UPC8001 NEC, UPC8001 Datasheet - Page 13

• Manufacturer Part Number: UPC8001
• Description: IF AMPLIFIER IC WITH ON-CHIP MIXER FOR DIGITAL CELLULAR PHONES
• Manufacturer: NEC

The noise figure is calculated as follows:
NF (dB):
ENR (dB): ENR of noise source
Y: Y = 10
Remark This measurement measures DSB. To measure SSB, add 3 dB to NF above.
NF = ENR – 10 log (Y – 1)
N
N
1
2
(dBm): Spectrum analyzer indication value at SW OFF.
(dBm): Spectrum analyzer indication value at SW ON.
N
Noise figure
2
10
–N
1
Figure 3-6.
Spectrum
analyzer
28 V
SW
Noise source
HP346B
47 dB
HP8447F
Noise Figure Measurement
Amp
RF
5 pF 0.01 F
3 k
50
107 nH
0.01 F
0.01 F
11
14 MIX IN1
9
OSC IN
MIX OUT
PC8001
13