The Digital Fiber Optical DAS supports 4G, 5G, and Emergency Services across 1800/2600/3500MHz bands. This advanced Active DAS Fiber Optical system provides comprehensive 5G and LTE signal distribution with 2Watt Digital Optical Repeater System capability and 33dBm Digital Optical dual-band amplification.

Distributed Antenna System (DAS) remains the most effective and reliable solution for in-building wireless coverage and capacity. As people spend most of their time in indoor environments, reliable wireless connectivity has become essential. Modern networks must handle both voice traffic and substantial data volumes from smartphones and connected devices, requiring sophisticated DAS designs with high Signal-to-Noise plus Interference Ratio (SNIR) for optimal throughput.

ATNJ integrates small cells and Wi-Fi solutions into our portfolio, providing complete end-to-end wireless network coverage solutions for enterprises of all sizes.

• Master Unit (MU) / Head-End Unit - Converts RF signals from base stations into optical signals for long-distance transmission over fiber, supporting multiple bands and operators
• Remote Unit (RU) - Converts optical signals back to RF for indoor or tunnel coverage, featuring low noise figure and high output power
• Optical Distribution Network (ODN) - Includes single-mode fiber cables, optical splitters, and patch panels that distribute signals with minimal loss to multiple remote units
• Expansion Unit (EU) - Provides additional fiber ports and cascading capability, enabling scalable DAS architecture for large venues or high-rise buildings
• Network Management System (NMS) - Software platform for remote monitoring, fault diagnosis, and real-time adjustment of each component, ensuring high system reliability

• Low signal loss over long distances - Digital fiber optic repeaters transmit RF signals over several kilometers with minimal attenuation
• Multi-band and multi-operator support - Single digital optical DAS handles 4G/LTE, 5G NR, and public safety bands simultaneously
• High signal quality with low noise figure - Digital processing ensures excellent SNR and EVM for reliable indoor coverage
• Scalable and flexible architecture - Remote units can be easily added or reconfigured to expand capacity
• Easy integration with existing networks - Supports CPRI/eCPRI interfaces and hybrid deployment with small cells

Shenzhen A T N J Communication Company Overview

Located in Guangming District Shenzhen, Shenzhen A T N J Communication is a professional RF manufacturer with 16 years of experience in R&D, production, manufacturing, sales, and technical services. Our product portfolio includes Digital LTE/NR series repeaters, SDR core boards, Passive devices, Digital DAS systems, and technical solutions for Public and Private network base stations.

We provide OEM, ODM services and undertake projects for various RF equipment, wireless repeaters, multi-frequency DAS systems, remote network management centers, and indoor/outdoor signal coverage solutions. Our digital repeaters support up to 12 subbands simultaneously with local and remote control+monitoring capabilities.

Company Facilities and Manufacturing

Our mature digital band-selective repeaters have been successfully deployed in overseas mobile operator markets. We extend our expertise to Public Safety and Low altitude economic construction applications, including Public and Private Network Digital Multi-subband Repeaters, Integrated Base Stations, and advanced RF technologies.