How to calibrate the VNA using the commercial calibration kit?
I am going to build a simple 1 port network analyzer, how do I calibrate the VNA using the commercial calibration kit? For example HP Agilent 85033.
I read about the 1 port error model (http://na.tm.agilent.com/vnahelp/tip20.html), but where do I find the actual known standard value for the calibration kit?
Thanks
Each calibration kit has its own measured calibration coefficients and they are written on a paper or saved on a disk.
How can I access this disk or paper?
I know this is an old thread, but I just noticed it and thought I'd reply, as you might still want the information, or someone else might do.
There is not an Agilent 85033 kit. There are to my knowledge the following HP or Agilent kits with the 85033 prefix.
Obsolete
85033A SMA kit
85033B 3.5 mm kit
85033C 3.5 mm kit
85033D 3.5 mm kit
Current
85033E 3.5 mm kit
The parameters of the 85033D and 85033E can be found at
http://na.tm.agilent.com/pna/caldefs/stddefs.html
They are available as both binary files and human readable/HTML files. Be aware the HTML files are sometimes rounded, so the numbers are not always given with much precision. But the binary files you download are accurate.
Anyway, for completeness
For the opens of 85033D, 85033E, 85052B, 85052C, 85052D (both male and female)
C0=49.43, C1=-310.13, C2=23.17, C3=-0.16
Offset delay=29.243 ps
For the shorts of 85033D, 85033E, 85052B, 85052C, 85052D (both male and female)
Offset delay=31.808 ps
L0=2.0765, L1=-109.54, L2=2.1705, L3=-0.01
For the 85033C, the parameters can be found in the manual, or if you use Cal Kit Manager 2.1, you can read them yourself.
Opens of 85033C (both male and female)
Offset delay = 14.491 ps
C0=53, C1=150, C2=0, C3=0
Shorts of 85033C (both male and female)
Offset delay = 16.695 ps
L0=0, L1=0, L2=0, L3=0
I think the 85033B has the same constants as the 85033C, but I am not 100% sure on that.
Note the opens and short in the 26.5 GHz 85052B, 85052C and 85052D kits are the same as those in the lower frequency kits.
Dave