Radio Configurations, RBS 2000 Micro
1800 MHz:
36 (dec)
1900 MHz:
36 (dec)
3.5.2
RX Description
The receiver system performance is dependent on the configuration.
Actual sensitivity level
Is defined in and complying with the level where RBS meets the
reference sensitivity performance defined in:
- /GSM:05.05:6.2 / for GSM 900 and GSM 1800
- /PCS:4/ and /PCS:5.1.1/ for GSM 1900.
Radio reception
The receiver sensitivity is reduced when a third order intermodulation
product, generated by the radio transmitters in the RBS, is received at
the same RCFN as the useful signal.
This occurs when the distance in frequency between two simultaneous
transmitters is chosen in a way that a third order intermodulation
product is generated at the same frequency as the operating frequency
of one of the receivers in the RBS.
Note:
In RBS 2301 the receiver sensitivity will be decreased by 1
dB when a third order transmitter intermodulation product
coincides in frequency with an active frequency used by the
receiver.
3.5.3
Isolation values
The isolation requirements between two antennas belonging to the same
RBS is reduced and shall at least be:
- for GSM 900:
15 dB
- for DCS 1800 MHz and PCS 1900 MHz:
20 dB
- for Maxite, GSM 1800 and GSM 1900:
30 dB
3.5.4
Omnidirectional Antenna
GSM 900
Beamwidth:
For omnidirectional antennas, specification
on beamwidth is replaced by the
specification on gain.
Space Diversity Separation: The two antennas has a horizontal
separation of at least 0.5 wavelength c/c or
a vertical separation of 1.0 wavelength c/c.
Power Handling:
The Antenna is able to handle a
continuous output of 10 W.
EN/LZT 123 2697
R5A
1998-08-13
25 (306)
© Ericsson Radio Systems AB
— All Rights Reserved —
