Jason:

Now that you have been directed to the theoretical discussion, let me alert you to some of the practical problems in
doing these measurements. Because of the very nature of the effect to be measured, the dynamic range required of the
test equipment approaches and sometimes exceeds the limits of even the very most expensive laboratory equipment.
Getting accurate measurements using average grade equipment requires a lot of caution, novel approaches, and it is often
simply not possible to make measurements with accuracy and repeatability of better then +/- 3 dB. Some quick examples:
power summers (dividers) are non-linear, intermodulation occurs in the most unexpected places, filters are either too
lossy or too broad, and so on.

--
Crazy George

the ATTGlobal.net is a SPAM trap. Use the att dot biz account.
"Jason" wrote in message oups.com...
Hello All(Airy, Caveat, Frank, Richard...)

Thank you for all the comments and advices given.
Do allow me some time to check that application notes out before
posting back to you .
I hope we can discuss more sooner
Kindly be patient

Thank you all

best rgds and thanks
Jason