Patent ID: 11929310
Assignee: NXP USA, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A method for fabricating a radio frequency (RF) package, the method comprising:
obtaining a first RF power die having a die coefficient of thermal expansion (CTE);
attaching the first RF power die to a first CTE matched mount pad included in a high thermal performance substrate, the first CTE matched mount pad bonded to a metallic base structure having a base structure CTE and having a mount pad CTE greater than the die CTE and less than the base structure CTE;
attaching a carrier RF power die to a second CTE matched mount pad included in the high thermal performance substrate; and
in conjunction with attaching the first RF power die to the first CTE matched mount pad and attaching the carrier RF power die to the second CTE matched mount pad, electrically coupling power amplifier (PA) circuitry formed on first RF power die to the metallic base structure through the first CTE matched mount pad and electrically coupling RF circuitry formed on carrier RF power die to the metallic base structure through the second CTE matched mount pad.