PRINTED BOARD WITH SUSPENDED SUBSTRATE Russian patent published in 2013 - IPC H01Q1/38 H05K1/03 

FIELD: electrical engineering.

SUBSTANCE: proposed is a printed board containing planar impedance conductors on a multilayered dielectric substrate with a metal screen; the dielectric substrate includes at least three layers, the thickness of each of the equal to a quarter of the operating wave length; the layers are made of a material with varied dielectric permeability and are positioned with linear decrease of the layers wave-pattern resistances from the screen plane towards that of impedance conductors. The printed board may be equipped with an additional multilayered dielectric screen positioned on the opposite side of the planar impedance conductors; the screen includes at least three layers, the thickness of each of the equal to a quarter of the operating wave length; the layers are made of a material with varied dielectric permeability and are positioned with linear increase of the layers wave-pattern resistances from the impedance conductors plane.

EFFECT: ensuring adaptation of the board dielectric layers to each other with linear decrease of their wave-pattern resistances from the screen plane towards that of impedance conductor which enables prevention of reflected wave occurrence in the cross section as well as ensuring the impedance conductors adaptation to the ambient air space.

2 cl, 3 dwg