Product category:
Circuit Protection Devices
News Release from: Smiths Interconnect - Polyphaser | Subject: GX series
Edited by the Electronicstalk Editorial
Team on 03 July 2003
Protection for tower-mounted amplifiers
The GX series of broadband surge protectors enable the operating voltage of a 3G basestation tower mounted amplifiers to pass, while blocking lightning surges of up to 20kA.
3G basestations frequently use tower mounted amplifiers (TMAs) to improve cell coverage, and protecting the sensitive inputs to these devices against lightning surges has been a common problem, due to the voltage needed to power the amplifier generally being fed through the antenna coax with the signal The GX series of broadband surge protectors enable the operating voltage of the TMA (6, 15, 24, 36, 48 or 60V DC) to pass, while blocking lightning surges of up to 20kA (8/20us waveform)
This article was originally published on Electronicstalk on 21 Dec 2004 at 8.00am (UK)
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Amps and antennas gain multiple-strike protection
The GX series from PolyPhaser provides multistrike lightning protection for sensitive tower mounted amplifiers, tower top amplifiers and active antenna systems, where DC voltage is required.
The protectors are designed for the frequency bands of 400 to 1200MHz or 800 to 2500MHz.
A remarkably low let-through energy of 125uJ at 6V DC (typically) ensures that TMAs are well protected against multiple strikes.
GX series coaxial protectors take full advantage of DC blocking on the RF path while isolating and protecting/conditioning the DC circuitry.
The DC component supplied through the protector to tower mounted electronics is decoupled from the RF path, passes through a DC protection circuit and is recoupled to the coaxial cable centre conductor.
This innovative design combines RF and DC protection functions in a single unit.
The easily fitted, weatherproof GX protector has various connector configuration options, together with bias-T functionality where required.
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