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Wcdma Rf Repeater Rfr Is Designed To Improve Signal Coverage And Telecommunication Quality
Posted at: Offers to Sell and Export
Posted on: Fri 15 Aug, 2008 4:22 am
The WCDMA RF Repeater (RFR) is designed to provide a more cost-effective solution than adding a new Base Transceiver Station (BTS) to improve signal coverage and communication quality in WCDMA system. And its easy installation and maintenance can help carriers get fast return.
The repeater is working as a relay between the BTS and mobiles. It receives the low-power signal from BTS via the Donor Antenna, linearly amplifies the signal and then retransmits it via the Coverage Antenna to the weak/blind coverage area. And the mobile signal is also amplified and retransmitted to the BTS via the opposite direction.
As per operator’s requirement for working frequency, two types of RFR are available:
Band Selective RF Repeater: to amplify all signals in the whole band (bandwidth is customized)
Channel Selective RF Repeater: to amplify only the signals transmitted by the customized 1 to 2 channels (a narrow band with customized central frequency)
Features:
Aluminum-alloy casing with IP65 protection has high resistance to dust, water and corroding
Highly selective channel selector can process 2 channels simultaneously
No interference to BTS by adopting linear amplifier with high gain and low noise
Adopting filter with highly selectivity and low insertion loss eliminates interference between uplink and downlink
RS-232 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 WCDMA signal is weak or unavailable.
Outdoor: Airports, tourism regions, golf courses, tunnels, factories, mining districts, villages, …
Indoor: Hotels, exhibition centers, basements, shopping malls, offices, parking lots, …
Technical Specification:
Items Downlink Uplink
Working Frequency (customized) 2110 ~ 2170 MHz 1920 ~ 1980 MHz
Carrier Wave Mode Channel Selective / Band Selective
Carrier Quantity 1~2 channels
Auto Gain Control (AGC) Support
Max. Output Power 27/30/33/37/40 dBm (+0dB/-2dB) 27/30 dBm (+0dB/-2dB)
Frequency Error ≤ 0.01ppm
Adjacent Channel Power Ratio (ACPR) P ≥ 31 dBm (Offset 5MHz) ≤ 49dBc
P ≥ 31 dBm (Offset 10MHz) ≤ 54dBc
P < 31 dBm (Offset 5MHz) ≤ 50dBc
P <31 dBm (Offset 10MHz) ≤ 55dBc
Gain 85 ± 3dB
Noise Figure ≤ 4dB ≤ 4dB
In-band Ripple ≤ 3dB p-p / 3.84 MHz
Spurious Emission and IMD3 Comply with 3GPP TS 25.106 V6.0.0
System Delay ≤ 5.0μSec
Voltage Standing Wave Ratio ≤ 1.4
Error Vector Magnitude (EVM) ≤ 12.5%
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
Peak Code Domain Error (PCDE) ≤ -35dB
I/O Impedance 50Ω
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 (customized) DC +24V / AC 220V±15%, 50Hz / AC 110V
Backup Power Supply (optional) 4 hours
Dimensions 630mm X 400mm X 230mm
Weight 35kg
NMS Monitoring Function Real-time alarm for door status, temperature, power supply, etc.
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