| 摘要 |
PURPOSE:To attain a light weight, reduction of a common difference of the core heights, improvement of the airtight reliability and simplification of assembly respectively for a dielectric filter, by forming a conductor pattern capable of trimming on the surface of a dielectric core. CONSTITUTION:A dielectric core 3 is loaded to enclose an internal conductor 1c which is joined to a case 4. A conductor pattern 100 capable of trimming is formed on the surface of a dielectric core 3. The pattern 100 is made of a metal such as silver, copper, etc. having low resistance value. A trimming control is given to the pattern 100 before or after it is loaded into a case by means of a laser or a proper mechanical means. In such a way, a filter is obtained to satisfy the electric characteristics. The thickness of the pattern 100 is set so as to satisfy the depth of the skin in terms of a skin effect. |
