Patent ID: 7768792

Claim:
A front end module having a multilayered structure comprising a transmitter, a receiver and a duplex unit, wherein the multilayered structure comprises a ground layer including plural ground patterns having at least one block on a surface of a substrate of the front end module, and the multilayered structure further comprises: a device mounting layer which has a plurality of pattern regions comprising bonding patterns on which the transmitter, receiver and duplex unit are mounted, the device mounting layer having a ground pattern of the device mounting layer separated from the plurality of pattern regions; an upper ground layer provided with a plurality of via-holes and a ground pattern of the upper ground layer separated from the plurality of via-holes, wherein the upper ground layer comprises a first pattern open region in a line shape corresponding to a boundary portion between a receiver mounting region and a duplexer mounting region; and a wire pattern layer provided with a transmitting pattern and a ground pattern of the wire pattern layer separated from the transmitting pattern, wherein the wire pattern layer comprises a second pattern open region in a line shape corresponding to the first pattern open region, wherein the ground layer is a lower ground layer having a ground pattern of the lower ground layer and a connection pattern separated from the ground pattern of the lower ground layer.