28-39 GHz distributed harmonic generation on a soliton nonlinear transmission line

A second-harmonic generation is reported in the 26-40-GHz band through soliton propagation on a GaAs monolithic nonlinear transmission line. At 20-dBm input power, a 20-diode structure attained <12-dB conversion loss for input frequencies from 13.5-18 GHz, with 9.3-dB minimum conversion loss, while a 10-diode structure attained <12-dB loss, 14-19.5 GHz (7.3-dB minimum). With reduction of conductor skin losses, broadband operation and peak conversion efficiencies approaching -3 dB are attainable.<
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