User Guide

NSB-5
System Module PAMS Technical Documentation
Page 70 Nokia Mobile Phones Ltd. Issue 1 03/01
Third IF Filter
Table 27: Third IF filter specification
Third IF Buffer in SUMMA
Table 28: Third IF buffer specification
Transmitter Block
IQ Modulator and TX AGC in SUMMA
Table 29: IQ modulator specifications
Parameter Minimum
Typical/
Nominal
Maximum Unit/Notes
Center frequency, fo 13 MHz
1 dB bandwidth; 1 dBBW +/-90 kHz
Insertion loss 6.0 dB
Amplitude ripple at 1 dBBW 1.0 dB
Group delay ripple at 1 dBBW 1.5 µs p-p
Attentuations, relative to fo
fo +/-400 kHz
fo +/-600 kHz
fo +/-800 KHz
25
35
45
dB
Terminating impedance 313 330 347 ohms
Operating temperature range -20 +75 C
Storage temperature range -35 +85 C
Mechanical dimensions L=7.3 W=3.3 H=1.8 mm
Parameter Minimum
Typical/
Nominal
Maximum Unit/Notes
Voltage gain (single ended input and
balanced output)
34 36 38 dB
Maximum output level balanced
(RL=10kW) (harmonics -20dBc)
1.4 Vpp
Input impedance 6//4 kohms//pF
Output impedance (single end) 300 ohms
Buffer out to IF in isolation 55 dB
Parameter Minimum
Typical/
Nominal
Maximum Unit/Notes
Input frequency range 0 300 kHz