| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To miniaturize and reduce cost of a high frequency module provided with a branching circuit dividing transmission/reception signals different in pass bands into a first transmission/reception signal and a second reception signal, and a duplexer which is connected to the branching circuit and branches the first transmission/reception signal into the first transmission signal and the reception signal on a dielectric multilayer substrate, by efficiently arranging the branching circuit in the dielectric multilayer substrate. <P>SOLUTION: The branching circuit is composed of at least two filters 101 and 102. The two filters 101 and 102 are arranged in the dielectric multilayer substrate 100, so that they are overlapped if viewed from the lamination direction of the dielectric multilayer substrate 100. A grounded GND layer 110 is arranged between the two filters 101 and 102. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
