Quectel QLM29H – GNSS L1/L5 Antenna Module for Real-Time Precision Positioning

Quectel QLM29H - The Latest GNSS Technologies in One Compact Module

Quectel’s new GNSS L1/L5 antenna module, the QLM29H, is built to keep up with the growing demands of modern positioning applications, particularly in the automotive, industrial, and intelligent transport sectors. This compact, high-performance module combines a powerful GNSS chip with a dual-band antenna, delivering precise location data, strong signal stability, and easier integration into your design.

This multi-GNSS module was designed to accelerate product development and shorten time to market, but the top priority was to deliver an accessible, feature-rich solution with dual-frequency support, 1-metre accuracy in autonomous mode, and centimetre-level precision in the real-time kinematic (RTK) positioning-capable variant.

Thanks to built-in dead reckoning (DR), the QLM29H maintains solid positioning performance even in areas with limited signal reception or GNSS unavailability.

6 key features of the Quectel QLM29H module: 

1. Multi-constellation support
   Compatible with GPS, Galileo, BeiDou, GLONASS, and QZSS, the module improves satellite visibility and enhances positioning accuracy.
    
2. Dual-band reception (L1/L5)
   Simultaneous reception of L1 and L5 signals improves accuracy and reliability, especially in dense urban areas or environments with high signal reflections.
    
3. Integrated design
   Combines GNSS chip and antenna into a single compact module, reducing design complexity and time-to-market.
    
4. High sensitivity, low power consumption
   Optimised for low-power applications while maintaining excellent signal reception.
    
5. Standard interface
   Easy integration with host platforms via UART/I²C and standard communication protocols.
    
6. Compact size
   The integrated form factor is perfect for space-constrained applications such as drones, telematics units, and autonomous vehicles.

The QLM29H module is best suited for the following applications:

• Advanced Driver Assistance Systems (ADAS)
• In-vehicle navigation
• Fleet management and tracking
• Unmanned Aerial Vehicles (UAVs)
• Surveying and mapping devices
• Smart city and infrastructure monitoring

Technical specifications of the Quectel QLM29H module:  

• GNSS bands: L1, L5
• Satellite systems: GPS, GLONASS, Galileo, BeiDou, QZSS
• Interfaces: UART, I²C
• Antenna type: Integrated dual-band patch antenna
• Operating voltage: 3,0 – 3,6 V
• Form factor: Compact SMT package
• Operating temperature: –40 to +85 °C

Why choose the Quectel QLM29H module?

This powerful dual-band GNSS antenna module simplifies high-precision design by combining RF, baseband, and antenna into one compact unit. It saves valuable board space, improves electromagnetic compatibility (EMC), and helps speed up product development. With dual-frequency GNSS support, it's a great fit for applications that demand centimetre-level accuracy, without the hassle of complex external RF front-ends or custom antennas.

We’ve added the Quectel QLM29HCAAGM00AAASM-5 GNSS antenna module to our range, and it’s in stock, ready to tackle the challenges of your next project. We’re also gradually expanding our selection of Quectel GNSS modules and can arrange custom orders with favourable terms straight from the manufacturer.