Does Maxim have a GPS L1 receiver chip in the 1518-1559MHz band?
The closest product we have is a GNSS RF front end IC, the MAX2771 with an LO tuning range of 1525 – 1610 MHz. The IF filter can be programmed as a bandpass filter with an IF center frequency of 7 MHz which would allow reception of a signal centered at 1518 MHz depending on the signal bandwidth. One other alternative would be the MAX2121 device which is is an L-band satellite receiver with a tuning range of 925 – 2175 MHz. It has an 8 dB noise figure so an external LNA would be required and it does not include integrated ADCs.