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!
