A possibility of generating ultra-wideband chaotic oscillations in the frequency range up to 60 GHz using a bipolar SiGe heterotransistor is shown. The upper frequency boundary is determined by the cut-off frequency of the active element of the generator. Such a possibility is provided by means of adding a nonlinear circuit into the oscillator layout, in which chaotic oscillations can develop up to the specified frequency. The results of an experimental study of a lumped-element version of the oscillator are presented.
Experimental Analysis of 60-GHz VCSEL and ECL Photonic Generation and Transmission of Impulse-Radio Ultra-Wideband Signals