Introduction of 20dBm RF Repeater

June . 2012

1. Overview

2. Specification

3. Block Diagram

4. Major Function

5. Coverage Simulation

6. Installation Procedure

7. GUI User Guide

8. NMS User Guide

DBR1800/850/20dB repeater is used to cover shadow area of small building and shopping center ( under 1,000m2 Area)

1. Overview

- GSM/WCDMA dual band Repeater- Remote Control Function- Alarm Report Function- Local GUI function- Auto-shutdown Function- Auto Gain Control

Major Features

System Configuration-. RF module : LNA,AMP,Mixer, Filter etc. -. PSU : Output +6V / 7A-. MCU B’d : Status LED, USB Port, GSM Modem Temperature sensor etc.

In/Out port : FWD/RVS ANT, CPL(-30dB), AC

<Front Side> <Back Side>

2. Specification

Parameter Value Remarks

Frequency Range

Down Link 1817.5 ~ 1842.9MHzGSM1800

Up Link 1722.5 ~ 1747.9MHzDown Link 884 ~ 894MHz WCDMA850Up Link 839 ~ 849MHz

Selectivity 3dB Bandwidth 25.4 0.4 MHz GSM1800

Output Power/ TotalDown Link >= +20dBm @ Total 0.1 Watts

Up Link >= +20dBm @ Total 0.1 Watts

Gain

Range 45 ~ 75dB 　 　 GSM1800WCDMA850

Adjustable Range 30dB 　

Adjustment Step 1dB 　

Adjustment Accuracy <= 0.7dB 　

Out of Band Gain

400kHz 50dBGSM1800 600kHz 40dB

1MHz 35dB 5MHz 25dB

2.7≤foffset<3.5 MHz 60dB

WCDMA8503.5≤foffset<7.5 MHz 45dB7.5≤foffset<12.5 MHz 45dB

12.5≤foffset 35dBALC Range

(Automatic Level Control) 　 30dB

Passband Ripple 　<= 3dB p-p GSM1800<= 2dB p-p WCDMA850

2. Specification Input Power Level / Total 　 -25dBm ~ -55dBm GSM1800

WCDMA850Noise Figure 　 <= 6dBGroup Delay 　 <= 5sec 　

Intermodulation Distortion (IMD)9KHz~1GHz -36dBm

GSM18001GHz~12.75GHz -30dBm

Spurious Emission 9KHz~1GHz -36dBm

GSM18001GHz~12.75GHz -30dBm

Spurious Emission

In Band-21.5dBm/30KHz ±2.5MHz

WCDMA850

-33.5dBm/30KHz ±3.5MHz-20.5dBm/1MHz ±4.0MHz

Out Band

9KHz ~ 150KHz -13dBm/1KHz150KHz ~ 30MHz -13dBm/10KHz30MHz ~ 1GHz -13dBm/100KHz

1GHz ~ 12.75GHz -13dBm/1MHz

Shut DownDown Link >= +22dBm

Up Link >= +22dBm

Output Power Monitor 30 ± 1dB GSM1800 / WCDMA850

Impedance 　 50 ohmsVSWR 　 <= 1.5 :1

Wave Form Quality > 0.96 GSM1800EVM <= 12.5% WCDMA850PCDE <= -35dB WCDMA850

ACRR ±5MHz 20dBc WCDMA850±10MHz 20dBc WCDMA850

ACLR ±5MHz 45dBc WCDMA850±10MHz 50dBc WCDMA850

Remote MonitoringModule Built-in

SIM Card(Data Enabled) Yes

2. Specification

Local Access & Monitoring

USB Yes MINI_USB

Power_LED GREEN

Status_LED 2Color_Led GSM18002Color_Led WCDMA850

Control Function

PA Enable YesGain Yes

ALC Level YesShut Down Level Yes

Monitor FunctionPA Status Yes

Output Power YesGain Yes

Temperature YesOperating temperature -10 ~ 50℃

Power Supply 　 110/220VAC, 50~60HzBackup 　 1Hour Optional

RF In/Out Connector 　 N -Type Female 　Monitor Connector 　 SMA -Type Female

Local Access Connector 　 USB Female 　Power Input Connector 　 T.B.D. 　

Power Consumption 　 35W 　Dimension(WxHxD) 　 255 x 355 x 130 　 mm

Weight 　 < 6kg 　

Commissioning MaterialsSoftware Yes GUI

Test Cable YesManual Yes

Installation Materials Mounting Kit Yes Bolts

3. Block Diagram

Donor ANT.

N-TypeConnector

Service ANT.

DBR1800/850/20dB Blockdiagram

PSU+6.0V/7A AC 220V

N-TypeConnector

UL_CPL

Modem

DL_CPL

MCU (STM32F103RBT6)Control

GSM_Modem

850_Tx 850_Tx

LNA RF SAW

MIXER

774MHz_BTx Output

CPL

PAMRF SAW

850_Rx 850_Rx

Rx Output CPL

IF SAWV_PAD RF SAW

RF SAW

Thermistor AMP

774MHz_A

MIXER AMP IF SAW AMP AMPAGC_ATT

LNAAMP Thermistor

IsolatorAMPThermistorAMPV_PADThermistor

RF SAW

774MHz_C

MIXERAMPAMPThermistorMIXER

774MHz_D

Thermistor AMPRF

SAWAMPPAM

1800_Tx 1800_Tx

LNA RF SAW

MIXER

Tx Output CPL

PAMRF SAW

1800_Rx 1800_Rx

Rx Output CPL

IF SAWV_PAD RF SAW

RF SAW

Thermistor AMP

1665.2MHz_A

MIXER AMP IF SAW AMP AMPAGC_ATT

LNAAMP Thermistor

IsolatorAMPThermistorAMPV_PADThermistor

RF SAW

MIXERAMPAMPThermistorMIXERThermistor AMPRF

SAWAMPPAM

1665.2MHz_B

1665.2MHz_C1665.2MHz_D

Isolator

Isolator

GSM Modem( Remote Control Function)

H/W Temp Compensation

4. Major Function

• Adjust Max gain level to make Downlink Output level is not over +20dBm ±1dB, Control MAX Gain value 45 ~ 75dB.

Auto Level Control

FWD_Output Power

ALC ON/OFF

ON

OFF

ALC setting Level < FWD Output Power

ATT

YES

ATT (FWD/RVS )

Repeater RUN

NO

AGD Mode-. FWD Gain is linked to RVS Gain-. If ‘ON’ : FWD/RVS gain is linked-. If ‘Off’ : FWD/RVS gain is not linked

AGD Offset- Difference between FWD Gain and RVS Gain

4. Major Function

Automatic Shutdown

ShutdownLevel

Output Power

AMP OffLevel

5sec 5sec5sec 5sec

5sec 5sec 5sec

Alram

• If Downlink/Uplink Output level is over +22dBm±1dB for 5 sec, Repeater Downlink and Uplink is Shutdown for 5 sec .

• This auto-shutdown algorithm can repeat 3 times

• Operator can adjust the times of ASD algorithm and duration of overpower shutdown period.

5. Coverage Simulation

FloorSmallOut

3WayDivider

RFCable

ServiceANT

FreeSpace

BarrierInput

HandsetService Radius

(@ -65dBm)

B1

20dBm -5dB -5dB

0dBi -63.5dB

-15dB -65dBm

20m

B2 7dBi -70.5dB 44m

B3 7dBi -70.5dB 44m

- Define : The distance of -65dBm received signal power to mobile handset

- Coverage area: Total 1,000m2 (at WCMA 850) - Connectable 2~4 service antennas - Considered -15dB as barrier loss

- Typically received signal sensitivity of mobile handset is -104dBm (GSM, DCS, CDMA, WCDMA)

- Coverage can be expanded with more service antenna

6. Installation Procedure

-. GSM/WCDMA Input Level check -25dBm ~ -55dBm/Total (typical)

-. Bracket Installation ( Next Page)

-. Connect Cable (Donor / Service ANT.)

Donor ANT. port Service ANT. port

Input Power(dBm) Output Power(dBm) System Gain(dB) Isolation(dB)-25 20 45 60-35 20 55 70-45 20 65 80-55 20 75 90-65 10 75 90-75 0 75 90

Bracket Installation

6. Installation Procedure

Wall Mounted Bracket

Install Bolt

Braket Insert Point

7. GUI User Guide

1. COM Port Setting2. CONNECT Click3. MAIN Click

- Double Click Execution File (DBR1800_850_20dBm.exe)

4. Input Operator #1 : ARM1 MIN5. Input Operator #2 : ARM2 MIN6. Input Repeater phone No.: MIN

PLL Status - Green : normal- Red : abnormal (NMS Report)

GSM Modem RSSI

- (Graphical User Interface)

7. GUI User Guide

- Checking System Gain and Output Power

Path Control- ‘On’ : normal- ‘Off’ : abnormal (NMS Report)

Manual ATT control- 30dB / Max- If ALC Off : 0dB

Gain : Gain status 75dB ~ 45dB

Output Power : Output Power status 24dBm ~ -7dBm if <-7dBm ‘NA’ dispaly

7. GUI User Guide

- ALC Control / Status

ALC Mode (Automatic Level Control) - ‘On’ : normal - ‘Off’ : abnormal

ALC Level - 20dBm defoult - settable

ALC Atten - Applied ATT Vaule

Green LED : normalRed LED : abnormal

AGD Mode-. FWD Gain is linked to RVS Gain-. If ‘ON’ : FWD/RVS gain is linked-. If ‘Off’ : FWD/RVS gain is not linked

AGD Offset- Difference between FWD Gain and RVS Gain

7. GUI User Guide

- ASD Control / Status

ASD Mode (Automatic Shutdown) - ‘On’ : normal - ‘Off’ : abnormal

ASD Level - 22dBm defoult - settable

Time - Time period of Over Power & Shutdown - Settable

Count - Max number of ASD Algorithm - settable

Green LED : normalRed LED : abnormal

7. GUI User Guide - Control / Status

Communication status Factory Defoult set System Reset Apply Input vaule

8. NMS User Guide

- Double Click Execution file (DBR1800_850_20dBm.exe)

1. COM Port Setting

2. Modem Con. Click

8. NMS User Guide

3. Modem Check Click

4. ‘OKE0’ Message check

8. NMS User Guide

5. Input Repeater Phone No

6. Connect Click

8. NMS User Guide

7. Connection Success!!

8. NMS User Guide

8. ‘CONNECT 9600/RLP’

9. MAIN Click

8. NMS User Guide

10. MAIN Display