Nokia 2220 Servicehandbuch
RH-42
System Module
CCS Technical Documentation
Page 48
Nokia Corporation Confidential
Issue 2 09/2003
False TX indication is based on detected power measurement when carrier is not on.
The insertion loss of coupler is –0.42dB (max) at cellular band. Typical values for inser-
tion losses are about –0.2dB. The filtering performance of diplexer is taken in account in
system calculations.
tion losses are about –0.2dB. The filtering performance of diplexer is taken in account in
system calculations.
Antenna Circuit
Here the antenna circuit stands for duplex filters and the diplexer. The cellular band
duplex filter is band pass type SAW filter with typical insertion loss about –2.0dB. Inser-
tion loss of diplexer is –0.45dB (at maximum) for cellular, with typical value being about
–0.30dB.
duplex filter is band pass type SAW filter with typical insertion loss about –2.0dB. Inser-
tion loss of diplexer is –0.45dB (at maximum) for cellular, with typical value being about
–0.30dB.
RF Performance
The output power tuning target for power level 2 after diplexer (or after switch for exter-
nal RF) is +27.3dBm for digital modes and +24.0 dBm for analog mode. See the following
table. Modulation accuracy and ACP will be within limits specified in IS-136/137.
nal RF) is +27.3dBm for digital modes and +24.0 dBm for analog mode. See the following
table. Modulation accuracy and ACP will be within limits specified in IS-136/137.
Antenna
The RH-42 antenna solution is an internal, dual-resonance PIFA. This antenna has a
common feeding point for both antenna radiators, which results in the need for a
diplexer.
common feeding point for both antenna radiators, which results in the need for a
diplexer.
Power Level
PGA
Pout
TDMA800
AMPS
2
3
27.3 24.0
3
4
23.3 21.0
4
5
19.3 17.5
5
6
15.3 13.5
6
7
11.3 9.5
7
8
7.3 5.5
8
9
3.3
-
9
10
-0.7
-
10
11
-4.7 -
-