Research/Patents/US 5627541
US 5627541

INTERFERENCE TYPE RADIATION ATTENUATOR

Assignee

Filed

Nov 6, 1981

Granted

May 6, 1997

Location

Abstract

An attenuator of electromagnetic radiation, such as radar, is described wherein a single attenuator sheet in the nature of "spacecloth" is placed in front of a plurality of reflective layers wherein each of the reflective layers is tuned to reflect a narrow band of radiation of a selected frequency and transmit other frequencies; and each of the reflective layers is spaced from the attenuation layer at a distance of one-fourth of the wavelength of electromagnetic radiation to which it is tuned. In a preferred embodiment each of the reflective layers comprises elongated narrow conductive areas arranged in spaced apart columns and rows in a generally non-conductive area.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Nov 6, 1981

Rescinded

May 10, 1996

Duration

14 years, 6 months

Inventor

  • 1Unknown Unknown

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records