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Calibration for Channel Sounding

Question asked by cobolcjava on Feb 24, 2011
Latest reply on Feb 25, 2011 by Dr_joel
Hello Forum,

I am trying to calibrate the PNA N5230A for a wireless channel sounding experiment. I have two transmitters connected to ports 1 and 2 and two receivers connected to ports 3 and 4. I basically need to measure S31, S32, S41 and S42. I have two 60 feet cables connected to the transmit ports followed by a power amplifier on both before hooking up to the antennas. I have 2 short cables connecting the receiving antennas to their respective ports.

Now I want to calibrate out the effect of all the cables and the amplifier. To do so I am doing the following:


Connect the output of the amplifier at port 1 to the cable leading to port 3. (For S31)
Calibration -> Unguided calibration -> Response  -> Thru

Connect the output of the amplifier at port 2 to the cable leading to port 3. (For S32)
Calibration -> Unguided calibration -> Response  -> Thru

Connect the output of the amplifier at port 1 to the cable leading to port 4. (For S41)
Calibration -> Unguided calibration -> Response  -> Thru

Connect the output of the amplifier at port 2 to the cable leading to port 4. (For S42)
Calibration -> Unguided calibration -> Response  -> Thru


Then I save the state in a .csa file and use it for subsequent measurements.

Can someone advice me on if I am following the correct steps?

Thanks a million in advance.  

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