1.1.6.6 EBG Structures and Microstrip Line Coupling -- 1.1.7 Reconfigurable EBG Structures -- 1.1.8 Resonant-Like EBG Structures -- 2. Planar Periodic Structures as Electromagnetic Bandgap Surfaces -- 2.1 Introduction -- 2.2 Proposed EBG Structure -- 2.3 Dispersion Diagrams -- 2.4 Measurement Technique for Characterizing EBG Structure -- 2.5 EBG Loaded Transmission Line -- 2.6 Equivalent Circuit Model -- 2.7 Conclusion -- 3. Compact Planar Periodic Structure as Band-Rejection Filter -- 3.1 Introduction -- 3.2 MMR UWB Filter -- 3.3 Band-Notched UWB Filter -- 3.3.1 Single Band-Notched UWB Filter