An antenna-embedded electronic device case includes an electrically-insulated case wall, a lower and an upper ground conductive layers, a lower and an upper electrically-insulated layer, and a continuous conductive layer. The lower ground conductive layer is in contact with the electrically-insulated case wall. The lower and upper electrically-insulated layers are sandwiched between the lower and upper ground conductive layers. The continuous conductive layer has a first portion sandwiched between the lower and upper electrically-insulated layers and a second portion protruding out to serve as an antenna radiator for transmitting or receiving electromagnetic signals.