| 摘要 |
PURPOSE:To facilitate the frequency adjustment by cutting the electrode of the outer circumference of the resonator by a prescribed width from the open end of the electrode while varying the circumferential length. CONSTITUTION:Electrodes 12, 13 of the resonator 10 are formed respectively on the inner and outer circumferential faces of a cylindrical ceramic 11. The upper flat face is formed to be an open end from which the ceramic is exposed and the outer circumferential electrode 13 is cut off from the open end by a prescribed width of expose the ceramic. In this case, the cutting width is selected to be nearly 1mm and the circumferential length along the open end is selected to be a size to obtain a desired frequency. Thus, the processing is facilitated and the control of adjustment is also facilitated.
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