Thornton, BS 1967, 'Design of parametric phase-locked subharmonic oscillator circuits for 3ghZ information rates', Electronics Letters, vol. 3, no. 1, pp. 24-26.
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A stability analysis of parametric phase-locked subharmonic tunnel-diode circuits capable of bistable phase operation has been made. A new type of computer-produced stability-chart plot shows regions of amplifications for desired harmonics used in directional-flow logic circuits, to allow design for subharmonic pumping. © 1967, The Institution of Electrical Engineers. All rights reserved.