Nokia 6090 Service Manual
PAMS
Technical Documentation
NME–3
Technical Information
Page 47
Issue 1 10/99
Pre–amplifier Specifications
The LNA is a discrete solution using a BFP420 as active component.
Table 22. LNA requirements
Parameter
Min.
Typ.
Max.
Unit/Notes
Frequency band
935 – 960
MHz
Supply voltage
2.7
2.8
2.855
V
Current consumption
25
mA
Insertion gain Mag(S
21
)
19
20
21
dB
Noise figure
1.8
2.0
dB,PDATA0=H
IIP3
–2
dBm, PDATA0=H
Input 1 dB compression point
–12
dBm, PDATA0=H
Reverse isolation Mag(S
12
)
25
dB
Input matching Mag(S
11
)
–7
dB
Output matching Mag(S
22
)
–10
dB
Gain reduction
35
40
dB,room temp.
Step accuracy
–2
+2
dB,over temp.range
Noise figure, when PDATA=0
25
dB
RX Interstage Filter
Table 23. RX interstage filter requirements
Parameter
Min.
Typ.
Max.
Unit
Passband
935 – 960
MHz
Insertion loss
4.0
dB
Ripple in passband
1.0
dB
Attenuation DC...890 MHz
35
dB
Attenuation 890...915 MHz
15
dB
Attenuation 980...1030 MHz
15
dB
Attenuation 1067...1102 MHz
35
dB
Attenuation 1102...1500 MHz
30
dB
Terminating impedance
50
ohm
Input matching Mag(S
11
)
–9.5
–9.5
dB
Maximum drive level
+10
dBm