| 摘要 |
A bandpass filter which is suitable to be implemented using a multilayered structure, including multilayer ceramic/low temperature co-fired ceramic (MLC/LTCC) technique, is presented. In structure, there is no need of using a substrate with high dielectric constant to reduce the filter size, and it is suitable to be buried into the substrate and thus easy to integrate with other sub-modules to form a single, miniaturized, multifunction module. Electrically, the proposed filter can be modified by adjusting the location of those poles to meet the system specfication. These drastically reduce the amount or even the need for tuning, thereby lowering the filter cost.
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