Millimeter-wave photodetection and direct integration with microstrip slot antenna array

In this paper, we present experimental results on millimeter-wave photodetection for fiber-radio system. The experiment shows about 5 dBm millimeter-wave output from the photodetector at 38 GHz and 60 GHz, respectively, which is close to the required power for direct feed of the indoor millimeter-wave radiation system. To efficiently radiate the obtained millimeter-wave power, a microstrip slot antenna array directly integrated with the photodetector is designed and fabricated on a glass substrate at 38 GHz and 60 GHz. The simulation results for the antenna are also presented.