Wave propagation structures for eliminating voltage surges and a

Details Wave propagation structures for eliminating voltage surges and a Wave propagation structures for eliminating voltage surges and a

1987-09-16

1989-06-20

Nussbaum, Marvin L.

Wave transmission lines and networks

Automatically controlled systems

Limiting of amplitude

333 81A, 333245, 333246, H01P 122, H01P 306, H01P 308

Patent

active

048412597

ABSTRACT:
A four-pole or three-pole structure adapted to propagate an electromagnetic wave, such as an electrical line or cable or electronic component, comprises a lossy non-linear dielectric material distributed in a wave propagation direction. This material has a non-linear conduction characteristic whereby it is substantially non-conductive at any rated applied voltage of the structure and substantially conductive at any abnormally high applied voltage. It consists of a polycrystaline material comprising thin interstitial layers procuring a tunneling or Schottky type effect in response to a high electric field resulting from such abnormally high applied voltages. It absorbs both voltage surges (varistor effect in the time domain) and high-speed transients (lowpass filter effect in the frequency domain). The structure can be used to provide protection against lightning strikes, nuclear electromagnetic pulses, electrostatic discharges and radio-frequency interference in general.

REFERENCES:
patent: 4344047 (1982-08-01), Dixon, Jr.
patent: 4388632 (1983-06-01), Richardson
patent: 4495482 (1985-01-01), Philipp
patent: 4571559 (1986-02-01), Henry et al.
patent: 4642584 (1987-02-01), Funck et al.

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