Patent ID: 9433080
Filing Date: 2016-08-30
CPC Classification: H01L,H01P,H01Q,H05K

Claim Text:
1. A high-frequency circuit package comprising: a first dielectric substrate having a high-frequency circuit, which includes a high-frequency semiconductor chip disposed on an underside surface layer, and having a first grounding conductor that has same electric potential as a grounding conductor of the high-frequency circuit, the first grounding conductor being formed on the underside surface layer to surround the high-frequency circuit and being connected to the grounding conductor of the high-frequency circuit via a plurality of through-holes; and a second dielectric substrate, on which the first dielectric substrate is mounted, the second dielectric substrate having a line formed thereon for supplying a signal to drive the high-frequency circuit and having a second grounding conductor formed in a region that faces the high-frequency circuit over the high-frequency circuit, wherein the first dielectric substrate has a plurality of first lands arranged on the first grounding conductor to surround the high-frequency circuit, and a plurality of first signal lands transmitting a DC bias or control signal for driving the high-frequency circuit, the second dielectric substrate has a plurality of second lands electrically connected to the second grounding conductor and formed at positions on a surface layer of the second dielectric substrate which face the plurality of first lands, and a plurality of second signal lands connected to a line for supplying the signal for driving the high-frequency circuit and provided at positions which face the plurality of first signal lands, a plurality of conductive connecting members are disposed for connecting between the first lands and the second lands and between the first signal lands and the second signal lands, the high-frequency circuit is housed in a pseudo shielding cavity that is surrounded by the plurality of conductive connecting members, the first and second grounding conductors, and the grounding conductor of the high-frequency circuit, the grounding conductor of the high-frequency circuit is formed in a region on an inner layer of the first dielectric substrate.