Patent ID: 9166765
Filing Date: 2015-10-20
Classification: H01L,H03H,H04B,H04L,H05K

Abstract:
1. A high-frequency circuit module, comprising: a circuit substrate having laminated insulating layers and conductive layers; a high-frequency IC that performs a transmission process and a reception process for a high-frequency signal; a power amplifier IC that amplifies a transmission signal from the high-frequency IC; and a duplexer that separates a transmission signal and a reception signal, the transmission signal being outputted from the power amplifier IC toward an antenna, the reception signal being inputted from the antenna toward the high-frequency IC, wherein a wiring length of a signal line that is used for sending a transmission signal that has been amplified by the power amplifier IC to the duplexer is shorter than a signal line that is used for sending to the power amplifier IC a transmission signal that is outputted from the high-frequency IC and that has not been amplified, wherein the power amplifier IC is mounted in a peripheral portion of the circuit substrate, and wherein the circuit substrate comprises: a core layer that is thicker than other conductive layers; a terminal electrode formed in a peripheral portion on a bottom surface of the circuit substrate; a ground electrode that is formed in a region inside of an area where the terminal electrode is formed on the bottom surface of the circuit substrate; and a via conductor for heat dissipation that connects the ground electrode to the core layer.