On The C-band Miniaturization And High Overload Broadband RF Front-end Technology

The research works are presented with the radio proximity fuze scientific projects,the design scheme of C-band miniaturization and anti-high-overload broadband RF front-end is presented in the missile telemetry systems and the prototype is finished and tested.The thesis is divided into two parts:First of all,An overall scheme of C-band miniaturization and anti-high-overload broadband RF front-end is designed from the system perspective for improving the precision requirements of radio proximity fuze of the guided munition.Secondly,A simulation design each compositions of C-band miniaturization and anti-high-overload broadband RF front-end is conducted based on decomposition of the overall scheme and the real objects and test results are given.Firstly,the basic theory and composition of the radio proximity fuze are described.The theoretical analysis of the precision requirements of the radio proximity fuze is made for the munitions,and the factors affecting the high precision and stability of the bombing are obtained.Then,based on the structure of the system distribution,combined with the high-load actual application environment,the corresponding circuit parts are structurally allocated,and the overall scheme of C-band miniaturization and high-overload broadband RF front-end is designed.Secondly,the circuit components of the C-band miniaturization and high-overload broadband RF front-end are discussed.The implementation of circuits such as power drive,circulator,slot antenna and mixer is given.On the basis of theoretical analysis,simulation on circulator and slot antenna by HFSS is performed.The simulation results show that the scheme design is feasible and effective.Finally,the C-band miniaturization high-overload broadband RF front-end performance is tested,and the whole machine is adjusted and verified by dynamic flight test.The test results show that the C-band miniaturization and high-overload broadband RF front-end design is designed.The solution and implementation path are reasonable and feasible,and can be applied to radio fuzes with high precision proximity requirements.