BIU Base Station Interface
BIU
BIU Base Station Interface
Bird Technologies - The RF Experts

BIU

The Base Station Interface Unit is the RF interface between the Radio Base Station and the Fiber-DAS system. This unit monitors the signal levels from the base station and has settable attenuators both in the uplink and downlink paths. The BIU connects to the Point of Interconnect (POI) which distributes the signals over the fiberoptic interfaces belonging to the same sector.

KEY FEATURES
  • Large selection of frequency bands available
  • Duplex or no duplex as option
  • Radio access technology agnostic
  • Multi operator and multi carrier
  • Two separate RF paths
  • Options with high or low input depending on type of BTS
  • Test ports for checking signal levels without interrupting service
  • Completely software monitored and controlled
  • Settable supervision thresholds for high/low operator input signals
  • External alarm interface with inputs/outputs
  • RoHS Compliant

The BIU exists in two versions, high power and low power. Where the specifications are different they are clearly marked for which version the specification is used.


Maximum input power non-destructive, composite: 36 dBm (Standard); 20 dBm (Low Power)
Recommended RF input level, composite: 13 to 33 dBm (Standard);  -10 to +10 dBm (Low Power)
Alarm high input level: >33 dBm (Standard);  >13 dBm (Low Power)
Alarm low input level: <13 dBm (Standard): <-13 dBm (Low Power)
Max gain uplink - 88-990 MHz: 20 dBm (Standard);  >20 dBm (Low Power)
Max gain uplink - 1000-2600 MHz: 10  dBm (Standard);  >10 dBm (Low Power)
Gain downlink: -13  dBm (Standard);  >20  dBm (Low Power)
Attenuation settings uplink and downlink: 0-30 (Standard);  dBm 0-30 (Low Power)

Isolation between ports: >60 dB
Isolation between uplink and downlink ports (unduplexed): >70 dB
BTS RF ports/Test ports: SMA F
Interconnecting ports: QMA F
Power Consumption: <15 W
Width/Height: Rack Units, 2/3 U
Temperature range operational: Non-condensing, 0-45°C



 Item# Description  Freq UL  Freq DL  Region 
DBI 312 VHF - Standard 136-174 136-174 American
DBI 313 UHF - Standard 450-470 450-470 American
DBI 307 LTE 700 Lower - Standard 698-716 728-746 American
DBI 304 LTE 700 Upper - Standard 777-756 746-756 American
DBI 314 PS700 - Standard 799-805 769-775 American
DBI 303 800 SMR IDEN - Standard 806-824 851-869 American
DBI 308 850 Cellular - Standard 824-849 869-894 American
DBI 319 PCS 1900 - Standard 1850-1915 1930-1995 American
DBI 321 AWS 2100 - Standard 1710-1755 2110-2155 American
DBI 326 LTE 2600 - Standard 2500-2570 2620-2690 American
DBI 412 VHF - Low Power 136-174 136-174 American
DBI 413 UHF - Low Power 450-470 450-470 American
DBI 407 LTE 700 Lower - Low Power 698-716 728-746 American
DBI 404 LTE 700 Upper - Low Power 777-756 746-756 American
DBI 414 PS700 - Low Power 799-805 769-775 American
DBI 403 800 SMR IDEN - Low Power 806-824 851-869 American
DBI 408 850 Cellular - Low Power 824-849 869-894 American
DBI 419 PCS 1900 - Low Power 1850-1915 1930-1995 American
DBI 421 AWS 2100 - Low Power 1710-1755 2110-2155 American
DBI 426 LTE 2600 - Low Power 2500-2570 2620-2690 American
DBI 305 DD 800 - Standard 832-862 791-821 European
DBI 310 GSM-R 900 - Standard 876-880 921-925 European
DBI309 E-GSM 900 - Standard 880-915 925-960 European
DBI 318 DCS 1800 - Standard 1710-1785 1805-1880 European
DBI 320 UMTS 210 - Standard 1920-1980 2110-2170 European
DBI 326 LTS 2600 - Standard 2500-2570 2620-2690 European
DBI 405 DD 800 - Low Power 832-862 791-821 European
DBI 409 E-GSM 900 - Low Power 880-915 925-960 European
DBI 418 DCS 1800 - Low Power 1710-1785 1805-1880 European
DBI 420 UMTS 210 - Low Power 1920-1980 2110-2170 European
DBI 426 LTS 2600 - Low Power 2500-2570 2620-2690 European


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product specifications:

Item NoBIU
Item NameBase Station Interface

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