A low profile zeroth order resonator antenna for 80 GHz chip-to-chip communication

In this presentation, the authors discuss a wideband antenna design for chip-to-chip communication at 80 GHz. The target bandwidth is 8 GHz (S11<;-10dB from 76 GHz to 84 GHz). A low profile antenna is needed for this application since the antenna is supposed to be integrated in the same PCB (printed circuit board) as the chip is located on. However, designing a low profile antenna that radiates in the end-fire direction (horizontal to the PCB surface) turns out to be very difficult due to the nearby PCB ground plane (λ/20 apart from the antenna aperture). Conventional wideband end-fire antennas such as tapered slot antennas and Yagi-antennas are not applicable as they tend to radiate in the broadside direction (vertical to the PCB surface).