Recent Advances in Display-Integrated Millimeter Wave Antennas

As demands grow for high transmission data rates, low latency, and high reliability, there has been a continuous pursuit of wider bandwidths in wireless communications. This has attracted extensive research interests in millimeter-wave (mmWave) antennas in the fifth-generation (5G) mobile to take advantage of a high-speed transmission network and broader bandwidth than previous cellular technologies. To take those benefits of the mmWave spectrum, an approach of integrating optically-transparent antennas into a display panel, i.e., antenna-on-display (AoD), has been proposed recently. In this talk, we will explore technical challenges when integrating antennas as thin-metal mesh lines on top of the active region of the display area. Some design examples will be presented to overcome strict restrictions on the impedance matching bandwidth, realized gain, efficiency, and polarization without compromising the panel thickness.