Microstrip Filters for RF / Microwave Applications

Jia-Sheng Hong, PhD, is a senior faculty member in the Department of Electrical, Electronic, and Computer Engineering at Heriot-Watt University, Edinburgh, United Kingdom, where he leads a research group on advanced RF/microwave device technologies. Previously, he was involved with microwave applications of high-temperature superconductors, EM modeling, and circuit optimization at the University of Birmingham.

• Preface to the Second Edition. Preface to the First Edition.1 Introduction.2 Network Analysis.2.1 Network Variables.2.2 Scattering Parameters.2.3 Short-Circuit Admittance Parameters.2.4 Open-Circuit Impedance Parameters.2.5 ABCD Parameters.2.6 Transmission-Line Networks.2.7 Network Connections.2.8 Network Parameter Conversions.2.9 Symmetrical Network Analysis.2.10 Multiport Networks.2.11 Equivalent and Dual Network.2.12 Multimode Networks.3 Basic Concepts and Theories of Filters.3.1 Transfer Functions.3.2 Lowpass Prototype Filters and Elements.3.3 Frequency and Element Transformations.3.4 Immittance Inverters.3.5 Richards’ Transformation and Kuroda Identities.3.6 Dissipation and Unloaded Quality Factor.4 Transmission Lines and Components.4.1 Microstrip Lines.4.2 Coupled Lines.4.3 Discontinuities and Components.4.4 Other Types of Microstrip Lines.4.5 Coplanar Waveguide (CPW).4.6 Slotlines.5 Lowpass and Bandpass Filters.5.1 Lowpass Filters.5.2 Bandpass Filters.6 Highpass and Bandstop Filters.6.1 Highpass Filters.6.2 Bandstop Filters.7 Coupled-Resonator Circuits.7.1 General Coupling Matrix for Coupled-Resonator Filters.7.2 General Theory of Couplings.7.3 General Formulation for Extracting Coupling Coefficient k.7.4 Formulation for Extracting External Quality Factor Qe.7.5 Numerical Examples.7.6 General Coupling Matrix Including Source and Load.8 CAD for Low-Cost and High-Volume Production.8.1 Computer-Aided Design (CAD) Tools.8.2 Computer-Aided Analysis (CAA).8.3 Filter Synthesis by Optimization.8.4 CAD Examples.9 Advanced RF/Microwave Filters.9.1 Selective Filters with a Single Pair of Transmission Zeros.9.2 Cascaded Quadruplet (CQ) Filters.9.3 Trisection and Cascaded Trisection (CT) Filters.9.4 Advanced Filters with Transmission-Line Inserted Inverters.9.5 Linear-Phase Filters.9.6 Extracted Pole Filters.9.7 Canonical Filters.9.8 Multiband Filters.10 Compact Filters and Filter Miniaturization.10.1 Miniature Open-Loop and Hairpin Resonator Filters.10.2 Slow-Wave Resonator Filters.10.3 Miniature Dual-Mode Resonator Filters.10.4 Lumped-Element Filters.10.5 Miniature Filters Using High Dielectric-Constant Substrates.10.6 Multilayer Filters.11 Superconducting Filters.11.1 High-Temperature Superconducting (HTS) Materials.11.2 HTS Filters for Mobile Communications.11.3 HTS Filters for Satellite Communications.11.4 HTS Filters for Radio Astronomy and Radar.11.5 High-Power HTS Filters.11.6 Cryogenic Package.12 Ultra-Wideband (UWB) Filters.12.1 UWB Filters with Short-Circuited Stubs.12.2 UWB-Coupled Resonator Filters.12.3 Quasilumped Element UWB Filters. 12.4 UWB Filters Using Cascaded Miniature High- And Lowpass Filters.12.5 UWB Filters with Notch Band(s).13 Tunable and Reconfigurable Filters.13.1 Tunable Combline Filters.13.2 Tunable Open-Loop Filters without Via-Hole Grounding.13.3 Reconfigurable Dual-Mode Bandpass Filters.13.4 Wideband Filters with Reconfigurable Bandwidth.13.5 Reconfigurable UWB Filters.13.6 RF MEMS Reconfigurable Filters.13.7 Piezoelectric Transducer Tunable Filters.13.8 Ferroelectric Tunable Filters.Appendix: Useful Constants and Data.A.1 Physical Constants.A.2 Conductivity of Metals at 25◦C (298K).A.3 Electical Resistivity ρ in 10−8 m of Metals.A.4 Properties of Dielectric Substrates.Index.