its characteristics are detailed. Two implementations of the method were made : first, experiments carried out with a simple set up, using a commercial quadrature IF mixer and supplied with a laboratory generator and secondly, the tests made with the electronic board which was developed and fed by a CW high power generator. Finally, the experiments carried out with an industrial pulsed generator of 1 kW are described. The performance of the complete system is presented and discussed. The results show the importance of synchronising the recorded information and the microwave generator emission when a real-world imperfect generator, such as a magnetron, is used.
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Submitted on : Thursday, March 29, 2018 - 10:45:10 AM
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  • HAL Id : tel-01746804, version 1



Haykel Chaabane. Mesure des facteurs de réflexion et de transmission des applicateurs microondes industriels. Autre. Université Henri Poincaré - Nancy 1, 2003. Français. ⟨NNT : 2003NAN10039⟩. ⟨tel-01746804⟩



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