DUPLEXING MODULE USING LAMINATED STRUCTURE OF CERAMIC SUBSTRATE AND FBAR FILTER

摘要

PURPOSE: A duplexing module using a laminated structure of ceramic substrate and FBAR(Film Bulk Acoustic Resonator) filter is provided to minimize the size and the mounting cost by forming a three-dimensional module. CONSTITUTION: An FBAR filter is formed on a resonator structure. An inductor and a delay signal line are patterned on an inductor substrate(50) and a delay line substrate(60). A first ground substrate(40) and a second ground substrate(70) include ground patterns connected to the inductor substrate and the delay line substrate. A connective substrate(30) is electrically connected to pad connection terminals of the inductor substrate and the delay line substrate through signal lines. A ground part of the resonator structure is electrically connected to ground patterns of the first substrate and the second substrate. The second ground substrate, the delay line substrate, the inductor substrate, the first ground substrate, the connective substrate, and the resonator structure are stacked sequentially and are packaged by using via holes of each substrate.