GEM1205 compact GNSS module with antenna

GEM1205 Compact GNSS Module with Integrated Antenna The GEM1205 is a high-performance, dual-band (L1/L5) GNSS positioning module powered by a next-generation navigation SoC. It delivers comprehensive tracking capabilities by simultaneously supporting all visible global civil satellite constellations, including GPS, NavIC, BDS, GLONASS, Galileo, and QZSS. The embedded high-efficiency dual-feed patch antenna enables the module to process L1 and L5 tracking loops concurrently. This maximizes satellite visibility and optimizes signal-to-noise dynamics, allowing the module to achieve centimeter-level positioning accuracy and an ultra-short TTFF (Time-To-First-Fix)—even within highly dense, degraded urban environments. Engineered for professional industrial integration, the GEM1205 supports an external active antenna interface featuring autonomous auto-detecting and hardware auto-switching logic. Boasting a highly compact, surface-mount form factor and superior power efficiency, it is widely implemented in asset tracking, automotive logistics, telemetry, and advanced consumer tracking systems. Key Features Full Constellation Tracking: Simultaneous reception of GPS, BDS, NavIC, Galileo, and QZSS across L1 and L5 bands. Differential & Assisted GNSS: Full support for AGPS, DGPS, and various SBAS systems (WAAS, EGNOS, MSAS, GAGAN). Superior Sensitivity: Onboard high-performance LNA and SAW filters significantly filter RF noise. Integrated RF Frontend: Onboard dual-feed (L1 & L5) patch antenna minimizes external hardware routing. Geofencing Capabilities: Supports programmable hardware Geo-Fence parameters for security monitoring. NavIC Satellite Broadcasts: Seamless integration with NavIC message broadcast services*. Ultra-Low Thermal Signature: Highly efficient current draw down to ~40 mA in active dual-band tracking mode. Smart Antenna Switching: Intelligently detects and routes signal streams upon external active antenna interfacing. Micro Form Factor: Ultrathin surface-mount layout sizing at 26.7 mm × 18.5 mm × 7.0 mm. Technical Specifications Frequency Configurations Dual-Band (L1 + L5 Bands) Power Consumption ~ 40 mA (Active Dual-Band Tracking) Physical Dimensions 26.7 mm × 18.5 mm × 7.0 mm Antenna Management Embedded Antenna / External Auto-Switch Support Technical Documentation 📄 Download Allystar GEM1205 Official Datasheet (PDF) ↗