Care and Handling of Precision Connectors
Device Specifications
2-5
the entire length of the center conductor. In addition, the diameter of both the
center and outer conductors of an SMA connectors differ from that of a precision
3.5 mm connector.
If these precautions and recommendations are followed, SMA connectors can
be mated with 3.5 mm precision connectors without fear of expensive and time
consuming repairs.
Figure 2-1
SMA and a Precision 3.5 mm Connectors
When an SMA connector is mated with a precision 3.5 mm connector, the
connection exhibits a continuity mismatch (SWR), typically about 1.10 at 20
GHz. This mismatch is less than when precision 3.5 mm connectors are mated.
Keep this fact in mind when making measurements on SMA and precision 3.5
mm coupled junctions.
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