PROJECT TITLE :
Printed arc coupler in a circular cylindrical measurement cavity for suppressing degenerate modes
A printed arc coupler has been proposed for avoiding and suppressing the spurious mode within the permittivity measurement cavity. Geometric parameters like radius of arc (r), the central angle of the arc (θ), and the peak of the board (t) are varied and their effects are investigated. Thanks to the central symmetry design of the coupler, the cavity features a clear TE01one mode, when r, θ, and t modify the resonance magnitude of the system. Simulation and experimental results show cheap agreement. The error introduced due to coupling will be reduced. This method has the advantages of easy setting of the apparatus and quick tuning of the coupling.
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