94-GHz CMOS on-Chip Antenna Based on Stacked Dielectric Resonators and Substrate Integrated Waveguide Multi-Feed Network

This paper presents a 94-GHz 3-D on-chip antenna (OCA) based on stacked dielectric resonator and substrate integrated waveguide (SIW) multi-feed network. To isolate the losses from the lossy silicon substrate, Artificial Magnetic Conductor (AMC) is firstly utilized. Subsequently, to further enhance gain and radiation efficiency, high-permittivity dielectric resonator, off-chip ground and slot feeding are employed. To improve equivalent isotropically radiated power (EIRP), on-chip power combining is proposed by using SIW multi-feed network, which is consisted of an array of microstrip line and SIW in standard 65nm CMOS technology. On-chip multi-feed antenna can almost maintain the same bandwidth and radiation pattern with the increase of numbers of input feeding, which improves the total radiated power. The results show that proposed approach is an attractive candidate for 94-GHz radar image application.