The ANT1027 from RFM Integrated Device is a GPS/GNSS Antenna with Frequency 1575.42 MHz (GPS) / 1602 MHz (GLONASS), Gain 0.5 dBi (GPS) / 2 dBi (GLONASS), Impedance 50 Ohms, Bandwidth 8 MHz, Return Loss -10 dB. Tags: Patch, Ceramic, PCB. More details for ANT1027 can be seen below.