Patent ID: 6023210
Filing Date: 2000-02-08
Classification: H01P,H05K

Abstract:
An electrical device having a plurality of conducting layers for guiding electromagnetic signals at a selected wavelength, comprising:first, second, and third conducting layers sequentially spaced from and disposed to overlap one another to form a stack, said second conducting layer configured to define an aperture as a coupling slot which is elongated in an elongated axis thereof;a first elongated planar conductor configured to comprise a first stripline and a first coupling electrode elongated along said first stripline, said first planar conductor located between said first and second conducting layers to at least partially align said first coupling electrode with said coupling slot and to align said first stripline parallel to said elongated axis, wherein said first stripline combines with said first and second conducting layers to form a first waveguide of a first characteristic impedance for transmitting electromagnetic waves; anda second elongated planar conductor disposed between said second and third conducting layers in parallel to said first planar conductor, said second planar conductor having a structure substantially identical to said first planar conductor and comprising a second stripline and a second coupling electrode, wherein said second stripline combines with said second and third conducting layers to form a second waveguide having said first characteristic impedance and said second coupling electrode is at least partially aligned with said coupling slot along said elongated axis,wherein said first conducting layer, said first coupling electrode, said second coupling electrode, and said third conducting layer form a transition waveguide which effects an interconnection between said first and second waveguides and has a second characteristic impedance substantially equal to said first characteristic impedance, thereby promoting energy coupling between said first and second waveguides.