Tower Mounted Amplifier
Small, lightweight, twin unit
Dual duplexed
High Linearity
Lightning protected
High reliability
Full Cellular (25 MHz) band
TMA contains two TMA’s in a single housing. Each TMA is fullband and fully duplexed. High linearity improves the uplink sensitivity and thereceive performance of base stations.The TMA supports CDMA, EDGE/GSM and UMTS BTS equipment.
It providesa convenient package for sites upgraded to dual or quad antennaconfigurations.
It provides a convenient package for sites using dualpolarization antennas.
The twin TMA package reduces tower loading,leasing, and installation costs. Unit count on the tower is cut in half. Anexcellent match for two branch receive diversity applications using dualpolarization antennas. The input and output connectors are located inline forease of installation in space constrained areas such as uni-pole structuresand stealth antennas.
Technical Description:
The TMA system consists of a twin outdoor tower mount unit with twoantenna inputs. TMA Gain is to be Customer Specified at time of order over arange from 8 dB to 16 dB. The tower mount unit is dual duplexed to separatethe low-power uplink signal from the high-power downlink signal at theantenna port, amplifies the low-level uplink signal using an ultra-low noiseamplifier (LNA), and recombines the two paths at the BTS port. The towermount units consist of six band-pass filters, four redundant low-noiseamplifiers, bypass failure circuitry, and bias tee’s which are all housed in anIP65 moisture proof enclosure, with IP68 Immersion proof connectors suitedto long-life masthead mounting. The unit provides protection againstlightning strikes via a multi-stage surge protection circuit.
DC power isprovided via the feeder cable from the BTS.An optional indoor power supply unit (PDU) is available to power up to sixtower mount units and to provide all the monitoring and alarm functions forthe system. The PDU is housed in a single (1U) 1.75” x 19” rack and containsdual redundant power supplies capable of being “hot swapped” that provide aregulated DC supply voltage on the RF coax for the tower mount amplifiers.
Dual duplexed
High Linearity
Lightning protected
High reliability
Full Cellular (25 MHz) band
TMA contains two TMA’s in a single housing. Each TMA is fullband and fully duplexed. High linearity improves the uplink sensitivity and thereceive performance of base stations.The TMA supports CDMA, EDGE/GSM and UMTS BTS equipment.
It providesa convenient package for sites upgraded to dual or quad antennaconfigurations.
It provides a convenient package for sites using dualpolarization antennas.
The twin TMA package reduces tower loading,leasing, and installation costs. Unit count on the tower is cut in half. Anexcellent match for two branch receive diversity applications using dualpolarization antennas. The input and output connectors are located inline forease of installation in space constrained areas such as uni-pole structuresand stealth antennas.
Technical Description:
The TMA system consists of a twin outdoor tower mount unit with twoantenna inputs. TMA Gain is to be Customer Specified at time of order over arange from 8 dB to 16 dB. The tower mount unit is dual duplexed to separatethe low-power uplink signal from the high-power downlink signal at theantenna port, amplifies the low-level uplink signal using an ultra-low noiseamplifier (LNA), and recombines the two paths at the BTS port. The towermount units consist of six band-pass filters, four redundant low-noiseamplifiers, bypass failure circuitry, and bias tee’s which are all housed in anIP65 moisture proof enclosure, with IP68 Immersion proof connectors suitedto long-life masthead mounting. The unit provides protection againstlightning strikes via a multi-stage surge protection circuit.
DC power isprovided via the feeder cable from the BTS.An optional indoor power supply unit (PDU) is available to power up to sixtower mount units and to provide all the monitoring and alarm functions forthe system. The PDU is housed in a single (1U) 1.75” x 19” rack and containsdual redundant power supplies capable of being “hot swapped” that provide aregulated DC supply voltage on the RF coax for the tower mount amplifiers.
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