Photonic-Integrated mm-Wave On-Chip Antenna Design for Opto-electronics Applications

A new multi-element on-chip mmWave antenna at 24 GHz is proposed using Silicon Photonics (SiP) technology. The antenna includes a coplanar patch antenna, a Bowtie antenna, and a slot antenna. The achieved 10 dB impedance bandwidths are 4.45, 2, and 0.9 GHz for the−coplanar patch, the Bowtie, and the slot, respectively. The obtained realized gains are 2.1, 2.8 and −1.4 dBi for the coplanar patch, the Bowtie, and the slot, respectively. The size of the proposed antenna is 7×3×0.731 mm
³
. The coplanar patch and the slot provides omnidirectional radiation patterns, while the Bowtie provides a directional pattern. The coupling between the coplanar patch and the slot is high, enabling the inter-chip communications.