Design and Optimization of Low Pass Filter

CHAPTER I: INTRODUCTION: Duplexer, Duplexer Operation, Types of Duplexers and Objectives CHAPTER II: REVIEW OF LITERATURE: Filter Definition, The History of Filters in Telecommunication, Microwave Filters Applications, Filter networks, Filter Transfer function, 7 Filter Design Methods, Ideal Low-pass Filter Characteristics, The approximation Functions of Filter Response, Process of Filter Design by Insertion Loss Method, Low Pass Filter Prototypes, Frequency and Element Transformations, Richard¿s Transformation, and Kurodäs Identity. CHAPTER III: MATERIALS AND METHODS: RF Microstrip Filters, Types of Filters, Microstrip Lines, Microstrip Filter Design Considerations, Defected ground structure, Electromagnetic Bandgap Structures (EBGs), and Different Configurations of the DGS Unit Cell. CHAPTER IV: RESULTS AND DISCUSSION Proposed Compact Microstrip Low Pass Filter Based on DGS and Shaped Microstrip Line, Double Equilateral U-shaped DGS Low Pass Filter, First Proposed Compact Low Pass Filter, Simulation Results of the Equilateral U-Shaped DGS LPF, Simulation Results of the first Proposed LPF, Fabrication of the First Proposed Filter, Second Proposed Compact Low Pass Filter,