Spatial transformer for RF and low current interconnect
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United States of America Patent
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-
Sep 16, 2008
Grant Date -
Nov 22, 2007
app pub date -
May 18, 2006
filing date -
May 18, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A spatial transformer includes an insulating substrate; a plurality of test terminal assemblies on the substrate; and a plurality of contact surfaces on the transformer, each providing an interconnection point for electrical connection between a respective test terminal assembly and a device under test. Each test terminal assembly has a center conductor trace on an upper substrate surface; a lower substrate guard trace beneath the center conductor trace; and a pair of upper substrate guard traces adjacent to opposite sides of the center conductor trace, the guard traces being electrically interconnected. The guard traces in combination with the center conductor trace provide a desired characteristic impedance for an RF signal applied therebetween or a guarded DC connection for a DC signal applied to the center conductor trace and a DC guard applied to the guard traces.
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