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BWC-TMA-700C-VG Tower Mounted Amplifier
®
Variable Gain 700 MHz Upper-C TMA with AISG Connector
Overview
Westell’s Variable Gain 700 MHz Upper-C 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
BWC-TMA-700C-VG, operators will see fewer failed
connection attempts, fewer context drops, expanded
coverage area (critical for VoLTE), and increased uplink
data throughput; all in a compact, highly-reliable, and
cost-effective package. To support all types of deployment
environments the gain of the BWC-TMA-700C-VG 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 allows
operators to control RET antennas via a jumper cable
from the TMA to the antenna, thus improving reliability
and reducing cabling costs.
Product Highlights
Block Diagram
Control, Bias & Alarm Electronics
Balanced, variable gain,
low‐noise amplifier
Lightning
Protection
• Advanced, balanced LNA design
◦◦ Variable Gain 3-13 dB with 1 dB granularity
Post‐
LNA
RX BPF
Pre‐
LNA
RX BPF
◦◦ Automatic LNA bypass ensures network
availability
• Superior performance, with one of the lowest
noise figures in the industry
◦◦ Less than 1.4 dB at 13 dB gain
RF Bypass & switches
• High receive isolation
◦◦ Greater than 90 dB
Tx BPF
ANTENNA
AISG
CONNECTOR
Bias‐T
• High adjacent channel rejection > 55 dB
• Supports full 11 MHz of the 700 MHz Upper-C
frequency for both receive and transmit
BTS
• Supports both AISG 2.0 and Current Window
Alarming (CWA)
◦◦ AISG connector for RET control
• Highly-reliable design with MTBF of over 2.5
million hours
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BWC-TMA-700C-VG Variable Gain 700 MHz Upper-C TMA with AISG Connector
Product Specifications
Rx
Tx
Frequency
Noise Figure
Return Loss (active mode)
Return Loss (bypass mode)
Output 3rd Order Intercept Point
Bypass Insertion Loss (typical)
Total Group Delay (max.)
776-787 MHz
@Gain (dB)
13
12
11
10
9
8
7
6
5
4
3
> 18 dB
> 16 dB
+27 dBm
1.3 dB
330 nSec
NF (typ)
1.35
1.39
1.44
1.51
1.58
1.68
1.80
1.95
2.12
2.32
2.59
Ordering Information
Part Number
Description
BWC-TMA-700C-VG
Dual duplex, 700 MHz Upper-C block
TMA with AISG controlled variable gain
and an AISG connector
Front View
Frequency Band
Insertion Loss
Return Loss
Power Handling (CW / PIP)
Passive Intermodulation
Total Group Delay (max.)
746-757 MHz
0.35 dB
> 18 dB
500 W / 5 kW
-110 dBm
70 nSec
Electrical
Power Consumption
Surge Protection: DC path
Reverse DC Voltage Protection
Lightning Protection
180 mA @ 12 VDC
8/20 us 10 kA pulse arrester 75
V, and 1.5 kW TVS 33 V
-30 VDC
Internal shorted stubs
Communication and Control
Automatic Detection - AISG 2.0
or Current Window Alarm
AISG 8-pin IEC 60130-9 Female
Protocol / Alarms
AISG Connector
Mechanical
Size (H x W x D)
Weight
Color
Connectors: RF
Mounting
Temperature Range
Weather Rating (IEC 60529)
9” x 6.7” x 4.4”
14 lbs
Off-white
Long Neck 7/16 DIN Female
Pedestal, Pole, Wall; Mounting
bracket provided
-40°C to +65°C
IP67
All values are typical. All specifications are subject to change without notice.
Side View
4.44"
Bottom View
8.97"
12.29"
6.65"
4.86"
www.westell.com
®
Inside Sales / Support:
800.377.8766
Westell Technologies
750 N. Commons Drive
Aurora, IL 60504
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.
Copyright 2014 Westell, Inc. All rights reserved.
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