The YFGC018WWA from Quectel is a GPS/GNSS Antenna with Frequency 1559 to 1606 MHz, Gain -1.4 to 2.3 dBi (Peak), Efficiency 32.3 to 68.4%, Impedance 50 Ohms, Axial Ratio 13.08 to 20.51 dB. Tags: PCB, Ceramic, Patch, Embedded. More details for YFGC018WWA can be seen below.