Research of Parasitic Radiation from Multi-Layer Substrates of Printed Circuit Boards

Theme: " Research of Parasitic Radiation from Multi-Layer Substrates of Printed Circuit Boards". The volume of the graduation qualifying work (GQW) is 54 pages, in the work there are 18 drawings and one table is given. The bibliography consists of 17 sources. GQW consists of several sections, such as: introduction, then there are four chapters, followed by a conclusion and a list of used literature. Introduction briefly tells the relevance of the chosen topic, justifies interest in this issue. The first chapter contains the history of the issue on the origin and development of printed circuit boards (PCBs) in the technological world, the relevance of the chosen topic, and provides an overview of the development of this issue in our time. The chapter contains a brief analysis of monographs and literature, articulates goals and lists the tasks of this study. The second chapter consists of a review of the designs of various multilayer PCBs, their shortcomings and advantages. The PCBs differences in physical features as well as structural and technological differences are presented. Briefly reviewed boards with different bases, flexible PCBs and their differences from multi-layer boards. The possibility of manufacturing high-frequency multilayer PCBs and their suitability for use are considered, problems are given in the design and manufacture of such boards. The third chapter describes the methods of studying PCBs and their substrates, contains an idea of a new modified PCBs with a suspended substrate and reveals its features different from other boards. The fourth chapter is devoted to simulation of stray radiation patterns using computer programs MathCAD and AWR Design Environment, an analysis of the data obtained and results of computer simulation of parasitic radiation of the edges of the PCBs. In conclusion, the results of the study of parasitic radiation are collected, conclusions are drawn and recommendations for the choice of PCBs thicknesses are given.