Physics
Scientific paper
May 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994stt..conf..735b&link_type=abstract
Proceedings of the Fifth International Symposium on Space Terahertz Technology, held May 10-12, 1994, at the University of Michi
Physics
Scientific paper
An oscillator using several tunneling devices in series has a difficult excitation condition due to the difference in the I-V characteristics of the individual devices and to the DC instability triggered by the noise. Due to the DC instability, a bias voltage tends to be distributed so that all the devices are biased in the positive differential resistance (PDR) region. A fast electrical pulse, optical illumination or RF source may be used to overcome this problem. The RF source is used only to redistribute the total bias voltage applied to the devices, so that they would all be biased in the negative differential resistance (NDR) region, and is applied for the short amount of time. Simulation results for the RF source excitation will be presented, as well as one experimental example.
Boric-Lubecke O.
Itoh Toshiya
Pan Dee-Son
Sun Rongfeng
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