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

Claim 0:
1. A radio frequency (RF) package, comprising:
a first RF power die having a die coefficient of thermal expansion (CTE);
a high thermal performance substrate, comprising:
a metallic base structure having a base structure CTE, a frontside facing the first RF power die, and a first die attach region on the frontside of the metallic base structure; and
a first CTE matched mount pad bonded to the metallic base structure and covering the first die attach region, the first CTE matched mount pad having a mount pad CTE greater than the die CTE and less than the base structure CTE;
an electrically-conductive bonding material attaching the first RF power die to the first CTE matched mount pad; and
RF circuitry integrated into first RF power die and electrically coupled to the metallic base structure through the first CTE matched mount pad.