Calibration 75ohm in 50ohm environment

[ropt728]

hi all,

I am calibrating for 75 ohm environment with matching pad 50-75ohm and 3.5mm 50ohm Rf cable and TRL cal board(75ohm)

Problems starts here
to calibrate off the loss for the matching pad, i need to connect a adapter to my matching pad.
The adapter have to be 75ohm nominal impedance, N-type (female) to SMA (male)......
Anyone know where can i buy this adapter with this specific criteria ?

or is there any other way that i can perform my calibration without using the matching pad and adapter form 50 ohm to 75 ohm environment ?


gladly welcome for any response

 

[BigBoss]

There is 50 Ohm-75 Ohm"Minimum Loss Pad" in different combinations from Agilent and Maury Microwave.
Contact with t hem..

 

[ropt728]

thanks but, i already have the minimum loss pad.What i needed is the adapter from output of the MLP to the cal board

The adapter have to be 75ohm nominal impedance, N-type (female) to SMA (male)

 

[BigBoss]

thanks but, i already have the minimum loss pad.What i needed is the adapter from output of the MLP to the cal board

The adapter have to be 75ohm nominal impedance, N-type (female) to SMA (male)

SMA connectors are always 50 Ohm.That's why you can not find 75 Ohm N(F)-SMA(M) adapter.