Quectel has launched the QLM29H dual-band, multi-constellation GNSS receiver.

Designed for easy integration, it combines the LC29H GNSS module and an integrated GNSS patch antenna to simplify RF design. It supports dual-band L1 and L5 signals, providing multipath mitigation, especially in difficult environments such as urban canyons, where high-precision positioning is critical.

“The Quectel QLM29H range of receivers support use cases from micromobility to agriculture with precise positioning capability,” said Norbert Muhrer, president of Quectel Wireless. “The QLM29H helps customers adapt or modernise existing designs by enabling them to access dual-band GNSS rather than only L1 signals, provided the legacy product has a simple uart interface. Additionally, the receiver provides customers with the flexibility to use GNSS as a plug-in option, enabling them to choose whether to integrate it based on their specific needs.”

The receivers support concurrent reception of global and regional GNSS constellations, such as GPS, Glonass, Galileo, BDS and NavIC, as well as QZSS and SBAS. The internal LNA, diplexer and SAW filters enhance the receivers’ sensitivity and anti-interference capability.

The high-precision positioning capability makes it suitable for applications such as micromobility, precision agriculture, navigation, insurance telematics and tractor steering systems and enables easy upgrading of existing legacy L1 only systems that have a spare RS232 port without complete product redesign.

Designed to accelerate time to market, the receiver offers features including dual frequency support, enhanced accuracy of one metre in autonomous mode and centimetre-level precision in the real-time kinematic (RTK) positioning-capable variant. The dead reckoning (DR) function also helps ensure the module’s positioning performance, even in weak signal areas or when GNSS signals are not available.

Flexible integrations, coupled with simplified user RF design, make the GNSS receiver appealing to use cases such as tractor steering systems and mining. It also provides an alternative to expensive ruggedised tablets, which were sold with proprietary software and GNSS fully integrated. The QLM29H can, via a simple four wire interface, enable off-the-shelf, standard tablets with open-source software to support GNSS.

Quectel simplifies product design by offering GNSS modules and antennas, such as the QLM29H, as a pre-integrated package, although users can buy module and antennas separately if they wish. This helps accelerate time to market and helps assure the performance.

The QLM29H (www.quectel.com/product/qlm29hxaa-gm-gnss-smart-antenna-receiver) is RoHS compliant, has an operating temperature of -40 to +85˚C and dimensions of 72.0 by 57. by 22.3mm.

Quectel (www.quectel.com) employs 5600 professionals for innovation in cellular, GNSS, wifi and Bluetooth modules as well as antennas and services.