@article{oai:toyama.repo.nii.ac.jp:00018393,
 author = {Maezawa, Koichi and Ito, Tatsuo and Mori, Masayuki},
 journal = {IEICE TRANSACTIONS on Electronics},
 month = {Jun},
 note = {A hard-type oscillator is defined as an oscillator having stable fixed points within a stable limit cycle. For resonant tunneling diode (RTD) oscillators, using hard-type configuration has a significant advantage that it can suppress spurious oscillations in a bias line. We have fabricated hard-type oscillators using an InGaAs-based RTD, and demonstrated a proper operation. Furthermore, the oscillating properties have been compared with a soft-type oscillator having a same parameters. It has been demonstrated that the same level of the phase noise can be obtained with a much smaller power consumption of approximately 1/20., Article, IEICE TRANSACTIONS on Electronics},
 title = {Experimental demonstration of a hard-type oscillator using a resonant tunneling diode and its comparison with a soft-type oscillator},
 year = {2021}
}