GPS + 4G mushroom antenna.   (i)GPS Dielectric Antenna Center Frequency(MHz):1575.42±3 VSWR<1.5:1 Bandwidth(MHz):±5 Impedance(Ω):50 Peak Gain >3dBi Based on 7cm×7cm ground plane Gain Coverage >-4dBi at –90°<0 <+90°(over 75% Volume)