Digital intermediate frequency receiver

The invention belongs to the field of ultra-short wave receivers and discloses a digital intermediate frequency receiver, comprising a radio frequency processing module, a mixer, an intermediate frequency processing module, a baseband processing module and a frequency synthesizer module, wherein an input end of the radio frequency processing module is electrically connected with an output end of an external antenna. The signal output end of the radio frequency processing module is electrically connected with the radio frequency input end obtained by the mixer, the signal output end of the mixer is electrically connected with the signal input end of the intermediate frequency processing module, and the signal output end of the intermediate frequency processing module is electrically connected with the signal input end of the baseband processing module. The local oscillator signal output terminal of the frequency synthesizer module is electrically connected with the local oscillator signal input terminal of the