Abstract: Based on the application background of passive radar seeker, a design scheme of miniaturized UWB Double Band RF front-end Receiver module is proposed. utilize integrated SIP packaging circuits and 3D chip packaging module, introduce vertical interconnection technology and multichip integration to complete the design of the miniaturization and high integration module, Improved the isolation between channels and reduced signal interference of digital analog mixed circuits, It has the characteristics of small size and light weight. Test results show that this system can achieve desired design features with noise figure ≤8 dB, dynamic range≥90 dB, channel isolation ≥60 dB.