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 waterproof, suitable for long-term stable operation in outdoor environments This series of products is a Quadrifilar Helix antenna in structure, features high gain and wide-angle circular polarization characteristics. Compared to traditional antennas, it can receive more low elevation satellite signals to enhance positioning performance, making it suitable for applications such as smart homes, smart agriculture, and high-precision mapping. Specifications: Antenna type: Quadrifilar Helix antenna Frequency band: GPS: L1/L2/L5 BDS: B1/B2a/B2b/B3i GLONASS: G1/G2 Galileo: E1/E5a/E5b Gain: 2dBi Characteristics Impedance: 50Ω Polarization: RHCP (Right-Hand Circular Polarization) Covering Range: 360° Output VSWR: ≤2 Pear Axial Ratio: ≤3dB Gain: 37dB Noise Figure: 1.5dB Output VSWR: ≤2 Voltage: 3.3V ~ 16V DC Current: 13mA Connector: SMA male Operating & storage temperature: -40℃ ~ +85℃ Waterproof: IP67 Color: Black Material: plastic Package Contents: 1 * Quadrifilar Helix antenna Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.