Optimum subharmonic pumping frequency for parametric tunnel-diode memory arrays

Tunnel-diode parametric phase-locked oscillators may be used as very fast memory elements, and excessive pumping frequencies can be avoided by using subharmonic pumping. The effect of the small capacitive and inductive couplings between diodes used closely in quantity has been investigated. Computed pumping eigenfrequencies for the array can be significantly different from those when coupling effects are neglected.