System Description NOTCHCELL Repeater 2 Repeater Design 2.1 System specification 2.1.1 Environmental conditions Item Standard Power supply Remark AC110V± 20%, 50/60Hz± 5% or +24Vdc battery backup available - 40 ~ +55 ℃ - 40 ~ +70 ℃ 95 % 400 W(Normal), 1200W(Max. In case of the Heater acts at lower temperature) 100 mm/Hr NEMA 4x 60m/s
Environmental Conditions Operating temperature Storage temperature Humidity Consumption power Rainfall Water proof Wind pressure 2.1.2 System features A.System Description NOTCHCELL Repeater B. NOTCHCELL Antenna SPEC Item Donor ANT Remark Service ANT 1850 ～1910 MHz, 1930 ~ 1990 MHz 60MHz, 60MHz Frequency Range Band Width 1:1.5 이하 1:1.5 이하 17 dBd ± 1 dB 17 dBd ± 1 dB Half-Beam width (H) 20˚ ± 3˚ 45˚ ± 5˚ Half-Beam width (V) 20˚ ± 3˚ 8˚ ± 2˚ ≥ 45 dB ≥ 13 dB ≥ 45 dB ≥ 13 dB (Upper) V.S.W.R Gain Front-to-back ratio First-to-side ratio Impedance Polarization ≥ 100 dB ANT Distance (Horizontal) ≥1.
System Description NOTCHCELL Repeater 3 Repeater Configurations The repeater system consists largely of the Main Box and PSU Box. The main modules or units of repeater are as follows: DPX (Duplexer), MC PA (Multi Carrier Power Amplifier unit), ARCU (Advanced Repeater Control Unit board), ARIU (Advance Repeater Control Unit board), UDC (Up-Down Converter unit, with LNA), Arrestor, PSU (Power Supply Unit), Heater Module, EMI/EMC Filter. 3.1 Main Box The following is the picture of Main Box.
System Description NOTCHCELL Repeater 3.2 PSU Box Heat Module EMI/EMC EMI/EMC PSU Figure 2 PSU Box 3.3 Sub Unit Overview Functionally, repeaters are built up with several sub units. The sub units of main repeater are as follows: Band selective repeaters can handle multi-carriers over a wide band. The bandwidth is adjustable. A band selective repeater requires two UDC (with LNA) units and two PA units in the repeater.
System Description NOTCHCELL Repeater UDC converts (Down) a signal received from LNA and gets rid of signal which is out of the bandwidth range, then converts (Up) again into the original frequency range and controls ‘Path Gain’. 3.3.2 MCPA (Multi Carrier Power Amplifier unit) Figure 5 MCPA -UL Figure 6 MCPA -DL CDMA repeaters can be equipped with two MCPA that boosts the output gain with typically 35~40dB.
System Description NOTCHCELL Repeater 3.3.3 ARCU (Advanced Repeater Control Unit board) Figure 7 ARCU The ARCU board is the control unit of the repeater. The ARCU board is used to supervise and control operational parameters such as gain control, ALC handling, etc. The ARCU takes care of alarms and the event log, password and logon, and many other procedures. 3.3.4 DPX (Duplexer) Figure 8 DPX-BS Figure 9 DPX-MS The Duplexers are located in the lower part of the repeater cabinet.
System Description NOTCHCELL Repeater 3.3.5 PSU (Power Supply Unit) Figure 10 PSU PSU receives AC 110V (Voltage) from outside and provides DC Power to each unit. In case AC Power shuts down, PSU supplies power to each unit using battery box (+24v) which is connected to ‘BATT IN’ locating under main repeater body. In case AC power is restored, the battery, connected to outside, is converted into being charge with electricity automatically. (Battery Box is optional) 3.3.
System Description NOTCHCELL Repeater 3.3.7 ARIU (Advance Repeater Interface Unit board) Figure 12 ARIU BTS sends the alarms of Notch repeater and the operator can check and control. 3.3.8 Arrestor Figure 13 Arrestor Arrester uses a semiconductor varistor to protect equipment from lightning. 3.3.9 EMI/EMC Filter Figure 14 EMI/EMC Filter It use to prevent the noise ingredient is radiated with the spurious to happen to the outside in the repeater.
System Description NOTCHCELL Repeater 4 Block Diagram The main signal paths are described in general in the next section and detailed under each block diagram. 4.1 Downlink signal path The downlink signal path, i.e. from the base station through the repeater to the mobile station, is described for NOTCHCELL repeater under the block diagrams on the following pages. 4.2 Uplink signal path The uplink signal path, i.e.
System Description NOTCHCELL Repeater 4.4 Repeater Setup The repeater parameters can be set locally by means of a desktop or notebook running OMT. The PC is connected to the ARCU via the RS-232 PC port. * Option (Bluetooth Adapter): When it is used, it enables wireless integration 5 Board and Unit Descriptions 5.
System Description NOTCHCELL Repeater 3: VSWR Alarm 5: Over Temp 6: PA On/Off 7: Cable Open Fail: High 8: Transmit Power Monitor 9: Reflect Power Monitor Mute Function 5V⇒ Off, 0V⇒On Power Detector 0.1 ~ 5V Voltage DC 27V RF connector Type-SMA, female 5.2 PA for uplink Figure 17 Block diagram of Power Amplifier unit for uplink PA (Power Amplifier) amplifies RF signal received from UDC (Downlink) up to 40dB and its Maximum RF input is 27dBm in terms of CDMA SFA standards.
System Description I/O Port NOTCHCELL Repeater 1: GND 2: Over Power Alarm Normal: Low 3: VSWR Alarm 5: Over Temp Fail: High 6: PA On/Off 7: Cable Open 8: Transmit Power Monitor 9: Reflect Power Monitor Mute Function 5V⇒ Off, 0V⇒On Power Detector 0.1 ~ 5V Voltage DC 27V RF connector Type-SMA, female 5.
System Description NOTCHCELL Repeater Up Converter Up Converter consists of Mixer, AMP, BPF, Digital Atten, Analog Atten and RF level detector. Mixer is used to convert IF (70 MHz) to Down Link Path RF Frequency. BPF is to remove signal out of service range. Digital Atten operates connected to controller to control Path Gain. LNA Figure 19 Block diagram of Low Noise Amplifier unit for downlink. This product is a low noise amplifier used for NOTCHCELL downlink.
System Description NOTCHCELL Repeater 5.4 UDC for uplink Figure 20 Block diagram of Up-Down converter unit for uplink The above product is Down Converter for Uplink and it is composed of three parts (Down Converter, IF and Up Converter) Down Converter Down Converter consists of RF level detector, BPF, Digital Atten, AMP and Analog Atten, Mixer. RF level detector converts RF signal into DC, which is able to detect signal level.
System Description NOTCHCELL Repeater Figure 21 Block diagram of Low Noise Amplifier unit for downlink. This product is a low noise amplifier used for NOTCHCELL downlink. It is generally composed of RF block and Fault block (Alarm circuit). RF block has approximately 30dB gain at CDMA1900 through 3-stage amplification, and its noise index is 0.9dB. Fault block is a circuit that detects current flowing in each TR of RF block. Fault circuit detects current flowing in 1st stage TR and 2nd & 3rd stage TRs.
System Description NOTCHCELL Repeater 5.5 ARCU Figure 22 Block diagram of ARCU The ARCU board is the central board in the repeater, located in the repeater cabinet. The ARCU board contains a microprocessor, main memory, flash memory for the ARCU software, NVRAM memory for parameters and the event log , ports for local and remote communication, battery powered real-time clock, etc. The ARCU board is used to supervise and control operational parameters such as gain control, ALC handling, etc.
System Description NOTCHCELL Repeater J11 On the PSU board J12 RS-232 (Local OMT) on the bottom of repeater J13 Consol for microprocessor. J16 LAN for microprocessor J21 Not used 5.6 ARIU Figure 23 Block diagram of ARIU ARIU Module does to do WNMS interconnection function through ARCU and Wireless Modem (Expedite C201). Specification Item Specification Power Requirements DC 4.2V, DC3.
System Description NOTCHCELL Repeater 5.7 DPX Figure 24 Block diagram of DPX The Duplexers are located in the lower part of the repeater cabinet. MS and BS duplexers are identical.
System Description Separation between NOTCHCELL Repeater DL/UL 100dB frequency RF connector Type-SMA, female Coupling value Coupling: 20dB, 30dB, 40dB± 2dB, Monitoring: 30dB± 2dB VSWR 1:1.
System Description NOTCHCELL Repeater 5.8 Arrestor Figure 25 Block diagram of Arrestor Arrester uses a semiconductor varistor to protect equipment from lightning Specification Item Specification Frequency 1800MHz~2000MHz Bandwidth 200MHz Insertion loss 0.2dB VSWR 1:1.2 Surge current 1.2 x 50㎲ , 6 kV / 3 kA RF connector Type-N, female Remarks 5.9 PSU Figure 26 Block diagram of PSU PSU receives and converts input power (AC 110V) into DC +27V or +12V.
System Description NOTCHCELL Repeater storage battery is lower than +21V (± 1.0V), battery input power is shut down to protect battery and it is how to Prevent the storage batter from the over-discharge. The output power, as converting into AC_IN/Battery of Battery/AC_IN, operates in a proper way and supply the stable power until the over-discharge function works.
System Description NOTCHCELL Repeater It should be as most as possible near with power input/output port, and Wires do so that to do not become overlap each other. Also, must do so that high frequency resistance may minimize in grounding paper as possible when do mounting to Repeater. When fix EMI/EMC Filter to metal case for this, after improving electricity conductibility removing coats of paint of contact part, do to ground in the nearest distance coming ground connection terminal.
System Description Heater Operating Temperature NOTCHCELL Repeater Act: Board temperature below +15℃± 5 Stem by: Board temperature Higher than +20℃ Heating Power 400watt Size 285 × 157 × 55 5.12 Connection Ports 5.12.1 Local OMT port ; Main Box PC port RS-232 is a LOCAL OMT port used for local PC communication. The connector is found to the bottom of the cabinet. LOCAL OMT is a 3-pole MS connector.
System Description NOTCHCELL Repeater 5.12.3 AC IN ; PSU Box MS22-2, Male A PE B L C N 5.12.4 DC IN 24V ; PSU Box *Use at DC power (or Battery) connection necessity by Backup in case of is shut off AC.
System Description NOTCHCELL Repeater NOTCHCELL Repeater System Description Copyright © 2004 R-TRON, Inc. All Rights Reserved Copyright of this manual belongs to R-TRON, Inc. Reproduction, distribution or revision of part or all of contents in this manual in any form without written permission of R-TRON, Inc. is prohibited. The information in this manual is subject to change for the reason of function improvement, design alteration, etc. without any prior notification.
