Quectel LS550G ultra-compact GNSS module

Quectel Wireless Solutions has launched the LS550G, an ultra-compact multi-constellation GNSS module designed for fast positioning. It is suitable for power- and space-sensitive applications, especially those that require very thin modules.

The 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, it offers high sensitivity, enabling accurate positioning and fast acquisition in challenging conditions.

The System-in-Package (SIP) technology minimises the module’s size, delivering a form factor of just 5 x 5 x 1.05 mm. This design not only saves space but also reduces signal attenuation; minimises interference, moisture ingress and corrosion; and enhances shock resistance.

The module 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 product to mitigate or resist interference from unwanted signals that could disrupt its ability to determine location.

The module delivers 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 device to automatically calculate and predict satellite orbits using ephemeris data stored in internal RAM, valid for up to three days. This enables it 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, such as wearable devices, sport and asset trackers as well as elderly care products. The product can be used with both active and passive antennas.