Experimental Demonstration of Multi-Band Comb-Enabled mm-Wave Transmission

A novel system architecture to realize multiple synchronized sources for multi-band mm-wave transmission has been designed and experimentally demonstrated in two of the W-band sub-bands at 100 and 112.5 GHz. The technique converts a distributed electro-optic comb, generated off-site, to a local electrical comb. The higher frequency tones in the resulting comb are extracted and used as mm-wave oscillator sources. Thus, the architecture provides a method to generate multiple frequency-synchronized sources, using only a single electronic oscillator, with exceptionally low phase noise for simultaneous multi-band mm-wave transmission. Additionally, a lower frequency tone at 6.25 GHz is broadcasted over the air, providing synchronization reference between the mm-wave transmitters and receivers.