On January 7, during CES 2025, Quectel, a global leading provider of IoT solutions, announced the launch of its ultra-compact multi-constellation GNSS positioning module, the LS550G.
This module not only achieves fast and precise positioning but also offers several advantages such as a compact size, ultra-low power consumption, high sensitivity, and excellent cost performance. It provides an ideal new solution for applications that demand higher power efficiency and compact design. Particularly for portable devices and wearable terminals that favor thin and light modules, the LS550G is undoubtedly the best choice to meet their stringent requirements.

Zhang Dong, COO of Quectel, stated, “The LS550G demonstrates Quectel’s firm commitment to GNSS technology innovation. With its ultra-compact form factor, multi-constellation support, advanced SIP design, low power consumption, and other technical features, the LS550G will offer the market an even better, more comprehensive, and cutting-edge GNSS solution.”
Multiple Assurances for Accurate Positioning
Quectel LS550G can receive signals from multiple satellite systems, including GPS, GLONASS, Galileo, BDS, QZSS, and SBAS. This significantly enhances satellite visibility, effectively reduces the initial positioning time, and improves positioning accuracy, especially in dense urban environments.
To further meet the positioning and orientation needs in weak signal and interference-prone environments and improve the reliability and stability of terminal devices, the LS550G integrates a high-performance LNA (low noise amplifier), TCXO (crystal oscillator and frequency divider), and RTC (real-time clock). This gives the module excellent sensitivity and anti-jamming performance, enabling accurate positioning and orientation functions in complex environments. Additionally, without an external LNA, the LS550G achieves a -165dBm tracking sensitivity and -147dBm capture sensitivity through its embedded multi-tone active interference eliminator, ensuring reduced vulnerability to external signal interference.
Perfect Adaptation in Performance and Power Consumption
In terms of packaging design, Quectel LS550G uses System in Package (SIP) technology, which minimizes the module’s size, achieving an ultra-compact form factor of just 5.0 mm × 5.0 mm × 1.05 mm. This design not only saves space but also reduces signal attenuation, minimizes interference, and enhances its shock, moisture, and corrosion resistance. The LS550G also boasts high integration, flexible component options, large development space, and high cost performance, along with rich external interfaces like UART, I2C, and SPI, further expanding its potential application scenarios.

Moreover, the LS550G excels in power consumption design. By combining enhanced prediction orbit chip (EPOC) technology with adaptive low-power (ALP) mode, it strikes a perfect balance between positioning accuracy and low power consumption. EPOC technology allows the LS550G to use ephemeris data stored in internal RAM, with a validity of up to 3 days, to automatically calculate and predict satellite orbits. This enables quick positioning and energy efficiency even under low signal conditions. In Tracking mode, the LS550G operates at an ultra-low power consumption of just 28mW at a voltage of 1.8V, and with the help of ALP technology, it can adaptively adjust on/off times based on the environment and motion conditions, achieving even lower power consumption.
The LS550G’s high performance, low power consumption, and compact size make it an ideal solution for a wide range of consumer and industrial applications, such as industrial PDAs, wearable devices, sports/asset trackers, and more.
To further address potential product compatibility issues customers may encounter during development, Quectel will also offer antenna products that are compatible with the module. The LS550G can be paired with Quectel’s dedicated active and passive antennas.