Using Kirkby Microwave VNA calibration and verification kits on Copper Mountain vector network analyzers

Copper Mountain VNA

SMA calibration kit

The page gives you the information needed to use the 85033 SMA calibration and verification kit on Copper Mountain VNAs.

Installing the calibration kits definitions

It is absolutely essential that a VNA has the correct calibration constants for a calibration kit. Just taking random opens and shorts, and picking the N calibration kit from your VNA will result in incorrect measurements. They might look fine, and show a nice flat S12 and S21 of close to 0 dB, and an S11 and S22 of -60 dB or more, but the results of any measurements will be incorrect.

Since no Copper Mountain vector network analyzer will have the correct constants for this calibration kit, these must be entered as a user-defined calibration kit. The easiest way to do that is to download a file from our web site with the calibration kit definitions. The correct file to download depends on

85033 installed in Copper Mountain VNA

Copper Mountain VNA calibration kit

Copper Mountain follow the same methods as HP/Agilent/Keysight for defining their calibration kits. The fringing capacitance of an open is assumed to be given by the 3rd order polynomial:

Cfringing=C0x10-15 + C1x10-27f + C2x10-36f2+C3x10-45f3

where the capacitance is in Farads and the frequency in Hz. The offset delays of the opens and shorts are given as delays in ps.

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