AnsweredAssumed Answered

Cal pod return loss is terrible in LOAD state

Question asked by WDrago on Jun 2, 2015
Latest reply on Jun 8, 2015 by Dr_joel

I'm trying to measure return loss on a 2 port device with calpods on each port. When I make the measurement I put the calpod on the opposite port into load state. I would expect that calpod to be acting as a good termination, but it is not. I see about 10 to 20 db return loss across the band of interest. When I replace the calpod with a real load, then measured return loss is much better.

Is this normal? Are the calpods really that bad?

Bill Drago
Senior Engineer
L3 Narda-MITEQ
435 Moreland Road
Hauppauge, NY 11788
631-272-5947 /