| 摘要 |
PURPOSE: A dielectric filter is provided to form easily a coupling capacitor and an input and output capacitor by inserting a gap into an inside of a dielectric filter. CONSTITUTION: Two inner holes(4,4') are formed to a front direction of an inside of a main body(2). An electrode(3") is formed on each inner hole(4,4'). An electrode dissection portion(5) is formed to a front direction of a bottom portion of a dielectric resonator(1). A plurality of parallel circular input/output capacitors(6,6") are formed by connecting an inner electrode of the electrode dissection portion(5) with the inner holes(4,4') and the electrode(3"). A coupling capacitor(8) is formed by punching two circular holes(7,7') having the electrode in a backward portion of the inner side of the main body(2). A gap(9) is formed between the inner holes(4,4') and the rear circular holes(7,7').
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