Wave transmission lines and networks – Long lines – Strip type
Patent
1996-07-05
2000-02-08
Pascal, Robert
Wave transmission lines and networks
Long lines
Strip type
333 12, 333247, 257664, 257778, H01P 308, H01P 500, H01L 2940
Patent
active
060232099
ABSTRACT:
Two or three conductor coplanar transmission lines and lossy coplanar resistive films are formed on a surface of a substrate. The resistive film dimensions and resistivity are selected to suppress various spurious electromagnetic modes within and around the substrate. The resistive films may be positioned along the outer edges of the transmission lines or between the transmission line conductors. The resistive film may have regular spaced openings for producing an average resistivity different than that of a continuous resistive film. In one embodiment, a signal conductor has a serpentine shape and resistive film elements are positioned between adjacent sections of the signal conductor. In another embodiment, interdigitated resistive film elements extend between transmission line conductors.
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Faulkner Mark V.
Mohwinkel Clifford A.
Stoneham Edward B.
Vaughan Mark J.
Endgate Corporation
Pascal Robert
Steres George M.
Summons Barbara
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