A D-band chip-to-waveguide-horn (CWH) antenna with 18.9 dBi gain using CMOS technology

This paper presents an chip-to-waveguide-horn (CWH) antenna structure to improve silicon-based on-chip antenna gain at D-band. In the proposed CWH antenna structure, a transition from chip to rectangular waveguide is adopted and is followed by a horn for power radiation. For the chip-to-waveguide transition, a high efficiency dielectric resonator antenna (DRA), which is excited by a substrate integrated waveguide (SIW) cavity backed on-chip antenna, is used to transfer the power to the waveguide. The simulated results indicate 45% radiation efficiency and -17 dB reflection coefficient for the CWH antenna at 140 GHz. The proposed CWH antenna is measured by using on-wafer testing method and the measured results show the peak gain of 18.9 dBi at 143 GHz with the 3 dB bandwidth of 21 GHz and the reflection coefficients <;-6 dB from 120-160 GHz.