Lect9_Aerial Access(I)

Lect9_Aerial Access(I) - ECE 620 Introduction to RF...

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ECE 620 Introduction to RF Integrated Circuits Prof. Waleed Khalil Lecture Aerial Access(I) 9 1
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Outline Spurious-free Dynamic Range Duplexing FDD 2
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Spurious-free Dynamic Range, SFDR (1/2) “The ratio between : 1) the maximum input signal power at which the 3 rd order IMD level equals the noise power to 2) the minimum detectable signal power (i.e. noise + SNR min ) ” 3 P in Slope = 1 3 IP 3 IIP 3 OIP 3 Noise Floor SNR min SFDR P out Noise Floor SFDR F, G kT o B S out, ω 1, ω2 , N out Spurs << Noise Floor Spurs = Noise Floor Spurs >> Noise Floor S in, ω 1 ω 1 2 1 - ω 2 2 - ω 1 1 2 1 - ω 2 2 - ω 1 1 2 1 - ω 2 2 - ω 1 S in, ω2 S out N out =FGkT o B N out =FGkT o B N out =FGkT o B S in Increasing
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Spurious-free Dynamic Range, SFDR (2/2) 4 [ ] ( ) min max log 10 SNR kTB NF P dB SFDR in_ + + = Replacing voltage w/ power terms ( ) ( ) out IM out IP out IM out IP IP A A A A A A IM IM A A A A IM = = = = 3
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This note was uploaded on 11/21/2011 for the course ECE 620 taught by Professor Khalil during the Fall '11 term at Ohio State.

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Lect9_Aerial Access(I) - ECE 620 Introduction to RF...

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