US Patent 7183498 High-frequency module and electronic device using the module

A high-frequency module has an attached shield case. Barrier 36 of the shield case has wall 37 provided by being bent from ceiling section 32; wall 38 that is opposed to wall 37 and that is provided by being bent from ceiling section 32; and linkage section 39 for linking the tip end of wall 38 to the tip end of wall 37. The shield case further has: a crossing section at which wall 37 crosses ceiling section 32 and side plate 33; notches 43 respectively provided at the crossing sections at which wall 38, ceiling section 32 and side plate 33 cross one another; and division section 44 extending downward from notches 43 for segmentalizing side plate 33. A boundary between circuit block 4 and circuit block 5 is provided at a position corresponding to barrier 36. Connection section 34 is connected to the ground of circuit block 4 or circuit block 5. As a result, a module having a superior shielding performance can be provided to prevent leakage of a signal from a circuit provided on the printed circuit board.