The AST - GNSS RF Downconverter is a high performance, wide bandwidth, programmable content chip, suitable for Multi Frequency, Multi Constellation GNSS receivers. It can be conveniently used to receive signals from GPS, GLONASS, NavIC, Galileo, BeiDou, QZSS and GAGAN in L1/L2/L5 bands.
The RF chip is a near-zero, complex IF down-conversion receiver.
The front end is highly integrated with an on-chip low noise amplifier (LNA), local oscillator, programmable gain blocks, single stage complex down-conversion, IF amplifier, wide dandwidth IF low pass filter and 2/5 bits analog-to-digital converter (ADC).
The on-chip PLL accepts a 16.369 MHz / 10 MHz reference clock. The Local oscillator is widely programmable to support down conversion of GNSS Signals in L1, L2, L5 frequency bands.Download Brochure