Samsung SGH 600, Service Manual

Page: 18 / 74

3-2 Transmitter Specification
3-2-1 Power
3-2-2 Power Ramping Time Level
The power-time template requirements for mobile
stations also apply to base stations. The only
difference is that, in the base station case, no short
burst (random access) exists. To measure the
template, the base station has to be operated in its
bursting mode . This test cannot be performed on the
base channel, since a base station has to transmit
continuously in all time slots. In most cases, an
additional channel besides the base channel has to
be activated or the transmitter under test is not
considered to be configured as a base channel
transmitter. The average peak power from the
previous part of the test is used as a reference. The
time reference is provided by the training sequence
in the middle of the burst. The template has to meet
the requirements of Fig. 6. Again, the noise level of -
70 dBc is dependent on the actual transmitted
power level. If this level is below -36 dBm, the
absolute level applies. The template is usually
evaluated along with the peak power level.
3-2-3 IF Filter
- 270 MHz LC Filter
3-2-4 TX SAW Filter
- Spurious signal atenuating : ²-70 dBc
- Wide Bandwidth to make plane Group delay
characteristic
3-2-5 Power Amplifier
- Total Efficiency: 40~45 % at Pin=1mW,
V
DD
=3.6 V, Pout=3.2 W
Power Peak Norminal Extreme
Control Level Power (dBm) (dB) (dB)
5 33 ±2 dB ±2.5 dB
6 31 ±3 dB ±4 dB
7 29 ±3 dB ±4 dB
8 27 ±3 dB ±4 dB
9 25 ±3 dB ±4 dB
10 23 ±3 dB ±4 dB
11 21 ±3 dB ±4 dB
12 19 ±3 dB ±4 dB
13 17 ±3 dB ±4 dB
14 15 ±3 dB ±4 dB
15 13 ±3 dB ±4 dB
16 11 ±5 dB ±6 dB
17 9 ±5 dB ±6 dB
18 7 ±5 dB ±6 dB
19 5 ±5 dB ±6 dB
3-2 Samsung Electronics
Specification
dBc
+4
+1
0
-1
-6
-30
-70
10 8 10 TO
(147 bits)
10 8 10 [
µ
s]
< Fig. 6 Power-Time Template >