3
MyAmplifiers.com - +44 977215553 (UK) , +33 977215553 (France),
E-mail:
-
Skype:
gsm_amplifier
www.myamplifiers.com
3. Technical 3G Signal Booster specification
Specification
Frequency
range(MHz)
Up link
1920-1980
Downlink
2110-2170
Gain(dB)
Up link
65
Downlink
70
Output power(dBm)
15
Pass band ripple
≤5dB
Guard band rejection
(BW-
60dB)≤42 MHz(BW-70dB)≤45 MHz
I/O impedance
50
/N Connector
I/O return loss
≤-10dB
Noise figure
≤8dB
Intermodulation attenuation
(Po=5dBm)
≥38dBc
Transmission Delay
≤0.5us
Ambient temperature
-10
℃～
50
℃
Power supply
AC110
～
220V±10% 45
～
55Hz
Size
158mm*136mm*37mm
Reliability
To the GB6993-86 standard
Electromagnetic
compatibility
To the ETS300 694-4 standard
Function
a) Power supply LED denote
4. System structure
A simple signal amplifier system is composed of a host
signal amplifier, reverse antenna and in-door covering
system. Reverse antenna aims at the reverse base station
that requires for expanding the coverage, the BTS Port of
the host signal amplifier is connected with reverse antenna
and
User’s Port is connected with in-door covering system.
As shown in the following diagram, firstly, the indoor signals
introduced by the signal amplifier are divided into two-way
signals by splitters, then each signal is distributed two
antennas through a coupler with the power distribution ratio
equal to circuit exhaust ratio so as to ensure both of the
antennas to obtain equal power (splitter and coupler may
can be configured flexibility). It shall be attached importance
that at least 15dB of the isolation shall be bigger than the
plus between reverse antenna and covering system for
meeting
the
requirements
of
C/I
≥15dB of the
GSM/CDMA/DCS/PCS system.
220V
System structure diagram
BTS
Signal amplifier
spl
it
ter
Coupler
Coupler
