Laminated panel with low reflectance for radio waves

Details Laminated panel with low reflectance for radio waves Laminated panel with low reflectance for radio waves

1992-08-07

1994-11-15

Loney, Donald J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428167, 428172, 428209, 428213, 428215, 428333, 296 841, 343909, D06N 704, H01Q 1502

Patent

active

053646851

ABSTRACT:
The matter of concern is the reflection of a radio wave such as a television broadcast wave from a laminated panel having a substrate low in reflectance for radio waves and a layer relatively high in reflectance for radio waves. The reflection is greatly reduced by dividing the reflective layer into a plurality of discontinuous segments by a series of relatively narrow slits such that the width of each segment in the direction parallel to the direction of the electric field of the radio wave is not greater than 1/3 of the wavelength of the radio wave. The invention is suitable for application to a heat reflecting glass with a heat reflecting film having a surface resistivity below about 500 .OMEGA./.quadrature., and in that case it is preferable that the width of each segment of the heat reflecting film is not greater than 1/20 of the wavelength.

REFERENCES:
patent: 3396400 (1968-08-01), Kelly et al.
patent: 4479131 (1984-10-01), Rogers et al.
patent: 5162145 (1992-11-01), Schaefer
Lee et al., "Simple Formulas for Transmssions . . . ", IEEE Antennas & Propagation Magazine, vol. 30, No. 5, Sep. '82, pp. 904-909.

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