Research On Fuze Circuit Integration Based On LTCC Technology

With the development of modern warfare in the direction of all-round and informatization,weapon systems also need more extensive adaptability.Fuze,as a decisive control in weapon system,not only needs to meet the basic safety and fully reliable detonation function,but also needs to be integrated and miniaturized to meet the development needs of weapon system.In order to meet the above needs,thesis uses LTCC which has the characteristics of high integration and high environmental adaptability and high reliability to research the integrated form of electronic time fuze.Firstly,according to the different functions,the thesis divides the fuze circuit into four modules: power supply,trigger,ignition and safety.Thesis designs each module circuit,especially the ignition circuit which plays a decisive role in the fuze is designed in detail.Secondly,because the magnetic element of transformer is used in the firing circuit,its performance and size have a great influence on the performance of the whole circuit to a certain extent.In view of the fact that the integrated research needs smaller and better performance devices,according to the significant advantages of LTCC planar transformer,LTCC process is selected for design and implementation.According to the demand of the ignition circuit for the transformer,the design of the transformer is theoretically analyzed and simulated and optimized based on the four parameters of the coupling coefficient,the saturated magnetization current,the magnetization inductance and the distributed capacitance.A LTCC planar transformer with a volume of 10.14 ×9.91 × 2.54 mm and a high voltage output of more than 1500 V is designed.Then,the thesis conducts processing experiments on the obtained model,analyzes the causes of stratification and fragmentation in the production process,and proposes solutions.Then,the sintering of the transformer is completed.Finally,the integrated three-dimensional structure of the whole circuit is designed and simulated by LTCC technology,and a more miniaturized integrated fuze is obtained.