| 摘要 |
PROBLEM TO BE SOLVED: To obtain a dielectric resonator with less fluctuation in a resonance frequency by deciding the width of a blade tip surface to permit a blade to be protruded above grooves. SOLUTION: A dielectric body 21 having a conductive film is held by a holding device so as to be rotated with the shaft of the dielectric body 21 as a center, the blade as a removal tool is positioned at the recessed part 28 of the dielectric body 21 and the conductive film is ground by the blade. That is, the blade is moved in a longitudinal direction so as to grind the conductive film on a projected part 28 and a part of the projected part. The blade is provided with the tip surface (grinding surface) having width wider than that of the protected part 28. Therefore, the blade is positioned so as to permit the center of the blade to coincide with the center of the protected part 28, that is, the intermediate position of the first and the second grooves 26 and 27 so that the tip surface of the blade is protruded above the grooves 26 and 27. The width of the tip surface of the blade is decided so as to permit the protruding quantity of the blade to be smaller than the width of the grooves 26 and 27. |
