| 摘要 |
A resonator constituted of an external conductor (1), a dielectric plate (2), a resonating capacitance element, an input terminal (5) and an output terminal (6). The plate (2) is fixed at the upper and lower ends to the upper and lower walls of the conductor (1), respectively. The resonating capacitance element is constituted of electrodes composed of metallic thin layers or metallic plates respectively provided on the front and back of the plate (2). The lower end of one of the electrodes is electrically connected to the lower wall of the conductor (1), and a gap is formed between the upper end of the one electrode and the upper wall of the conductor (1). The upper end of the other electrode is electrically connected to the upper wall of the conductor (1), and a gap is formed between the lower end of the other electrode and the lower wall of the conductor (1).
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