Quad band 700/1800/2600/3500MHz Active DAS Fiber Optical DAS System for Wireless Coverage Expansion

Digital Fiber Optical DAS supports 4G, 5G, and emergency services across 700/1800/2600/3500MHz bands. This 2Watt Digital Optical Repeater System with 33dBm output power provides comprehensive signal distribution for modern wireless networks.

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. Today's networks must carry both voice traffic and large data volumes from smartphones and connected devices, requiring advanced DAS systems with high Signal-to-Noise plus Interference Ratio (SNIR) for optimal throughput.

ATNJ integrates small cells and Wi-Fi solutions into our portfolio, offering 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 fiber transmission, 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 for minimal-loss signal distribution
• Expansion Unit (EU) - Provides additional fiber ports and cascading capability for scalable DAS architecture in large venues
• Network Management System (NMS) - Software platform for remote monitoring, fault diagnosis, and real-time component adjustment

• Low signal loss over long distances - Transmits RF signals over several kilometers with minimal attenuation
• Multi-band and multi-operator support - Simultaneously handles 4G/LTE, 5G NR, and public safety bands
• High signal quality with low noise figure - Digital processing ensures excellent SNR and EVM for reliable coverage
• Scalable and flexible architecture - Easy addition or reconfiguration of remote units for capacity expansion
• 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 networks.

We provide OEM, ODM services and undertake projects for various RF equipment, wireless repeaters, multi-frequency DAS systems, and complete indoor/outdoor signal coverage solutions. Our digital repeaters support up to 12 subbands simultaneously with local and remote control capabilities, serving signal operators and communication integrators worldwide.

Company Facilities and Manufacturing

Our product field extends to Public Safety and low-altitude economic applications, including Public and Private Network Digital Multi-subband Repeaters, Integrated Base Stations, and advanced RF technologies. We continue to develop easier-to-use, more functional, and intelligent RF products and look forward to collaborating with partners worldwide.