REPEATERS
Fiber Optic Repeater
MODEL:
RPT864 (GSM 900MHz) / RPT884 (GSM 1800MHz) / RPT894 (GSM 1900MHz)
RPT914 (CDMA 450MHz) / RPT934 (CDMA 800MHz) / RPT994 (CDMA 1900MHz)
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 (or via open air RF transmission through the Donor Antenna), 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.
As per the method of receiving BTS signal by the Donor Unit, two types of FOR are available:
- Cable-Access FOR: to receive BTS signal via a direct coupler closed to the BTS (recommended);
- Wireless-Access FOR: to receive BTS signal via a Donor Antenna (applicable when no fiber optic cable connecting to the BTS); can be sorted into 2 sub-categories: Band-Selective and Channel-Selective.
In comparison with RFR (RF repeater) and FSR (frequency shift repeater), the FOR has the following benefits and disadvantages:
| Pro | Con |
|---|---|
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Related Links
Features
Application
Specifications
Features
- Aluminum-alloy casing has high resistance to dust, water and corroding;
- Omni-directional coverage antenna can be adopted to expand more coverage;
- Adopting WDM (Wavelength Division Multiplexing) module to realize long-distance transmission;
- Stable and improved signal transmission quality;
- One Donor Unit can support up to 8 Remote Units to maximize utilization of fiber optic cable;
- RS-232 ports provide links to a notebook for local supervision and 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 Range
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 20 km around.
Application Diagram
Application Diagram of Cable-Access Fiber Optic Repeater
Application Diagram of Wireless-Access Fiber Optic Repeater
Specifications of GSM Fiber Optic Repeater
| Donor Unit | Remote Unit | ||
|---|---|---|---|
| Working Frequency (customizable) | Uplink | 890~915MHz / 1710~1785MHz / 1895~1910MHz | |
| Downlink | 935~960MHz / 1805~1880MHz / 1975~1990MHz | ||
| Transmission Distance | ≤ 20km | ||
| Max. Input Level | +10dBm | -- | |
| Output Power (customizable) | 0 dBm | 27~43 dBm (0.5~20 W) | |
| Gain | ≥ 65dB | ||
| 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 | ≤ -40dBc/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) | ||
| Temperature Range | Operation: -25°C ~ +55°C / Storage: -30°C ~ +60°C | ||
| Relative Humidity Range | ≤ 95% (non condensing) | ||
| Power Supply (customizable) | DC +24V / DC -48V / AC 220V±15%, 50Hz / AC 110V±15%, 50Hz | ||
| Backup Power Supply (optional) | 4 hours | ||
| Casing Level | Cable-Access: -- Wireless-Access: IP65 |
Output power @27~30dBm: IP31 Output power @33~43dBm: IP65 |
|
| Dimensions | Cable-Access: 418mm X 90mm X 290mm Wireless-Access: 630mm X 400mm X 230mm |
Output power @27~30dBm: 385mm X 300mm X 130mm Output power @33~37dBm: 570mm X 325mm X 215mm Output power @37~43dBm: 630mm X 400mm X 230mm |
|
| Weight | Cable-Access: 6kg Wireless-Access: 35kg |
Output power @27~30dBm: 8kg Output power @33~37dBm: 27kg Output power @37~43dBm: 35kg |
|
| Remote Monitoring/Control via NMS | Supported | ||
| ALC (Automatic level control) | Supported | ||
Specifications of CDMA Fiber Optic Repeater
| Donor Unit | Remote Unit | ||
|---|---|---|---|
| Working Frequency (customizable) | Uplink | 450~457.5 MHz / 824~849MHz / 1880~1890MHz | |
| Downlink | 460~467.5 MHz / 869~894MHz / 1960~1970MHz | ||
| Transmission Distance | ≤ 20km | ||
| Max. Input Level | +10dBm | -- | |
| Output Power (customizable) | 0 dBm | 27~43 dBm (0.5~20 W) | |
| Gain | ≥ 65dB | ||
| 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) | ||
| Temperature Range | Operation: -25°C ~ +55°C / Storage: -30°C ~ +60°C | ||
| Relative Humidity Range | ≤ 95% (non condensing) | ||
| Power Supply (customizable) | DC +24V / DC -48V / AC 220V±15%, 50Hz / AC 110V±15%, 50Hz | ||
| Backup Power Supply (optional) | 4 hours | ||
| Casing Level | Cable-Access: -- Wireless-Access: IP65 |
Output power @27~30dBm: IP31 Output power @33~43dBm: IP65 |
|
| Dimensions | Cable-Access: 418mm X 90mm X 290mm Wireless-Access: 630mm X 400mm X 230mm |
Output power @27~30dBm: 385mm X 300mm X 130mm Output power @33~37dBm: 570mm X 325mm X 215mm Output power @37~43dBm: 630mm X 400mm X 230mm |
|
| Weight | Cable-Access: 6kg Wireless-Access: 35kg |
Output power @27~30dBm: 8kg Output power @33~37dBm: 27kg Output power @37~43dBm: 35kg |
|
| Remote Monitoring/Control via NMS | Supported | ||
| ALC (Automatic Level Control) | Supported | ||