作者: Seiji Kanba , Hisatake Okamura , Naoki Mizoguchi
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摘要: A dual mode band-pass filter includes a metallic film for defining resonator, disposed on the first main surface of dielectric substrate having and second surfaces, or inside substrate. An opening is formed in film. At least one ground electrode provided substrate, so as to be opposed through layer. pair input-output coupling circuits connected