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Overview
Westell’s Twin Variable Gain AWS Full Band Tower Mounted Amplifier (TMA) with an AISG connector is an ideal solution for optimizing LTE cell site performance by improving base station receiver sensitivity. With the TTMAV-AWS, operators will see fewer failed connection attempts, fewer context drops, expanded coverage area (critical for VoLTE), and increased uplink data throughput; all in a ultra-compact, highly-reliable, and cost-effective package that supports one full sector. To support all types of deployment environments, the gain of the TTMAV-AWS can be set in 1 dB increments from 3 dB to 13 dB using AISG 2.0. The AISG connector on the bottom of the unit allow operators to control RET antennas via a jumper cable from the TMA to the antenna, thus improving reliability and reducing cabling costs.
TTMAV-AWS Tower Mounted AmplifierTwin Variable Gain AWS Full Band TMA with AISG Connector
1409IARA
• Advanced, balanced LNA design
◦ Variable Gain 3-13 dB with 1 dB granularity
◦ Automatic LNA bypass ensures network availability
• Superior performance, with one of the lowest noise figures in the industry
◦ 1.15 dB at 13 dB gain
• High receive isolation
◦ Greater than 90 dB
• Supports full 45 MHz AWS frequency band for both receive and transmit
• Supports both AISG 2.0 and Current Window Alarming (CWA)
◦ AISG connector for RET control
◦ Includes AISG 2.0 software download
• Twin configuration supports one full sector in a single, ultra-compact enclosure
• Highly-reliable design with MTBF of over 2.5 million hours
Product Highlights
Block Diagram
BTSANTENNA
Tx BPFBias‐T
Control, Bias & Alarm Electronics
Ligh
tnin
gP
rote
ctio
n
AISGCONNECTOR
Pre‐
LNARX BPF
Post‐
LNARX BPF
BTSANTENNA
Tx BPFBias‐T
Control, Bias & Alarm Electronics
Ligh
tnin
gP
rote
ctio
n
Post‐LNA
RX BPFPre‐LNA
RX BPF
Front Sub‐Unit Back Sub‐Unit
RF Bypass & switches RF Bypass & switches
Balanced, variable gain,low‐noise amplifier
Balanced, variable gain,low‐noise amplifier
Product SpecificationsTTMAV-AWS Twin Variable Gain AWS Full Band TMA with AISG Connector
1409IARA
Ordering Information
Part Number DescriptionA90-TTMAV-AWS Dual duplex, twin, full band AWS TMA
with AISG 2.0 controlled variable gain and an AISG connector
All values are typical. All specifications are subject to change without notice.
Tx (per RF path)Frequency Band 2110-2155 MHzInsertion Loss 0.35 dBReturn Loss > 18 dBPower Handling (CW / PIP) 500 W / 5 kWPassive Intermodulation -115 dBmTotal Group Delay (max.) 16 nSecElectrical (per RF path)Power Consumption 180 mA @ 12 VDC
Surge Protection: DC path 8/20 us 10 kA pulse arrester 75 V, and 1.5 kW TVS 33 V
Lightning Protection Internal shorted stubsReverse DC Voltage Protection -30 VDCCommunication and Control
Protocol / Alarms Automatic Detection - AISG 2.0 or Current Window Alarm
AISG Connector AISG 8-pin IEC 60130-9 Female
MechanicalSize, approx. (H x W x D) 5.0” x 6.7” x 6.6”Weight 14.5 lbsColor Off-whiteConnectors: RF Long Neck 7/16 DIN Female
Mounting Pedestal, Pole, Wall; Mount-ing bracket provided
Weather Rating (IEC 60529) IP67Temperature Range -40°C to +65°C
®Inside Sales / Support:800.377.8766
www.westell.com
Westell is a registered trademark of Westell, Inc. Availability of features and specifications subject to change without notice. This document is the property of Westell, Inc. and its contents are proprietary and may neither be copied, reproduced nor its contents disclosed to others without prior written agreement from Westell.
Westell Technologies750 N. Commons DriveAurora, IL 60504
Copyright 2014 Westell, Inc. All rights reserved.
Rx (per RF path)Frequency 1710-1755 MHz
Noise Figure
@Gain (dB) NF13 1.1512 1.1911 1.2510 1.319 1.408 1.507 1.626 1.775 1.964 2.183 2.44
Return Loss (active mode) > 18 dBReturn Loss (bypass mode) > 16 dBOutput 3rd Order Intercept Point +27 dBmBypass Insertion Loss 1.2 dBTotal Group Delay (max.) 42 nSec
5.00" 8.06"
Front View Side View
7.00" 6.65"
Bottom View6.57"
All values are typical. All specifications are subject to change without notice.