2N PRI Gateways - User Manual - Manual (Page 28)

26
4. Antenna Splitter
4.1. Splitter description
Antenna splitter is the passive unit suitable for GSM gateways. It can combine maximum 16
antenna inputs to one 1 antenna output. Antenna splitter saves antenna cable, number of
outdoor antennas and mounting space on the roof.
As a passive unit it inserts the loss between antenna and the equipment. Splitter configuration
depends on signal level at concrete placing and number of using directions or GSM providers.
Splitter can be external (StarGate) or internal (BlueStar, BlueTower)
ƒ four inputs and one output splitter block
ƒ two inputs and one output splitter block
4.1.1. Standard configurations of external antenna splitter
NUMBER
OF INPUTS
NUMBER
OF OUTPUTS
INPUT – OUTPUT
INSERTION LOSS
UNIT
HIGH
32 2 < 15 dB 2U
32 4 < 11 dB 2U
32 8 < 8 dB 2U
16 1 < 15 dB 1U
16 2 < 11 dB 1U
16 4 < 8 dB 1U
12 3 < 8 dB 1U
Internal Antenna Splitter for BlueStar
Internal Antenna Splitter for BlueTower
External Antenna Splitter for StarGate