Hi, i am using an IC that takes an rf input of 2017MHz, but the datasheet says that to give the best tradeoff between noise figure, gain etc I should put a source impedance of 31+j26 ohms on the input. Can somebody help me relate this figure to the actual components I should use?
my understanding is that a +j figure means inductive, but if I had a 31ohm resistor followed by a j26 inductor in series i.e X=2*pi*f*L then L = 2nH. However does a series inductor not block AC? My other thought is that some sort of series resistor/parallel inductor could create this 31+j26 figure, but how would I work this out?
Hope someone can help...
Thanks
Tom
my understanding is that a +j figure means inductive, but if I had a 31ohm resistor followed by a j26 inductor in series i.e X=2*pi*f*L then L = 2nH. However does a series inductor not block AC? My other thought is that some sort of series resistor/parallel inductor could create this 31+j26 figure, but how would I work this out?
Hope someone can help...
Thanks
Tom