The YFGC020WWA from Quectel is a GPS/GNSS Antenna with Frequency 1559 to 1606 MHz, Gain -2.3 to 2.9 dBi (Peak), Efficiency 25.4 to 70.6%, Impedance 50 Ohms, Axial Ratio 11.56 to 19.86 dB. Tags: PCB, Ceramic, Patch, Embedded. More details for YFGC020WWA can be seen below.