In the subterranean world beneath the city, power tunnel corridors act as the “electrical arteries,” ensuring a stable power supply while conserving valuable land resources and preserving urban aesthetics. lintratek recently leveraged its deep expertise in signal coverage to complete a 4.3 km mobile signal deployment across three power tunnels in Yinchuan, Ningxia, reinforcing the city’s smart-infrastructure foundation.
Safety-Critical Communications in the Tunnel Environment
Inside these tunnels, not only are power-monitoring systems installed, but also personnel-tracking and air-quality sensors—to safeguard every worker’s life. Achieving uninterrupted mobile signal coverage throughout the entire tunnel was therefore the project’s primary goal.
Technical Solution: Precision Coverage & Stable Transmission
- Core Technology: lintratek deployed its digital fiber optic repeater. Compared to analog alternatives, digital repeaters offer more stable signal processing, longer equipment lifespan, and lower maintenance costs—all crucial for harsh underground settings.
- High-Power Performance: Each digital fiber optic repeater delivers 10 W of high-power output and supports all major carrier frequency bands, guaranteeing robust mobile signal strength.
Indoor Antenna Strategy
- Straight Sections: High-gain plate antennas were mounted to boost mobile signal penetration.
- Curved Bends: Log-periodic antennas were chosen to optimize signal diffraction around corners.
- River-Crossing Segments: Leaky-feeder (cable) antennas ensured continuous coverage under the water-crossing tunnel.
Overcoming Construction Challenges
The underground environment presented zones of standing water and high humidity, demanding exceptional waterproofing and anti-corrosion measures. lintratek’s industrial-grade digital fiber optic repeaters feature ruggedized, shock-proof, and interference-resistant enclosures—ensuring stable operation despite moisture and vibration.
- Efficient Logistics: By refining transport routes and on-site workflows, the lintratek team completed all installations in just 15 days.
- Performance Validation: Post-deployment tests confirmed voice calls were crystal clear and data throughput exceeded expectations, fully meeting the tunnel’s communication requirements.
lintratek’s Industry-Leading Expertise
With 13 years of experience in manufacturing mobile signal boosters and designing distributed antenna systems(DAS), lintratek is dedicated to delivering top-quality signal coverage solutions across diverse scenarios. The success of this power-tunnel project underscores lintratek’s leadership in the field of mobile signal amplification and its strength in deploying digital fiber optic repeater systems for mission-critical applications.
Post time: Apr-30-2025