Artificial resistive card

Details Artificial resistive card Artificial resistive card

1989-11-24

1992-06-30

Lateef, Marvin M.

Electrical resistors

With base extending along resistance element

338314, 338195, H01C 1012

Patent

active

051267160

ABSTRACT:
An artificial resistive card which prevents scattering due to diffraction, and which forms impedance transitions from ground planes to antenna apertures or to free spaces, incorporates resistive and conductive layers formed on a substrate. The conductive layer is etched away, either partially or entirely, using integrated circuit technology in order to vary the resistivity of the resistive card. Portions of the resistive layer may also be etched away to expose the underlaying substrate and increase the resistivity of the resistive card. The size and dimension of the resistive and conductive pattern left after etching determines the value of the resistivity and is easily and accurately reproduced.

REFERENCES:
patent: 4931764 (1990-06-01), Gaston

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