| 摘要 |
PURPOSE: An RF(Radio frequency) dual mode filter is provided to facilitate a combination with other products, to facilitate a mass production, and to miniaturize an RF filter. CONSTITUTION: A ceramic panel resonator of which thickness is thin has a high dielectric constant. The ceramic panel resonator comprises as a circular form, a gad rectangle, a gad octagonal, and a cross-like shape, and has a symmetrical structure about x and y-axis(z-axis is a height direction). A structure(210) resonances in a dual mode of Quasi TM110-mode by attaching in a bottom center inside a conductor resonance pocket in which a height of a square(001) or a cylinder resonance pocket is smaller than a cylinder radius or a square length. [Reference numerals] (AA) Cubic diagram; (BB) Cross-sectional diagram
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