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CHAPTER 2:
System Overview
Model CRX-6.5K Probe Station
2.5.2 Ground
Return Path
A microwave probe cable consists of a microwave semirigid coaxial cable with
connectors permanently mounted on each end. The center conductor is the signal
path and extends to the center point on the probe tip. The outer conductor is the
reference ground path and extends to the two outer points of the GSG probe tip.
The outer conductor is also electrically connected to the microwave probe body so
the measurement reference ground is electrically connected to the sample cooling
assembly through the probe mount braids. Keep in mind that this electrical
connection may be broken if desired by removing the anchors from the sample stage;
however, please note that this will also remove the thermal connection.
FIGURE 2-29
K-type (2.92 mm) connectors—
published mode free to 40 GHz
FIGURE 2-30
V-type (1.85 mm) connectors—
published mode free to ~67 GHz
