New Microwave Generator for 28 GHz band of 5G mobile communication using an Optical High-order Harmonic Generation for LiNbO3 Optical Intensity Modulator

We have newly developed a microwave signal generator for the 28 GHz band of 5G mobile communication using an optical high-order harmonic microwave generation technique. Our developed generator consists of a DFB laser diode, a LiNbO3 Mach-Zehnder optical intensity modulator, a signal generator from 13 GHz to 15 GHz, and a photo diode. In the case of the input frequency range from 13 GHz to 15 GHz to the LiNbO3 intensity modulator, we can generate microwave signal from 26 GHz to 30 GHz with an output level of more than -6.3 dBm that is large than 13 dB from our previous generator.