| 摘要 |
PURPOSE:To expand the range of design, to attain miniaturization and to improve the electric characteristic by overlapping>=three of dielectric bases, clipping plural resonance electrodes separately and providing an earth electrode on a major plane of both outside surfaces. CONSTITUTION:For example, four dielectric bases 41-44 are overlapped mutually and plural electrodes 61-64 of comb-line or interdigital type are clipped separately among the bases 41-44. The earth electrodes 51, 52 are formed respectively to the outside major plane of the dielectric bases 41, 44 at both the outsides. Since the design parameters are increased, the range of design is expanded and a desired size and electric characteristic is easily obtained. Especially, the size W in the broadwise direction is decreased and the filter is miniaturized.
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