Quadrifilar Helix structure with wide-angle circular polarization characteristics, enhancing low-elevation satellite signal reception capability; High gain and low noise figure design, supports multi-band, multi-system GNSS signal reception; Compact size and lightweight, with flexible installation, making it suitable for a wide range of devices and application scenarios; SMA connector, supports RF signal transmission and coaxial DC bias power supply; IP67 water-proof, suitable for long-term stable operation in outdoor environments