1. Working frequency: receive GPS-L1, L2, GLONASS-L, L2 and BDS-B1, B3 frequency signals;
2. Polarization mode: right-handed circular polarization;
3. Antenna gain: zenith≥ 3.5dbi;
15-degree elevation gain≥-4dbi;
4. Direction diagram: azimuth 0°~ 360° (roundness: ±1.5dB, elevation angle ≥10°)
Elevation angle: 5°~ 90°
5. Axial ratio: ≤2.5dB;
6. Standing wave: ≤1.5dB;
7. Impedance: 50Ω;
8. Antenna isolation: ≥25dB;
9. Interface: SMA interface;
10. High temperature resistance: It can work at a temperature of 250°C for no less than 1min