Wave transmission lines and networks – Coupling networks – Balanced to unbalanced circuits
Patent
1992-07-17
1994-05-10
Nelli, Raymond A.
Wave transmission lines and networks
Coupling networks
Balanced to unbalanced circuits
333 33, H03H 500
Patent
active
053111532
ABSTRACT:
An integrated waveguide/stripline signal transition structure and method for fabricating the same are provided for allowing high frequency signal transitions. The signal transition structure includes a waveguide which has a conductive cavity for guiding electromagnetic waves therethrough. A first conductive circuit layer is fabricated within the conductive cavity and is electrically connected thereto. A second conductive signal layer is fabricated within the conductive cavity and is isolated from the conductive cavity and the first conductive signal layer. A plurality of dielectric layers are provided which suspend the first and second conductive signal layers within the conductive cavity. The second conductive signal layer and the conductive cavity thereby allow for signal transitions therebetween. The first and second conductive signal layers and dielectric material are integrally fabricated on top of a removable material which is subsequently removed. In an alternate embodiment, a single dielectric layer is provided for suspending the first and second conductive signal layers. In addition, an array of signal transition structures may be integrally fabricated within a housing structure.
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Lau James C.
Lui Kenneth
Malmgren Richard P.
Nelli Raymond A.
Taylor Ronald L.
TRW Inc.
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