Novel cavity-type multi-mode filter using TEM-mode and TE-mode
作者： Shigeo Yakuno , Toshio Ishizaki
DOI: 10.1109/APMC.2012.6421603
关键词: Band-pass filter 、 Optics 、 Resonator 、 Mechanical filter 、 m-derived filter 、 Microwave cavity 、 Waveguide filter 、 Helical resonator 、 Materials science 、 Optical cavity
摘要: A novel cavity-type multi-mode bandpass filter is developed. TEM-modes and TE-modes are degenerated in a single cavity. Up to quadruple-mode possible the principle. Because coupling between two too strong design an appropriate pass bandwidth, triple-mode resonator analyzed for this time. By EM field simulation, resonance modes identified three frequencies coincided at 2GHz by tuning cavity structure. Further, adjustment methods frequencies, inter-resonator couplings, input/output couplings investigated form three-pole pseudo-Elliptic-function BPF. Then, experimental fabricated. The measured performance shows very excellent with high selectivity owing attenuation poles both sides of pass-band. Thus, validity concept confirmed.
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