Patent ID: 6657523
Filing Date: 2003-12-02
Classification: H01L,H01Q

Abstract:
A stacked radio-frequency module formed by stacking dielectric multi-layer substrates onto which radio-frequency circuits are provided, wherein,at least two of the dielectric multi-layer substrates comprise: a substrate having dielectric walls provided on its periphery; a closed space in which the radio-frequency circuits are stored, formed by surrounding the space with the dielectric walls and the dielectric multi-layer substrate provided as an upper stage; an input/output terminal for radio-frequency signals provided on at least one of the upper surfaces of the dielectric walls and the bottom surface of the substrate at a position where the dielectric walls are provided, at a position opposing an input/output terminal for radio-frequency signals of the dielectric multi-layer substrate at the upper stage or lower stage; an input/output terminal for power supply/control signals provided on at least one of the upper surfaces of the dielectric walls and the bottom surface of the substrate at a position where the dielectric walls are provided, at a position opposing an input/output terminal for power supply/control signals of the dielectric multi-layer substrate at the upper stage or lower stage; a transmission path within the substrate for radio-frequency signals provided inside the dielectric multi-layer substrate, for connecting the input/output terminal for radio-frequency signals and the radio-frequency circuits; and a transmission path within the substrate for power supply/control signals provided inside the dielectric multi-layer substrate, for connecting the input/output terminal for power supply/control signals and the radio-frequency circuits, and gold bumps provided for joining the input/output terminals for radio-frequency signals that are provided at opposing positions and for joining the input/output terminals for power supply/control signals provided at opposing positions.