The present invention filter device and unlikely to occur the problem of noise such as contamination in the signal transmission path between the heat-generating electronic parts, moreover, a difficult circuit module that caused the failure of the operation such as false to the filter device by heat transfer from the heat-generating electronic component provide.
A circuit module includes a multilayer substrate 11 is a metal core layer 11a, the filter device 12 is accommodated in the accommodating portion 11a1 of the core layer 11a, the filter device 12 and the power amplifier IC13 filter device all parallel projection region PPR12 of 12 have a positional relationship overlapping the parallel projection area PPR13 power amplifier IC13, the upper surface of the core layer 11a through a plurality of thermal vias 11t1 power amplifier IC13 are provided in the multilayer substrate 11 and a structure that is connected to (the thickness direction one side).
.FIELD 1