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Proceedings Paper

Electric field detectors in a coupled ring configuration: preliminary results
Author(s): B. Ando; S. Baglio; F. Di Grande; F. Passaniti; N. Savalli; V. In; A. R. Bulsara
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Paper Abstract

This paper deals with a novel strategy for the detection of weak static electric fields. The approach proposed here is based on the exploitation of the nonlinear behaviors shown by a circuit made up by the ring connection of an odd number of elements containing a ferroelectric capacitor. The presence of a weak external dc perturbation interacting with the system state can be detected and quantified via its effect on the oscillation frequency and on the asymmetry of the system output signals. The dynamic behavior of the ferroelectric ring can be described by using the equations of the "quartic double well" potential that model the ferroelectric capacitors where the target electric field is considered as a perturbation in the polarization status of each ferroelectric element. Simulation results have been obtained where it can be observed, for a coupling factor greater than the critical one, as related to the external field amplitude, the change in the harmonic content of the permanent oscillation that the coupled system generates. A detailed spice model of the ferroelectric capacitor and of the ring circuit will be described in this paper together with some results regarding the experimental characterization and modeling of ferroelectric capacitors to be included in the actual circuit. Several experimental confirmation have been already obtained. Work is currently in progress toward the realization of a novel ring circuit that will include the ferroelectric capacitors presented here.

Paper Details

Date Published: 3 January 2007
PDF: 11 pages
Proc. SPIE 6417, Complexity and Nonlinear Dynamics, 641702 (3 January 2007);
Show Author Affiliations
B. Ando, Univ. degli Studi di Catania (Italy)
S. Baglio, Univ. degli Studi di Catania (Italy)
F. Di Grande, Univ. degli Studi di Catania (Italy)
F. Passaniti, Univ. degli Studi di Catania (Italy)
N. Savalli, Univ. degli Studi di Catania (Italy)
V. In, Space and Naval Warfare Systems Ctr. (United States)
A. R. Bulsara, Space and Naval Warfare Systems Ctr. (United States)

Published in SPIE Proceedings Vol. 6417:
Complexity and Nonlinear Dynamics
Axel Bender, Editor(s)

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