| 摘要 |
PROBLEM TO BE SOLVED: To provide a lamination band pass filter that does not make the size of a product large, has a few restrictions on the manufacture to control its band width, improves the band width and a degree of freedom in design selection and quickly performs the product design and to provide a band width control method. SOLUTION: In the inside of a base 1 consisting of a ceramic laminator, a pair of inductor electrodes 7a, 7b coupled mutually by electromagnetic induction is provided. An upper ground electrode 11 and a lower ground electrode 6 are provided in the inside of the base 1 so as to hold the inductor electrodes 7a, 7b between them via a dielectric layer. An electrode missing part 6a is provided so as to contain an area respectively opposite to the pair of the inductor electrodes 7a, 7b of the lower ground electrode 6. The band width is controlled by changing at least either of the size or the shape of the electrode missing part 6a. |
