User Guide

CC Technical Documentation System Module
RM-11
Issue 1 02/2004 ©2004 Nokia Corporation Confidential Page 31
The coupler’s insertion loss is -0.42dB (max) at the cellular band and -0.48dB (max) at
the PCS band. Typical values for insertion losses are about -0.2dB. The filtering perfor-
mance of the diplexer is taken into account in system calculations.
Antenna Circuit
The antenna circuit stands for duplex filters and diplexer. The cellular band duplex filter
is a band pass type SAW filter with typical insertion loss at about -2.0dB. The PCS band
duplex filter is a band stop (for receiver band) ceramic filter and its typical insertion loss
is about -1.7dB. Insertion losses of the diplexer are -0.45dB and -0.55dB (at maximum)
for cellular and PCS band—typical values being about -0.30dB and -0.35dB.
RF Performance
The output power tuning target for power level 2 after diplexer (or after switch for
external RF) is +27.3dBm for p/4 DQPSK-type modulation and +24.5dBm for FM-type
modulation. Power levels downwards from PL2 are -4dB below next to the highest power
level, PL10 being -4.7dBm (and PL7 +6.5dBm with FM type of modulation). Modulation
accuracy and ACP are within the limits specified in IS-136/137.
Table 7: 800 MHz analog TX
Power
level
RF power at
external Antenna
Pad (dBm)
Tuning target
tolerant (dB)
Testing limits
(dB)
2 24.8 +/- 0.25 0.5/-0.5
3 22.0 +/-0.5 +/-2.0
4 18.5 +/-0.5 +/-2.0
5 14.5 +/-0.5 +/-2.0
6 10.5 +/-0.5 +/-2.0
7 6.5 +/-0.5 +/-2.0
Table 8: 800 MHz digital TX
Power
level
RF power at
external Antenna
Pad (dBm)
Tuning target
tolerant (dB)
Testing limits
(dB)
2 27.3 +/- 0.25 0.5/-0.5
3 23.3 +/-0.5 +/-2.0
4 19.3 +/-0.5 +/-2.0
5 15.3 +/-0.5 +/-2.0
6 11.3 +/-0.5 +/-2.0
7 7.3 +/-0.5 +/-2.0
8 3.3 +/-0.5 +/-2.0