The ANT1020 from RFM Integrated Device is a GPS/GNSS Antenna with Frequency 1575.42 MHz (GPS) / 1561.098 MHz (BEIDOU), Gain -3 dB (GPS) / -1.2 dB (BEIDOU), Impedance 50 Ohms, Bandwidth 11 MHz, Return Loss -10 dB. Tags: Patch, Ceramic, PCB. More details for ANT1020 can be seen below.