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UPC8001 Datasheet(PDF) 13 Page - NEC

Part # UPC8001
Description  IF AMPLIFIER IC WITH ON-CHIP MIXER FOR DIGITAL CELLULAR PHONES
PDF  22 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPC8001 Datasheet(HTML) 13 Page - NEC

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µPC8001
13
Figure 3-6.
Noise Figure Measurement
The noise figure is calculated as follows:
NF = ENR – 10 log (Y – 1)
NF (dB):
Noise figure
ENR (dB): ENR of noise source
Y: Y = 10
N1 (dBm): Spectrum analyzer indication value at SW OFF.
N2 (dBm): Spectrum analyzer indication value at SW ON.
Remark
This measurement measures DSB. To measure SSB, add 3 dB to NF above.
N2–N1
10
11
9
14
MIX IN1
OSC IN
MIX OUT
5 pF
0.01
µF
107 nH
HP8447F
RF
Amp
Spectrum
analyzer
47 dB
50
Ω
0.01
µF
0.01
µF
3 k
Ω
Noise source
HP346B
SW
28 V



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