Design On DBF Multi-channel Broadband Digital Receiver

Digital array radar has incomparable superiority over traditional radar and will be able to meet the demands of modern war on information acquisition and detection equipment, so increasingly becoming the mainstream of the development of radar.Digital receiver is the inevitable choice to satisfy all rigor performance of digital array radar. Many companies and research centers attach importance to this field. This thesis focused on the study of multi-channel intermediate frequency sampling digital receiver for one digital array radar. The scheme for design multi-channel intermediate frequency sampling digital receiver for DBF radar is introduced in this paper. The analog I/Q demodulation is replaced by direct IF sampling and digital I/Q demodulation. The key design techniques of the receiver are analyzed in detail, The test results are also given in the paper.