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dissipation loss..........RF, Microwave and Antennas

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abhi_AB

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what is dissipation loss??
.....
what is the meaning of formula for dissipation loss..

dissipation loss = 10 log ((1-(S11^2))/(S21^2)) base10

what does this graph indicates??(attached dissipation.jpg
 

Is your equation with the division correct? There is something like dissipation loss, but that is 1-( |S11|^2 + |S21|^2 ). It is the loss in the DUT, calculated from comparing incident power minus reflected power minus transmitted power.
 

i was bit confused with the dissipation loss relation.....
what outcomes can be drawn from the dissipation loss vs frequency graph??....attached
 

I think your equation makes no sense with S11^2/S21^2 and so your graph makes no sense.
 

yes you are right......its
1-( |S11|^2 + |S21|^2 )
and graph is for this equation only.....
And if I'm not wrong .....from graph it can be concluded that loss is minimum for 3-4GHz....
what other outcomes??
 

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