Patent ID: 7197222
Filing Date: 2007-03-27
Classification: H01P

Abstract:
1. A signal transmission device comprising: a medium oriented in a first plane; a signal conduction path that is oriented in a second plane on a first planar side of the first plane, the conduction path comprising firstly, a first portion to conduct signals in a substantially coplanar waveguide mode and secondly, a second portion to conduct signals in a substantially microstrip waveguide mode; a first ground structure in at least one portion of the second plane, the first ground structure being oriented in relation to the conduction path first portion so that signals passing through the conduction path first portion generate an electric field that is substantially coplanar with the conduction path first portion and the first ground structure; and a second ground structure in a portion of a third plane on a second planar side of the medium and opposite the first planar side, the second ground structure being oriented in relation to the conduction path second portion and the medium so that signals passing through the conduction path second portion generate an electric field oriented substantially orthogonally to the second plane and extending through the medium, wherein material deposited along an exterior edge portion of the medium forms at least one low impedance connection between the first and second ground structures.