Low-Cost Packaging of 300 GHz Integrated Circuits With an On-Chip Patch Antenna

Abstract

Placing a 300 GHz on-chip patch antenna in a low-cost quad-flat no-lead (QFN) package using materials based on silica microparticles dispersed in an epoxy matrix can improve the antenna performance. Full-wave simulations of a rectangular patch antenna, compliant with the metal stack and design rules of a 65 nm complementary metal-oxide-semiconductor (CMOS) process, show 13% radiation efficiency, 1 dB peak antenna gain, and 7 GHz -10 dB vertical bar S-11 vertical bar bandwidth increases when the thickness of packaging material over the antenna is similar to lambda/3. When placed in a QFN package, 276 GHz CMOS signal generators with the same on-chip antenna show the effective isotropic radiated power similar to 6 dB higher than that of unpackaged. This improvement is partly attributed to the antenna performance enhancement and demonstrates that it is possible to package 300 GHz integrated circuits with an on-chip patch antenna using a low-cost technique.