Receiver Blocks; Lna In Crfu_2A; Gsm1900 Receive Interstage Filter - Nokia NSB-5 Series Technical Documentation Manual
System module
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Also See for NSB-5 Series:
- Disassembly instructions manual (6 pages) ,
- Troubleshooting instructions (24 pages)
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Receiver Blocks
LNA in CRFU_2a
Parameter
Frequency range
Gain
NF
HP3
1dB input compression
point (AGC=H)
Absolute gain reduction
@ 1900...2000MHz
Relative step accuracy
NF, when AGC-L
AGC settling time
Reverse isolation
GSM1900 Receive Interstage Filter
Parameter
Center frequency; fo
Operating temperature range
Passband
Terminating impedance
Insertion loss in passband
Amplitude ripple in passband
Return loss in passband
Attenuation relative to fo
DC...900MHz
Attenuation relative to fo
900...1100MHz
Attenuation relative to fo
1100...1700MHz
Issue 1 03/01
Table 19: LNA requirements
Typical/
Minimum
Nominal
1930
15.5
16.5
2.0
-10
-8
-18
-12
34
-2
18
21
Table 20: Electrical charactistics
Min
Typ
Max
1960
-30...+85
1930...1990
50
2.5
3.0
1.0
10
20
45
20
Nokia Mobile Phones Ltd.
Maximum
Unit/Notes
1990
17.5
+2
dB/over temp. range
approxi-
mately 1.8
1
Unit/notes
MHz
deg. C
MHz
ohms
dB
dB
dB
dB
dB
dB
NSB-5
System Module
GHz
dB
dB
dBm
dBm
dB
dB
us
dB
Page 65
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