Technical Data Sheet
BITUB-4AL20
AISG 2.0 Bias-T with Surge Protection, 698-2690MHz, 7/16 Male on RF port; 7/16 Female on RF/DC/AISG port; AISG 2.0 Male on DC/AISG port
Product Description
BITUB-4AL20
The Bias-T is used to inject or extract DC current and the AISG 2.0 communication into/from the RF feeders. This Bias-T is especially dedicated to applications like DC feeding of devices such as the Tower Mounted Amplifier (TMA) for use in Remote Electrical Tilt (RET) systems. Furthermore, the Bias-T has an AISG 2.0 modem integrated that converts the 2.176 MHz on/off shift keying signal (OOSK) to RS485 communication. The Bias-T is compatible to the AISG 2.0 Protocol Standard (Antenna Interface Standardization Group). It offers built-in surge protection of outdoor mobile communications systems requiring DC power.
Features/Benefits
  • AISG 2.0 Protocol Compliant
  • Ultra-wide band for LTE 700 and LTE 2600
  • Small and compact outdoor units
  • Low insertion loss
  • Lightning protected
Technical Features
Product TypeDC Injector
ConfigurationSingle outdoor Bias-T with surge protection
Techn. ApplicationStandard AISG 2.0 Protocol Compatible
Bias-T Type7/16 Male on RF port; 7/16 Female on RF/DC/AISG port; AISG 2.0 Male on DC/AISG port
Frequency Band, MHz698.0 - 2690.0
Return Loss All Ports, Min, dB20
IMP Level at the ANT Port, Min, dBm-117 @ 2 x 43 dBm
Supported Voltage, V10-30
DC Resistance, Max, Ohms0.5
Nominal Current, mA25.0
Power Handling Continuous, Max, W400 W < 1 GHz < 250 W
Impedance, Ohms50.0
Insertion Loss any Passband, Max, dB0.15 (0.1 typical)
MountingStand alone
Temperature Range, °C (°F)-40.0 to 60.0 (-40.0 to 140.0 )
EnvironmentalIEC 60068
Ingress ProtectionIP 67 (mated)
Lightning Protection10 kA, 8/20mS Pulse
Dimensions, H x W x D, mm (in)74.0 x 74.0 x 62.0 (2.9 x 2.7 x 2.4)




All Information contained in the present datasheet is subject to confirmation at time of ordering.