This paper introduces a fully integrated low power consumption radio receiver frontend circuit for a Compass(Beidou) and GPS dual mode dual channel system with 2.5 dB NF,1.02 mm~2 areas,and 8 mA of current in 0.18μm TSMC CMOS process.Except for a few passive components for input matching,other components such as an off-chip low noise amplifier or a balun are not required.With a non-tunable passive image rejection filter,the receiver frontend can achieve around 60 dB gain and 34 dB image rejection. This paper introduces a fully integrated low power consumption radio receiver frontend circuit for a Compass (Beidou) and GPS dual mode dual channel system with 2.5 dB NF, 1.02 mm ~ 2 areas, and 8 mA of current in 0.18 μm TSMC CMOS process. for a few passive components for input matching, other components such as an off-chip low noise amplifier or a balun are not required. Whith a non-tunable passive image rejection filter, the receiver frontend can achieve around 60 dB gain and 34 dB image rejection.