A superconducting tunnel diode oscillator

Isidoro E. Campisi, Louisiana State University
William O. Hamilton, Louisiana State University


We have performed some preliminary measurements on a type of tunnel diode oscillator stabilized by two additional cavities. With proper choice of the couplings among cavities and their quality factors, it is possible to tightly lock the oscillator's frequency to a high-Q, superconducting cavity. Although the system is now operating with parameters not yet optimal, we have observed improvements in the stability performance of the three-cavity oscillator over the single-cavity one of a few orders of magnitude. © 1981 IEEE