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According to the characteristic that the resonant frequency of the resonant cavity shifts with the change of the air permittivity, this paper presents the frequency measurement system based on the microwave cavity wetness measurement system and realizes the accurate measurement of the steam wetness. A new method of frequency measurement is introduced, which is the combination of multi-cycle synchronization...
A method for wetness measurement based on microwave resonant cavity is presented in this paper. A specially structured resonant cavity with annular grid at its both ends was designed for the wetness measurement of flowing wet air. The pneumatic characteristic of the cavity was simulated and the S parameter of it was measured. The simulation and measurement results show that it is especially suitable...
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