myRF
Junior Member level 1
Hi,
I need to do some return loss measurements on a PCB and was planning to use a piece of open-ended semi-rigid (034 size) with an SMA on the one end. This will allow me to solder the outer to a nearby ground pad and the inner conductor to the test point in question.
To calibrate to the end of the "probe" I was planning on just doing an open (nothing connected), short (solder blob between outer and inner), and load (51R 0402 chip resistor) between outer and inner.
I realise this is not an ideal calibration but the best method I can think of.
Does anyone have any better suggestions/tips?
Thanks.
I need to do some return loss measurements on a PCB and was planning to use a piece of open-ended semi-rigid (034 size) with an SMA on the one end. This will allow me to solder the outer to a nearby ground pad and the inner conductor to the test point in question.
To calibrate to the end of the "probe" I was planning on just doing an open (nothing connected), short (solder blob between outer and inner), and load (51R 0402 chip resistor) between outer and inner.
I realise this is not an ideal calibration but the best method I can think of.
Does anyone have any better suggestions/tips?
Thanks.