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Methodology for setting up of technological process for microwave modules manufacturing based on multilayer LTCC structures and its testing on pilot batch

Keywords:

P.A. Tushnov – Main Technologist, PJSC «Radiofizika» (Moscow) A.V. Nevokshenov – Head of Department, PJSC «Radiofizika» (Moscow) A.V. Kazakov – Technologist, PJSC «Radiofizika» (Moscow) A.V. Golubev – Engineer, PJSC «Radiofizika» (Moscow)


The article examines ways to improve the efficiency of the APAA receiver-transmitter modules (RTM) by implementing design-layout and design-engineering solutions using technology of Low Temperature Cofired Ceramic (LTCC). Authors highlight carrying out of technological research in the process of integrated functional unit (IFU) production based on multilayer LTCC structure for the X band RTM output amplifier of power (OAP). We proposed a method for development of manufacturing process of multilayer LTCC structure, allowing defining the required set of parameters with minimal time consumption and costs for manufacturing of tools. Algorithms of step-by-step technology creation aimed at minimization of technical and time resources are presented. The article gives estimation of potentially achievable range of dimensional tolerances and flat surface accuracy tolerances of the multilayer LTCC structure that can be used in the development of microwave elements topology and specification of tolerances for board size. Design solutions are tested for performance of electrical, mechanical and thermal interfaces, operational requirements are met. It is shown that the tests of IFU output amplifier of power created using developed technology confirm the possibility of using multilayer boards for serial production of microwave X band devices. The results of technological research and tests obtained during experimental production and testing are analyzed and presented in tables and charts. We provide photos of tools for firing, IFU board, contacting device and X band RTM developed by PJSC «Radiofizika», as well as brief description of IGU, obtained during tests. It was observed that technological research contributes to the achievement of technological efficiency in the production of pilot samples, and allow practicing of technological processes for subsequent serial production of APAA RTM.
References:

 

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