Front-end module

A front-end module, comprising:

• a substrate comprising:
• a first connection member having a first stack structure in which at least one first insulating layer and at least one first wiring layer are alternately stacked;
• a second connection member having a second stack structure in which at least one second insulating layer and at least one second wiring layer are alternately stacked;
• and
• a core member disposed between the first and second connection members;
• a radio-frequency component mounted on a first surface of the substrate and configured to amplify a main band of an input radio frequency (RF) signal or filter one or more bands outside the main band;
• an inductor disposed on a first surface of the core member and electrically connected to the radio-frequency component;
• and
• a ground plane disposed on a second surface of the core member,
• wherein the core member comprises a core insulating layer thicker than an insulating layer among the at least one first insulating layer and the at least one second insulating layer.