本論文主要研究複合材料實現的半集總式帶通濾波器，為了解決實作上單純使用低K值材料時元件體積過大、與單純使用高K值材料時元件特性不佳的缺點，複合材料濾波器利用高K值材料來實現電容部分以縮小體積，搭配低K值材料來實現傳輸線的部份以提高其Q 值，藉由兩種材料優點的結合達到同時縮小體積與保持良好特性的目
標，實作結果利用複合材料實現的濾波器在通帶2.4GHz 頻率點輸入損耗約為-2dB，2.5GHz 頻率點的輸入損耗約為-1.9dB，衰減量在1.9GHz 和5.0GHz 分別為-42dB 與-35dB，元件尺寸2.0mm X 1.2mm，由量測結果可以證明使用複合材料的確可以同時達到低損耗與縮小元件尺寸兩大訴求。

　The main research of this study is to realize a semi-lump band-pass filter with hybrid dielectrics，In order to solve the problem which caused by single low K and single high K
materials，a concept of hybrid dielectrics is introduced .A hybrids dielectrics filter means that the capacitance will be realized with high K material to reduce size of component，on the other hand the transmission line is realized with low K material to increase it’s Q
factor .The goals of this study is to miniaturizing the size and still keep the performance of filter by using hybrid dielectrics. The measurement result of hybrid dielectrics filter is as follow，insertion loss is -2dB and -1.9dB at 2.4GHz and 2.5GHz respectively，the
attenuation at 1.9GHz is -42dB and at 5.0GHz is -35dB.The size of component is 2.0mm x 1.2mm .This result demonstrate that hybrid dielectric is powerful to make a semi-lump
filter with compact size and good performance .

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