Patent ID: 6661317
Filing Date: 2003-12-09
Classification: H01L

Abstract:
A microwave monolithic integrated circuit assembly, comprising:a microwave monolithic integrated circuit lying in an MMIC circuit plane and having a first region of relatively high heat production and a second region of relatively low heat production; and a heat-dissipating assembly in thermal contact with the microwave monolithic integrated circuit, the heat-dissipating assembly comprising a casing and a core, the core comprising at least two pieces of pyrolytic graphite embedded within the casing and bonded to an interior wall of the casing, the at least two pieces of pyrolytic graphite comprising a first piece of pyrolytic graphite underlying the first region of relatively high heat production and having a high-thermal-conductivity x-direction of the first piece lying within about 20 degrees of a perpendicular to the MMIC circuit plane, and a second piece of pyrolytic graphite underlying the second region of relatively low heat production and having a high-thermal-conductivity x-direction of the second piece lying within about 20 degrees of the MMIC circuit plane.