Polyphaser Coax Protectors
3GPP/AISG Coaxial Protectors
DAS-BT, DAS-HY, DAS-TP
Customizable 3GPP /AISG compatible coaxial
interface series designed for tower top equipment and 3G system site
optimization. These devices also allow for greater flexibility in DAS
The Antenna Interface Standards Group, known
as AISG, is a group of over 60 companies dedicated to creating an open
specification for the interoperable control interface of 3G towermounted and
remotely controlled devices. Many of the newer 3G system rollouts require the
use of antenna line products such as remote electrical tilt antennas (RETA),
tunable multi-carrier amplifiers, power boosters, and low noise amplifiers.
AISG releases are coordinated with 3GPP technical working groups.
Distributed Antenna Systems, or DAS for
short, is an antenna system that is used to optimize coverage where the
existing standard cellular architecture is inadequate and/or traffic density
is irregular. Typical applications for DAS would be in-building
communications, tunnels, airports, or underground facilities.
DAS systems are often designed to optimize
coverage where traffic patterns change several times during a day. For
example, RETA’s are usually employed to change the antenna beam direction
for more efficient signal coverage. The change of the system can be done from
the network operations center, or at the BTS. It is accomplished through an
electrical system that is defined by the AISG/3GPP standard
The DAS-BT is a DC pass AISG compliant coaxial
protector for sites that use Remote Electrical Tilt Antenna (RETA). The DAS-BT
passes the ASG telemetry frequency. Please see the product print for more
information on the connector configuration, frequency range, and user voltage
The DAS-HY Series is a customized 3GPP/AISG
compatible coaxial interface designed for tower top and base equipment. The
DAS operates in the frequency range of 700 – 2700MHz. The Series can pass
2-25MHz telemetry and DC voltages of +12 and +24Vdc. Typical parameters
include maximum 1.1:1 VSWR and 0.1dB Insertion Losses.
The DAS-TP Series is compliant for AISG circular 8
pin connectors at tower top and base station. This Series will pass +12Vdc,
+24Vdc, and RS485 baud rates of 9600, 38.4K, and 115.2K bps.
(Click on the links below in this
section for printable full product drawing and specifications)