Title :
Operation of tunnel diodes above their resistive cutoff frequency
Author :
Serophim, G.R.S. ; Stephenson, I.M.
Author_Institution :
University College, London, England
Abstract :
Tunnel diodes have been made to operate above their resistive cutoff frequency by mounting them in tapered waveguides. The output is apparently due to harmonics of a lower frequency oscillation. The fundamental frequency was detected by means of a probe placed close to the diode. Examination of the diode´s equivalent circuit indicates that it is unlikely that oscillations can occur above the resistive cutoff frequency.
Keywords :
Ceramics; Cutoff frequency; Diodes; Directional couplers; Equivalent circuits; Frequency measurement; Impedance; Local oscillators; Probes; Tuners;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1966.5062
