High Power Radio Frequency 37dBm EGSM DCS LTE B20 Wide Band Signal Booster

Summary

 Working Principle

The repeater is connected to a BS antenna, directed towards the base station, and to a MS antenna directed towards the area to be covered. These antennas are connected to the repeater with N type male connectors.
Our BDAs are controlled by powerful microprocessors. Alarm and operational LEDs are visible on the repeater front. The repeater works with convection cooling without fan.
Operational parameters such as gain, ower levels, etc. are set using a desktop or notebook and the OMT32, which communicate, locally or remotely via modem, with the repeater control unit (CU). Remote operation is performed using a telephone line or a built-in mobile phone equipped with a data interface.(option)

Downlink
The signal from the base station is received via the repeater BS antenna and is then the signal passes BS duplex filter (TPX), is amplified in a low noise amplifier (LNA), and enters the downlink channel boards (BSA), the signal first mixer stage on the BSA amplifier board, which is controlled by a synthesizer, converts the received frequency down to the IF frequency. The signal is then filtered by a SAW band-pass filter and, amplified before it is fed to the second mixer stage, controlled by the same synthesizer as the previous one, for converting back to the original frequency.
The output signal from the mixer is then amplified in the power amplifier and fed to MS duplex filter (TPX), and then it is fed to the repeater MS antenna.
Uplink
The signal from the Mobile phone is received via the repeater MS antenna and is then the signal passes MS duplex filter (TPX), is amplified in a low noise amplifier (LNA), and enters the uplink channel boards (BSA), the signal first mixer stage on the BSA amplifier board, which is controlled by a synthesizer, converts the received frequency down to the IF frequency. The signal is then filtered by a SAW band-pass filter and amplified before it is fed to the second mixer stage, controlled by the same synthesizer as the previous one, for converting back to the original frequency.
The output signal from the mixer is then amplified in the power amplifier and fed to BS duplex filter (BS-TPX), and then it is fed to the repeater BS antenna.
As shown:

Function Modules Introduce

1) RF Part
TPX: Duplexer, the receiving and transmitting signals are isolated; ensure that the receiver and transmitter can simultaneously work. It is composed of Six different frequency band-pass filter; avoid the local transmission signal transmitted to the receiving terminal.
LNA: Low Noise Amplifier Provide small signal low noise pre-amplification and input protection to prevent equipment damage caused by excessive signal.
BSA: Work Band Selection Filter Amplifier use VCO and PLL technology to provide superior frequency-selective filtering characteristics.
PA: Power Amplifier High linearity, high efficiency LDMOS devices to ensure that the device has enough power and good signal quality.
2) Detection Circuit and Control Circuit (The Main Control Module)
The main control module is used to configure the operating parameters of device, and detects operation status of the device automatically. The main control module uses RS485 bus technology to communicate with each RF module, and communicate to human-computer exchange interface with RS232 mode.
Function:
Adjust the gain of the uplink and downlink.
Set maximum output power of the uplink and downlink.
Detect operating temperature of the equipment.
Detect output power of uplink amplifier and downlink amplifier.
Detect input power of uplink and downlink.
Check the uplink LNA and downlink LNA for working properly
Check the uplink and downlink "Band selective filter" for working properly.
Check the uplink PA and downlink PA for working properly.
Switch on and switch off the power amplifiers of uplink and downlink.
Set the frequency of uplink signal channel and downlink signal channel.
Detect the VSWR of downlink output antenna port.
3) Power
It uses 220V AC power supply, through the built AC power supply, conversion to the desired +9 V, +28 V DC Voltage.
 

Interface Description:

RF connector: BTS port connect donor antenna (near the base station side) , BTS-30dB port is monitor port is BTS port Minus 30dB; MS port connect retransmission antenna (Near the coverage area), MS -30dB port is monitor port is MS port Minus 30dB;
AC PWR: 220VAC. AC POWER
Fixed Tripod: For fixing the equipment on a wall or a holding pole.
Grounding Solder Lug: GND location of equipment grounding.
Indicator light:
PWR: Blue, normally on, when the power is off or power failure, the light goes out.
RUN: Blue, flashing green when the equipment is in normal operation;
Alarm:Red, If the equipment is faulty, the light will be on, otherwise it will be off
Note: That the above indicators are on the monitoring motherboard

Project Preparation

Site Survey

1. That power is available.
2. Proper grounding nearby.
3. For cable connection.
4. Local source signal strength> -80dBm. Preferably> -65dBm.

 Installation Tools

System Installation

repeater Installation
It can be holding pole or wall mounting way. It should be installed in ventilated place, vertically on a wall, the upper part of the equipment to be considered more than 50cm from the ceiling, the lower part of the equipment needs more than 100cm from the floor.

repeater outline dimension drawing

Dimension drawing of mounting bracket

Wall-Way Mounting Sketch Map

Antenna and Feeder Installation and Precautions

Connect the Ground and Power Supply

System Commissioning

 Measure VSWR of Antenna Feeder System

Measuring AC Input Voltage

 Measuring Downlink Output Power

Also, if there is no power meter, you can connect all the antenna feeder system, open the cover of the equipment and then read by software, but also accurate.

 

Call Test

Adjust the Gain of Uplink and Downlink

Uplink and downlink gain of the equipment can be adjusted independently. According to the downlink output power and call the testing situation, can adjust the gain of the uplink and downlink in order to achieve the desired effect of the repeater.
When the talk test intermittent, increase uplink gain; when large call noise, reduce downlink gain.
If the downlink input signal power is too large and cause the output power is too large, can reduce the downlink gain(increase downlink ATT) ; If the downlink input signal is too small and resulting in output power is insufficient, can increase the downlink gain(reduce downlink ATT).
Adjustment range: 1-31dB.
Gain adjustment method: (See operating instructions of monitoring software)

Shenzhen RDSignal Technology Co., Limited is one of the leading suppliers which specializes in designing and manufacturing RF Jamming Equipment and Wireless Coverage Products.

RF Jamming Equipment include Cell Phone Signal Jammer and RF Communication Jammer(20-6000MHz).

RDSignal Technology Co.,Ltd. is the foremost innovator in the field of RF jamming, offering a comprehensive range of jamming equipment and systems which have a proven record of reliability and performance in all types of applications and environmental conditions.

Such as, Drone jammer, UAV jammer, High power bomb jamming devices, IED jammers, Digital programable jammer, VIP Convoy Bomb Jammers (RCIED Jammers), Mobile Phone Signal Jammers, Prison Jammers, Portable Jammers, Handheld Jammers, to suit all types counter terrorism activities.

RDSignal products have been exported to more than 60 countries and regions around the world. Such as Southeast Asia, Africa, Europe, South America and the Middle East.

Let us hand in hand and create a glorious cause!

Q1. Could I get a sample before bulk order?

Yes, we offer the sample for all models but charged.

Q2. What should I do if I don't know about frequency in my country?

Please feel free to contact us with your inquiry, we will find the frequency you need and address your problems.

Q3. Do you accept OEM/ODM order?

Yes, we can customize the brand logo, colors, and frequencies.

Q4.Shipment Date

Q6.Payment Method

T/T, Western Union, Paypal, and Credit Card are available,
but we suggest paying by Alibaba Trade Assurance, the most favor, and security method.
*Other methods please contact us with more details.