The AT-24M Spherical Near-Field Multi-Probe Test System is a portable OTA and antenna test chamber equipped with 24 probes. Designed and constructed in compliance with CTIA's sampling requirements, it supports frequencies from 600MHz to 8GHz. The system features a compact footprint, high mobility, and rapid deployment capability. Integrated with the latest self-developed algorithms and software from ATNJ Technology, it enables comprehensive antenna performance testing and OTA testing for all common mobile communication and wireless broadband standards, including 2G/3G/4G/5G, Wi-Fi, and Bluetooth. It also supports non-signaling active testing, ensuring stable and fast operation. This system is the preferred wireless testing solution for antenna and whole-device development in mobile communications, IoT, and laptop applications.
Wideband Coverage – 0.6GHz to 8GHz (supporting rapid upgrade to 12GHz), compatible with 2G/3G/4G/5G, Wi-Fi, Bluetooth, and GNSS standards.
Omnidirectional Sampling – 360° full coverage, with turntable minimum sampling resolution of 0.5°.
Comprehensive Testing – Supports full performance testing of linearly polarized, circularly polarized, and elliptically polarized antennas, including gain, efficiency, and radiation pattern measurements.
Large Sampling Distance – Probe matrix inner diameter of 1.2m, maximum sampling distance of 0.6m.
Application Fields
1.OTA Performance Measurement of Various Wireless Products – Including communication terminals, drones, automotive electronics, and IoT devices.
2.Antenna Measurement in 600MHz to 8GHz Frequency Band.
Product Specification
Model
Z&B Mini OTA Lab
Dimension(L*W*H)
1784mm*1100mm*1885mm
Test Cavity
Manual
Absorbing Material Size
500mm*500mm*200mm
Probe Count
24
Rated Power(excluding instrumentation computer)
300W
Rated Voltage
110Ac~220Ac
Gross Weight
400kg
Performance Index
Model
ATNJ-24M
Frequency Range
600MHz~8GHz
DUT Dimension
≦0.6m
(DUT) Weight
≦15Kg
Typical Dynamic Range
75dB
Passive Test Speed
1 Min/10FP
Field Transition Speed
2 S/1FP
Gain Stability
±0.25dB
Typical TIS Speed
4 Min/CH
Typical TRP Speed
40 S/CH
TRP Stability
±0.3dB
TIS Stability
±0.5dB
Test Function
Passive Test
Supported Frequency Range
600MHz-8GHz
Supported Polarization
Linear Polarization、Circular Polarization、Elliptical Polarization
Test Content
Gain、Efficiency、Radiation Pattern、LHCP/RHCP Gain、Beamwidth、Non-Circularity、Axial Ratio act
Active Test
Supported Frequency Range
600MHz-8GHz
Test Metrics
Overall Unit TRP、TIS、EIRP、EIS
Test Mode
2G/3G/4G/5G 、Wi-Fi b/g/n/a/ac/ax、BT 、NB-IOT、Cat-M、GNSS
Configuration list
Hardware Configuration
Number
Project
Quantity
Unit
Note
1
Mobile Full Anechoic Chamber
1
Set
Standard
2
Positioner System (with Control Unit)
1
Set
Standard
3
Sampling System (with Control Unit)
1
Set
Standard
4
System Control Enclosure
1
Set
Standard
5
Standard Rack
1
Unit
Standard
6
Test Computer
1
Set
Standard
7
Standard Antenna (with Fixture)
1
Unit
Option
Software Configuration
Number
Project
Quantity
Unit
Note
1
Active OTA Test Software
1
Set
Option
2
Passive Test Software
1
Set
Option
Shenzhen ATNJ Communication Technology Co.,LTD. is located in Shenzhen, Silicon Valley, China.
Committed to the research and development, production and sales of active phased array radar, software defined radio (SDR) platform, software radio custom AI algorithm, Ultra-wideband power amplifier, RF module, communication network optimization solutions and other products, is a professional OEM/ODM radio equipment research and development type manufacturing plant.
The future is an era of rapid development of low-altitude economy and the outbreak of artificial intelligence. As an industry leader, ATNJ always follows the pulse of The Times, adheres to the original aspiration, is committed to providing customers with excellent communication solutions, providing quality OEM and customized ODM services.
We always adhere to the customer-centered, provide a full range of services. From product consulting, program design, customized development, design and production one-stop services. Our goal is to ensure that customers can feel our professional services while enjoying quality products. To provide customers with strong competitive communication products, to meet the rapid development of the market demand, to achieve common development with users, we look forward to working with you to create a better future!
Dear all:We cordially invite you to attend MWC Doha 2025 in Qatar. As the premier global event in the mobile communications industry, the MWC series has consistently set the pace for industry trends, bringing together thought leaders, innovation pioneers, and policymakers from around the world. This marks the first time MWC is being held in Doha, offering you an unparalleled experience.Address: Doha Exhibition and Convention Center (West-bay, P.O. Box 10600 - Doha, Qatar)Date: 25th-26th NovBOOTH NUMBER: G40Qatar is committed to building an advanced digital society, and MWC Doha 2025 was born out of this commitment. The exhibition will help Qatar achieve its 2030 digital agenda and national vision, promote digital transformation in the Middle East, and enhance Qatar's and the region's influence in the field of global scientific and technological innovation. This is not only a showcase of technology, but also an important platform for promoting industry cooperation and progress.As a major global event in the field of mobile communications, MWC Doha will bring together industry leaders, decision-makers, and innovators from around the world. Here, you will engage in in-depth exchanges with elites from all over the world, jointly explore cutting-edge technologies and development trends in the industry, obtain the latest market dynamics and information, and unlock unlimited opportunities for your career development. At the same time, you will have the opportunity to experience firsthand the achievements of digital transformation in the fields of artificial intelligence, advanced 5G technology, and smart mobility, and witness the rapid progress of technology.This exhibition provides you with a unique platform for communication and cooperation. You can establish close ties with industry peers, expand your business scope, and seek more opportunities for cooperation. You can also engage in in-depth discussions with industry experts, gain professional insights, and help your company stand out in the fierce market competition.We expect to join you at MWC Doha 2025 to usher in a new chapter in the mobile communications industry and drive the progress and development of the digital society together!Best regards,
Shenzhen ATNJ Communication Technology Co.,LTD
Microwave Frequency-Shifting Repeater System
The Microwave Frequency-Shifting Repeater is a fundamental tool for extending microwave backbone networks. By receiving a signal on one frequency, amplifying it, and retransmitting it on a different frequency, it overcomes the critical feedback problem inherent in simple amplification. This characteristic, combined with high gain, directional antennas, and robust design, allows network operators to bypass LOS obstacles and economically expand coverage and capacity across challenging terrains, forming the invisible backbone for critical communication services.
Diagram
Operating Principle of the RF/Microwave Frequency-Converting Near-End Unit (MU+RU) in a Microwave Frequency-Shifting Repeater System--The MU consists of a MU radio frequency unit, a near-end microwave RU, and a microwave antenna.
The microwave unit and the RF unit are connected with a coaxial cable. The power supply mode of the microwave unit is coaxial cable feeding mode.
Product Features:
• Frequency Translation: Receives an incoming microwave signal on one specific frequency
•Self-Interference Mitigation: The primary purpose of frequency shifting is to avoid feedback oscillation
•Simplex Operation: Typically operate in one direction
•Spectrum Utilization: Consume additional spectrum resources because they transmit on a different frequency than they receive
•Deployment Flexibility: Enable coverage extension in areas where direct fiber or cable installation
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The Secret Weapon to Boost Cell Phone Signal: Mobile Signal Boosters
In modern society, cell phone signal has become an almost indispensable part of our lives. Whether it's office communication, video conferencing, or daily entertainment, a good cell phone signal is crucial for a productive life. However, in remote areas, basements, or homes with thick walls, weak signal and frequent dropped calls are often a headache. Fortunately, mobile signal boosters have emerged, providing a simple and effective solution.
What are mobile signal boosters?
Mobile signal boosters, also known as cell phone signal amplifiers or boosters, are devices designed to boost cell phone signal strength. They receive weak signals from carrier base stations, amplify them electronically, and then retransmit them indoors, enabling phones to receive a strong and stable signal. Simply put, they act like a signal booster, allowing your phone to operate smoothly even in signal-deprived areas.
Plug-and-play, easy installation
Traditional signal improvement solutions often require complex wiring installation or commissioning by professional technicians, which is not only time-consuming and labor-intensive, but can also be expensive. Modern mobile signal boosters overcome this limitation. Most are designed to be plug-and-play, making them easy for average users to install without requiring specialized knowledge.
Installation is typically straightforward:
Choose a suitable location: Place the booster's external antenna in a location with strong signal strength, such as near a window or on a balcony.
Connect the main unit: Connect the external antenna to the main unit indoors via a cable.
Set up the indoor antenna: Place the indoor antenna in a frequently used area to ensure signal coverage throughout the room or office.
Power on: Plug in the power cord and the device automatically begins working, significantly improving your mobile signal within minutes.
The entire process typically requires only a few steps, even without opening the manual, making it ideal for convenience-conscious home users and small offices.
Widely applicable
Mobile signal boosters are not only suitable for home environments but also for offices, shops, cafes, underground garages, and more. For frequent travelers, portable models are also available, making it easy to address signal issues in hotels or temporary offices. Whether making calls, texting, or surfing the high-speed internet, a signal booster keeps your devices running at peak performance.
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Improving Mobile Signal Experience: A Guide to Mobile Signal Booster for Trucks and RVs
In modern life, mobile internet has become an integral part of work and entertainment. For truckers on the road and RVers who enjoy road trips, a stable mobile signal is particularly important. However, whether on remote highways or rural roads, signal dead zones are often a problem. Fortunately, mobile signal boosters offer an ideal solution for these situations, allowing you to stay connected wherever you are.
What is a mobile signal booster?
A mobile signal booster, also known as a signal booster or signal repeater, is a device specifically designed to strengthen mobile and data network signals. It receives weak signals through an external antenna, boosts them with an internal amplifier, and then transmits the signal to the vehicle's interior through the internal antenna, improving call quality and data speeds. These devices can support 2G, 3G, 4G, and even 5G networks, providing users with a more stable communication experience.
Unique Needs of Trucks and RVs
MobilityTrucks and RVs often travel long distances, where signal conditions are constantly changing. Therefore, a signal booster must be able to operate continuously while on the move, ensuring uninterrupted calls and data transmissions.
CoverageLarge vehicles have larger interiors, and metal bodies can easily block signals. When choosing a signal booster, consider its coverage area to ensure that every corner of the vehicle receives a boosted signal.
Multi-User SupportRVs often carry multiple devices, such as mobile phones, tablets, and laptops. A high-quality signal booster can support multiple devices simultaneously, preventing slowdowns or interruptions when multiple people are online simultaneously.
Easy InstallationFor truckers and RV travelers, installation shouldn't be complicated. Most mobile signal boosters feature separate external and internal antennas, making them easy to adjust and secure to the vehicle.
Advantages of Mobile Signal Booster
Boosting Signal StrengthOn highways far from cities or in remote areas, mobile phones often display weak or no service. Signal boosters can effectively strengthen weak signals, making calls clearer and data transmission more stable.
Reduce Dropped Calls and Call InterruptionsFor logistics drivers or long-distance travelers, dropped calls can mean delayed information and even missed work. Signal boosters can significantly reduce the risk of dropped calls, ensuring smooth communication for work and personal life.
Boost Network SpeedBeyond call quality, signal boosters can also increase mobile data download and upload speeds, making navigation, video calls, online entertainment, and other experiences smoother.
Save BatteryIn weak signal conditions, phones constantly search for networks, which drains the battery faster. Using a signal booster reduces the need to search for a signal, extending battery life.
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Optimizing Signal Quality on Farms and Ranches: Applications and Benefits of Mobile Signal Boosters
In modern agriculture and ranching, stable mobile network signals have become crucial for productivity. However, since farms and ranches are often located in remote or open areas, weak or intermittent signal drops are common, hindering daily management, monitoring systems, and emergency communications. Mobile signal boosters have become a leading solution to this problem.
What are mobile signal boosters?
Mobile signal boosters, also known as mobile signal amplifiers or signal boosters, are devices designed to boost mobile communication signal strength. They receive weak signals from nearby devices, amplify them, and then transmit them to mobile phones, tablets, computers, and other devices, achieving long-range coverage and stable signal quality. For farms and ranches, this means maintaining efficient communication even in remote locations.
Sources of Signal Problems on Farms and Ranches
Farms and ranches often experience the following signal issues:
Remote Location: Far from city base stations, signal strength is inherently weak.
Terrain Obstructions: Hills, trees, and large storage facilities can all affect signal transmission.
Wide Coverage: Traditional mobile signals may not cover the entire farmland or ranch, especially areas far from main buildings.
Diverse Equipment Requirements: Modern farms utilize smart devices such as drones, sensors, and remote cameras, requiring a stable network.
Unresolved issues can hinder farm management efficiency and even pose risks in emergencies.
Advantages of Mobile Signal Boosters on Farms and Ranches
Expanded Signal Coverage: Signal boosters can amplify weak signals to cover areas far from base stations. For farms or ranches covering hundreds or even thousands of acres, this means workers, equipment, and monitoring systems can stay online.
Improved Network Stability: In severe weather or high-data usage, signal boosters can reduce disconnections and latency, ensuring continuous data transmission and remote monitoring for smart devices.
Cost Savings: Compared to building dedicated base stations or renting satellite networks, signal boosters are affordable and easy to install, making them a cost-effective solution.
Multi-Device Support: Modern boosters can simultaneously support multiple phones, tablets, and smart agricultural devices, benefiting the entire farm ecosystem.
Installation Recommendations
When installing Mobile Signal Boosters on a farm or ranch, please note the following:
Select a high-gain antenna: A high-gain antenna can effectively capture signals over long distances, especially in areas with weak signals.
Install in a high or open area, such as a warehouse roof or tower, to minimize interference.
Regular maintenance: Check the antenna cable and power supply to ensure long-term stable operation.
ATNJ provide 7x24 online service here.
Meanwhile ,you can contact us for knowing the detail by the above contact info to the real-time calling or video of the factory. (Working time:8:30 --18:00 China GMT+8:00)
MANUFACTURING
ATNJ have itself factory with advanced automatic machines, strictly process control system and can manufacture the repeater to meet your demand.
Multi-platform presentation
ATNJ products hot sale in different kind online platform like Ebay, Amazon,Aliexpress,Alibaba, Made in China ,etc.
Meanwhile providing repeater for many famous dropshipping online store in google for years.
Rich in Repeater categories
ATNJ provided rich kind of repeater system for customer choice.Pico/High power gsm 2G,3G, LTE4G, NR 5G signal repeater,Digital and Optical Fiber repeater.
Professional RF OEM/ODM Factory--- Repeaters,Active DAS,Frequency Shift Repeater,RF Modules,RF Combiners,RF Direct Sampling SDR Board,Local and Remote Management System
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