Patent ID: 7528062

Claim:
A method for manufacturing a radio frequency (RF) device having an integrated matching network, the method comprising the steps of: coupling a first die in which a power amplifier circuit is formed to a first substrate, the first die having a first surface, a second opposing surface, and an output of the power amplifier circuit, and wherein the first surface of the first die is coupled to the first substrate; coupling a second die in which a first integrated passive device (IPD) is formed to the first substrate, the second die having a first surface, a second opposing surface, and an input to the first IPD, wherein the first IPD has a first capacitance, and the first surface of the second die is coupled to the first substrate; and coupling a first metal interconnect formed on a second substrate between the second surface of the first die and the second surface of the second die in order to couple the output of the power amplifier circuit with the input to the first IPD, wherein the first metal interconnect has a first inductance that is coupled in series with the first capacitance, and wherein the first inductance and the first capacitance provides a matching impedance for the power amplifier circuit.