M. Delgadorestituto et al., CMOS 2.4-MU-M CHAOTIC OSCILLATOR - EXPERIMENTAL-VERIFICATION OF CHAOTIC ENCRYPTION OF AUDIO, Electronics Letters, 32(9), 1996, pp. 795-796
The Letter reports the first experimental verification of chaotic encr
yption of audio using custom monolithic chaotic oscillators. We use G(
m)-C techniques to realise a chaotic modulator/demodulator IC that imp
lements a 3rd-order nonlinear differential equation. This has been fab
ricated in 2.4 mu m double-poly technology and includes on-chip tuning
circuitry based on amplitude detection. Measurements demonstrate how
to exploit the synchronisation between two of these ICs for encrypted
transmission.