FREQUENCY-SELECTIVE CURRENT-CONDUCTIVE SURFACE MOUNTING ARC-SHAPED AND RECTILINEAR COMPONENTS Russian patent published in 2007 - IPC H01Q1/32 H05B3/84 

FIELD: transparent parts covered with electricity-conductive coating and frequency-selective surface for passing preset electromagnetic-spectrum frequencies.

SUBSTANCE: proposed current-conductive coating of motor-car heated windshield is provided with coupling window having frequency-selective surface that incorporates specially organized passage regions and blocking ones for preset electromagnetic spectrum waves. Frequency-selective surface of one design alternate has structure incorporating first and second plurality of arc-shaped interrupted lines, each having at least one passage section and blocking regions disposed between these lines. Frequency-selective surface of other design alternate has many columns spaced apart by solid elongated blocking region. Each column has passage regions.

EFFECT: improved uniformity of frequency-selective surface heating, that is, reduced intensity of hot and cold spots.

46 cl, 14 dwg