The ANT1028 from RFM Integrated Device is a GPS/GNSS Antenna with Frequency 1575.42 MHz (GPS) / 1602 MHz (GLONASS) / 1561.098 MHz (BEIDOU), Gain 0 dBi (GPS) / 1.5 dBi (GLONASS) / 2 dBi (BEIDOU), Impedance 50 Ohms, Bandwidth 39 MHz, Return Loss -10 dB. Tags: Patch, Ceramic, PCB. More details for ANT1028 can be seen below.