Quectel LS550G multi-constellation GNSS module

Quectel Wireless Solutions has launched the LS550G, an ultra-compact multi-constellation GNSS module designed for fast positioning. With its 5 x 5 x 1.05 mm form factor, the module is suitable for power- and space-sensitive applications, especially those that require very thin modules including portable and wearable devices.

The GNSS module supports concurrent reception of GPS, GLONASS, Galileo, BDS, QZSS and SBAS constellations, enhancing satellite visibility, reducing time to first fix and improving positioning accuracy, particularly in dense urban environments. Equipped with dual integrated LNA, TCXO and RTC, the module offers high sensitivity, enabling accurate positioning and fast acquisition in challenging conditions.

The System-in-Package (SIP) technology minimises the module’s size; this design not only saves space but also reduces signal attenuation; minimises interference, moisture ingress and corrosion; and enhances shock resistance.

The module also features a -165 dBm tracking and -147 dBM acquisition sensitivity without an external LNA. It supports anti-jamming functionality with an embedded multi-tone active interference canceller, enabling the module to mitigate or resist interference from unwanted signals that could disrupt its ability to determine location.

The module is designed to deliver high performance with low power consumption — just 28 mW at 1.8 V — while utilising four GNSS constellations. The Enhanced Prediction Orbit on Chip (EPOC) technology allows the module to automatically calculate and predict satellite orbits using ephemeris data stored in internal RAM, valid for up to three days. This enables the module to achieve fast position fixes, even under low signal conditions, while maintaining energy efficiency.

The enhanced performance of the module makes it suitable for a range of consumer and industrial applications. The module can also be used with both active and passive antennas. It will be available in Q2 2025.