Fiber Optic Repeater

MODEL:
ATGC00A/ATBG43A (GSM850/GSM900MHz) /
ATDC00A/ATDB43A (DCS1800MHz/PCS1900MHz) /
ATWC00A/ATWB43A (WCDMA2100MHz)
AT7C00A/AT7B43A (TETRA400MHz) /
ATCC00A/ATCB43A (CDMA450/800/1900MHz)

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Fiber Optic Repeater

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The Fiber Optic Repeater (FOR) is designed to solve problems of weak mobile signal in such place: far away from the BTS (Base Transceiver Station) and has fiber optic cable network underground.

The whole FOR system consists of two parts: Donor Unit and Remote Unit. They transparently convey and amplify the wireless signal between the BTS (Base Transceiver Station) and mobiles via fiber optic cables.

The Donor unit captures the BTS signal via a direct coupler closed to the BTS, then converts it into optic signal and transmits the amplified signal to the Remote Unit via fiber optic cables. The Remote Unit will reconvert the optic signal into RF signal and provide the signal to the areas where network coverage is inadequate. And the mobile signal is also amplified and retransmitted to the BTS via the opposite direction.

Application Diagram of Fiber Optic Repeater

Application Diagram of Fiber Optic Repeater

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Features

Application

Specifications

Features

  • Aluminum-alloy casing with IP65 protection has high resistance to dust, water and corroding;
  • Omni-directional coverage antenna can be adopted to expand more coverage;
  • Tx/Rx control and alarm messages can be transmitted via one fiber optic cable;
  • Adopting WDM (Wavelength Division Multiplexing) module to realize long-distance transmission;
  • Stable and improved signal transmission quality;
  • One Donor Unit can support up to 4 Remote Units to maximize utilization of fiber optic cable;
  • USB port provides a link to a notebook for local supervision or to the built-in wireless modem to communicate with the NMS (Network Management System) that can remotely supervise repeater’s working status and download operational parameters to the repeater.

Application

To expand signal coverage or fill signal blind area where signal is weak or unavailable.

  • Outdoor: Airports, tourism regions, golf courses, tunnels, factories, mining districts, villages, highways…
  • Indoor: Hotels, exhibition centers, basements, shopping malls, offices, parking lots, …

The FOR is mainly applicable to such case:

  • Underground fiber optic cable network already exists beneath the area to be covered;
  • There is huge obstructive terrain between the BTS and the area to be covered;
  • The distance between the BTS and the area to be covered is less than 20 km.

In comparison with RFR (RF repeater) and FSR (frequency shift repeater), the FOR has the following benefits and disadvantages:

Pro Con
  • No more self-oscillation and easy to choose installation location;
  • For Cable-Access type, pure BTS signal picked up by the Donor Unit will greatly reduce the signal noise;
  • The Remote Unit can be installed out of the BTS coverage;
  • A full 360-degree coverage can be realized;
  • No need to occupy frequency resource as the link frequency.
  • The total cost of equipment is higher;
  • A fiber optical connection between the Donor Unit and Remote Unit is required.

Specifications of GSM850 / GSM900 / DCS1800 / PCS1900 / TETRA400 Fiber Optic Repeater

Donor Unit Remote Unit
Working Frequency (customizable) Uplink (MHz) 824~849 / 880~915 / 1710~1785 / 1850~1910 / 380~385
Downlink (MHz) 869~894 / 925~960 / 1805~1880 / 1930~1990 / 390~395
Transmission Distance ≤ 20km
Max. Input Level (Non-Destructive) -10dBm
Max. Output Power (customizable) 43 dBm (20 W)
Max. Gain Cable-access: ≥ 65dB / Wireless-access: ≥ 85dB
Gain Adjustment Range 1~31dB @ step of 1dB
Voltage Standing Wave Ratio (VSWR) < 1.5
Noise Figure ≤ 5dB (only for uplink)
In-Band Ripple ≤ 3dB p-p
Spurious Emission Within working band ≤ -15dBm/30kHz
Out of working band
(Δf > 2.5MHz)
9kHz~1GHz: ≤ -36dBm/30kHz
1GHz~12.75GHz: ≤ -30dBm/30kHz
Third-Order Intermodulation ≤ -45dBc / 30kHz (measured under rated output power)
System Delay ≤ 5.0μSec
I/O Impedance 50Ω
Fiber Optic Light Source Laser unit (wavelength: 1310nm / 1550nm)
Optical Output Power ≥0dBm (1310nm) / ≥3dBm (1550nm)
Optical Receiver Sensitivity ≤ -25dBm
RF Connector N-Type (Female) / changeable / bottom of casing
Temperature Range Operation: -25°C ~ +55°C / Storage: -30°C ~ +60°C
Relative Humidity Range ≤ 95% (non condensing)
Power Supply (customizable) DC -48V / AC 220V, 50/60Hz / AC 110V, 50/60Hz
Power Consumption ≤ 15W ≤ 180W
Backup Power Supply (optional) 4 hours
Casing Level IP32 IP65
Dimensions 418mm X 90mm X 290mm 428mm X 328mm X 154mm
Weight 6kg 15kg
NMS Monitoring Function (optional)
  • Real-time alarm for door status, temperature, power supply, LNA, VSWR, self-oscillation, etc.
  • Remote control such as turn on/off, increasing/decreasing output power, etc.
  • Real-time status for output/input power, UL/DL gain, all status of repeater etc.

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Specifications of WCDMA Fiber Optic Repeater (2100MHz)

Donor Unit Remote Unit
Working Frequency (customizable) Uplink (MHz) 1920~1980
Downlink (MHz) 2110~2170
Transmission Distance ≤ 20km
Max. Input Level (Non-Destructive) -10dBm
Max. Output Power (customizable) 43 dBm (20 W)
Max. Gain Cable-access: ≥ 65dB / Wireless-access: ≥ 85dB
Gain Adjustment Range 1~31dB @ step of 1dB
Voltage Standing Wave Ratio (VSWR) < 1.5
Adjacent Channel Power Ratio (ACPR) P ≥ 31 dBm (Offset 5MHz) ≥ 33dBc, (Offset 10MHz) ≥ 33dBc
P < 31 dBm (Offset 5MHz) ≥ 20dBc, (Offset 10MHz) ≥ 20dBc
Noise Figure ≤ 4dB
In-Band Ripple ≤ 3dB p-p
Peak Code Domain Error (PCDE) ≤ -35dB
Out-of-Band Gain 2.7 ≤ f_offset < 3.5 MHz ≤ 60dB
3.5 ≤ f_offset < 7.5 MHz ≤ 45dB
7.5 ≤ f_offset < 12.5 MHz ≤ 45dB
12.5 ≤ f_offset ≤ 30dB
Spurious Emission and IMD3 Comply with 3GPP TS 25.106 V6.0.0
System Delay ≤ 5.0μSec
Phase Distortion across bandwidth ≤ 6.1° (RMS) & ≤ 24.5°
Error Vector Magnitude (EVM) ≤ 12.5%
I/O Impedance 50Ω
Fiber Optic Light Source Laser unit (wavelength: 1310nm / 1550nm)
Optical Output Power ≥0dBm (1310nm) / ≥3dBm (1550nm)
Optical Receiver Sensitivity ≤ -25dBm
RF Connector N-Type (Female) / changeable / bottom of casing
Temperature Range Operation: -25°C ~ +55°C / Storage: -30°C ~ +60°C
Relative Humidity Range ≤ 95% (non condensing)
Power Supply (customizable) DC -48V / AC 220V, 50/60Hz / AC 110V, 50/60Hz
Power Consumption ≤ 15W ≤ 150W
Backup Power Supply (optional) 4 hours
Casing Level IP32 IP65
Dimensions 418mm X 90mm X 290mm 428mm X 328mm X 154mm
Weight 6kg 15kg
NMS Monitoring Function (optional)
  • Real-time alarm for door status, temperature, power supply, LNA, VSWR, self-oscillation, etc.
  • Remote control such as turn on/off, increasing/decreasing output power, etc.
  • Real-time status for output/input power, UL/DL gain, all status of repeater etc.

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Specifications of CDMA Fiber Optic Repeater (450MHz, 800MHz, 1900MHz)

Donor Unit Remote Unit
Working Frequency (customizable) Uplink (MHz) 450~457.5 / 824~849 / 1880~1890
Downlink (MHz) 460~467.5 / 869~894 / 1960~1970
Transmission Distance ≤ 20km
Max. Input Level (Non-Destructive) -10dBm
Max. Output Power (customizable) 43 dBm (20 W)
Max. Gain Cable-access: ≥ 65dB / Wireless-access: ≥ 85dB
Gain Adjustment Range 1~31dB @ step of 1dB
Voltage Standing Wave Ratio (VSWR) < 1.5
Noise Figure < 5dB (only for uplink)
In-Band Ripple ≤ 3dB p-p
Spurious Emission ≤ -36dBm
In-Band Intermodulation Attenuation ≤ -15dBm/30kHz
System Delay ≤ 5.0μSec
I/O Impedance 50Ω
Fiber Optic Light Source Laser unit (wavelength: 1310nm / 1550nm)
Optical Output Power ≥0dBm (1310nm) / ≥3dBm (1550nm)
Optical Receiver Sensitivity ≤ -25dBm
RF Connector N-Type (Female) / changeable / bottom of casing
Temperature Range Operation: -25°C ~ +55°C / Storage: -30°C ~ +60°C
Relative Humidity Range ≤ 95% (non condensing)
Power Supply (customizable) DC -48V / AC 220V, 50/60Hz / AC 110V, 50/60Hz
Power Consumption ≤ 15W ≤ 180W
Backup Power Supply (optional) 4 hours
Casing Level IP32 IP65
Dimensions 418mm X 90mm X 290mm 428mm X 328mm X 154mm
Weight 6kg 15kg
NMS Monitoring Function (optional)
  • Real-time alarm for door status, temperature, power supply, LNA, VSWR, self-oscillation, etc.
  • Remote control such as turn on/off, increasing/decreasing output power, etc.
  • Real-time status for output/input power, UL/DL gain, all status of repeater etc.

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