Patent ID: 7089032

Claim:
A radio transmitting/receiving device, comprising: a first module on which a function for amplifying a received radio frequency signal, demodulating the amplified radio frequency signal to a baseband signal and outputting the same, and a function for modulating the input baseband signal, converting the modulated baseband signal to a radio frequency and outputting the same are mounted; a second module on which a function for amplifying an input radio frequency to output power is mounted; and a third module on which a function for executing a baseband signal process and for controlling respective units according to a transmission/reception sequence based on a communication protocol is mounted, wherein said first, second and third modules are mounted onto a motherboard; wherein said first module and said second module are comprised of an analog circuit; wherein said third module is comprised of a digital circuit; wherein each of the first, second and third modules is provided with an interposer substrate wherein terminals of semiconductor parts mounted on the main surface side thereof and external terminals disposed on the back side thereof are pitch-converted and thereby connected to one another; and wherein in a layout of the external terminals of the first module, the external terminals for high-frequency signals are arranged on an outermost periphery thereof, and the external terminals for power supplies and control signals are arranged in the layout on an inner side thereof.