Design And Implementation Of C Band Microwave Receiver Front-end

C band microwave receiver front-end is three port microwave receiving component, is an important component of the m odel of the r eceiving system, with large dynam ic range, high sensitivity, strong anti-interfe rence ability, sm all volume f eatures, its performance will directly influence the effect of the signal processing, the fi nal influence the operational performance of the whole weapon system.First of all, this th esis has carried on the detailed elaboration to the receiver stru cture, and a sim ple analysis o f the advantages and disadvantag es of each.Then accordin g to the requirement and the actual conditions, adopt a conversion superheterodyne architecture, consisting of C band m icrowave receiver fr ont-end bandpass filter, am plitude lim iter, attenuator, low noise amplifier, m ixer, if am plifier circuit, power sup ply c ircuit and oth er functional modules of the deta iled design, can m eet the design requirements of the results, realize the pretreatment of microwave signal received by the system -- receiving, time-sharing pre filtering, a mplification, m ixing, and the output of the interm ediate frequency signal to provide to the rear assembly function.At the same ti me, t he for mation process of C band microwave receiver fro nt-end prod ucts were d escribed in detail, the process of assem bly, debugging process focus on the C band microwave receiver front end are discussed.The results of the test de monstrate that the system has a good perform ance in the dynamic range, im age rejection, and contigu ty frequency reject ion. The electrical performances satisfy the target requirem ents. After verification by experim ent examination, the I product of stable work, reliable performance.