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lna NF (Read 2990 times)

mixed_signal Senior Member Offline Posts: 183	lna NF Apr 20^th, 2014, 6:35pm I am designing a square law LNA. But when I replace ideal inductors with non-ideal (Q=14) ones then NF increases by 6dB!!! Can anyone suggest whats happening?
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mixed_signal Senior Member Offline Posts: 183	Re: lna NF Reply #1 - Apr 20^th, 2014, 6:37pm inductors for i/p matching network
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aaron_do Senior Fellow Offline Posts: 1398	Re: lna NF Reply #2 - Apr 20^th, 2014, 6:41pm Is the frequency response still the same? Perhaps you didn't take into account the parasitic capacitance? Does it have anything to do with this being a square-law LNA (not sure what that is...)? Aaron
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mixed_signal Senior Member Offline Posts: 183	Re: lna NF Reply #3 - Apr 22^nd, 2014, 7:12am I am sorry! Its a square law mixer. Using nonlinearity (MOS square law) for downconversion.
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Mir Junior Member Offline Posts: 25 Kashmir	Re: lna NF Reply #4 - Apr 27^th, 2014, 12:45am matching needs to be done properly
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