One-cavity three-mode filter
A filter and one-cavity technology, applied in waveguide devices, electrical components, circuits, etc., can solve problems such as waste of resources, and achieve the effects of cost saving, full mode application, and low insertion loss
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[0027] like figure 1 As shown in the figure, the one-cavity three-mode filter is characterized in that it at least includes a cubic rectangular waveguide resonator 3, and the cubic rectangular waveguide resonator 3 has three modes: TE101, TE011, and TE110, and the resonant frequencies of the three modes are equal in magnitude, The cavity of the cubic rectangular waveguide resonator 3 is filled with a non-conductive dielectric material, six sides are conductive surfaces, and the side length is one-half of the root sign of the wavelength when the center frequency is in the dielectric material.
[0028] The cubic rectangular waveguide resonator 3 includes a coupling window 2, and the cubic rectangular waveguide resonator 3 is coupled with the waveguide 1 through the coupling window 2, the external signal energy is input through the waveguide 1, and the waveguide 1 passes through the coupling window 2 in the cubic rectangular waveguide resonator cavity. 3. Any one of the main mode...
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