{"product_id":"tunable-evanescent-mode-filters-isbn-9781394216802","title":"Tunable Evanescent-Mode Filters","description":"\u003cp\u003e\u003cb\u003eComprehensive resource presenting tunable evanescent-mode filters design principles, implementation technologies, and applications, with hardware demonstrations and illustrations to support concepts\u003c\/b\u003e \u003c\/p\u003e\u003cp\u003eCovering all recent advancements in the field, \u003ci\u003eTunable Evanescent-Mode Filters\u003c\/i\u003e discusses fundamentals and applications in tunable evanescent-mode filters with concepts supported by hardware demonstrations to help the reader design experiments, a variety of detailed illustrations to aid in reader comprehension, and worked-out examples to help connect theory to practice. \u003c\/p\u003e\u003cp\u003eThe book is divided into three parts. The first part introduces associated physics, providing background information on topics such as filter anatomy, coupling matrix and routing diagrams, evanescent-mode resonators, and more. The second part covers implementation, describing topics like printed circuit boards, silicon microfabrication, and injection molding. The last part covers applications and discusses a broad range of topics including absorptive bandstop filters, bandwidth and passband control, high-order and fractional-order evanescent-mode filters, advanced evanescent-mode filter structures, and phase-locked loop and balanced-balanced tunable filtering. \u003c\/p\u003e\u003cp\u003eWritten by two highly qualified academics with significant research experience in the field, \u003ci\u003eTunable Evanescent-Mode Filters\u003c\/i\u003e also explores topics such as: \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFilter examples, including Chebyshev bandpass filters and Butterworth bandstop filters, and coupling techniques, including external and inter-resonator coupling\u003c\/li\u003e\n\u003cli\u003eThe constant bandwidth coupling concept, covering BW variation versus T-line length and tuning range, as well as phase variation\u003c\/li\u003e\n\u003cli\u003eBandpass-to-Bandstop reconfigurable filters, covering the switching coupling structure\u003c\/li\u003e\n\u003cli\u003eSingle-ended (SE) and balanced (BAL) diplexers, covering the dual-mode diplexing concept and its architecture and resonant frequency misalignment\u003c\/li\u003e\n\u003cli\u003eMonitoring and control of silicone-based filters, covering spiral inductors and circuit optimization\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003ci\u003eTunable Evanescent-Mode Filters\u003c\/i\u003e is a one-of-a-kind and completely up-to-date reference on the subject for both beginners in tunable RF systems looking for learning the fundamentals, as well as advanced researchers who are interested in the most effective techniques and latest developments in the field. \u003c\/p\u003e\u003cp\u003eAbout the Authors xiii\u003c\/p\u003e \u003cp\u003ePreface xiv\u003c\/p\u003e \u003cp\u003eAcknowledgments xvi\u003c\/p\u003e \u003cp\u003eList of Abbreviations xviii\u003c\/p\u003e \u003cp\u003eAbout the Companion Website xx\u003c\/p\u003e \u003cp\u003e\u003cb\u003ePart I Principles 1\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e\u003cb\u003e1 Background 3\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e1.1 Introduction 3\u003c\/p\u003e \u003cp\u003e1.1.1 Filters Necessity 3\u003c\/p\u003e \u003cp\u003e1.1.2 Alternative Filtering Methods 4\u003c\/p\u003e \u003cp\u003e1.2 Filter Anatomy and Representation 5\u003c\/p\u003e \u003cp\u003e1.2.1 The Basic Coupling Matrix (\u003ci\u003eM \u003c\/i\u003eMatrix) 5\u003c\/p\u003e \u003cp\u003e1.2.2 Coupling-Routing Diagrams 8\u003c\/p\u003e \u003cp\u003e1.2.3 Additions to the Coupling Matrix for Synthesis of Advanced and Practical Filter Responses 10\u003c\/p\u003e \u003cp\u003e1.2.3.1 Positive and Negative Coupling Values 10\u003c\/p\u003e \u003cp\u003e1.2.3.2 Finite Resonator Quality Factors 11\u003c\/p\u003e \u003cp\u003e1.2.3.3 Resonator Frequency Tuning 13\u003c\/p\u003e \u003cp\u003e1.2.3.4 Non-Resonating Nodes 13\u003c\/p\u003e \u003cp\u003e1.2.3.5 Complex Impedance Loads 16\u003c\/p\u003e \u003cp\u003e1.3 Tunable Resonators in Filters 20\u003c\/p\u003e \u003cp\u003e1.3.1 Planar Tunable Resonators 21\u003c\/p\u003e \u003cp\u003e1.3.2 Ferrimagnetic Tunable Resonators 22\u003c\/p\u003e \u003cp\u003e1.3.3 Evanescent-Mode 3-D Tunable Resonators 22\u003c\/p\u003e \u003cp\u003e\u003cb\u003e2 Evanescent-Mode Resonators 25\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e2.1 Physical Structure 25\u003c\/p\u003e \u003cp\u003e2.2 Analysis 26\u003c\/p\u003e \u003cp\u003e2.2.1 Coaxial Cable Approximation 26\u003c\/p\u003e \u003cp\u003e2.2.1.1 Unloaded Quality Factor 28\u003c\/p\u003e \u003cp\u003e2.2.2 Tapered Resonator Model 30\u003c\/p\u003e \u003cp\u003e2.2.2.1 Frequency Tuning Ratio 34\u003c\/p\u003e \u003cp\u003e2.2.3 Tuning Range and Quality Factor Co-optimization 37\u003c\/p\u003e \u003cp\u003e2.3 Coupling Techniques 38\u003c\/p\u003e \u003cp\u003e2.3.1 External Coupling 38\u003c\/p\u003e \u003cp\u003e2.3.2 Inter-Resonator Coupling 43\u003c\/p\u003e \u003cp\u003e2.4 Coupling Values Polarity 44\u003c\/p\u003e \u003cp\u003e2.4.1 External Coupling Polarity 44\u003c\/p\u003e \u003cp\u003e2.4.2 Inter-Resonator Coupling Polarity 45\u003c\/p\u003e \u003cp\u003e2.5 Advanced Evanescent-Mode Structures 48\u003c\/p\u003e \u003cp\u003e2.5.1 Dual-Mode Resonators 48\u003c\/p\u003e \u003cp\u003e2.5.2 Fractional Mode Resonators 49\u003c\/p\u003e \u003cp\u003e2.6 Filter Examples 51\u003c\/p\u003e \u003cp\u003e2.6.1 Chebyshev Bandpass Filter 51\u003c\/p\u003e \u003cp\u003e2.6.2 Butterworth Bandstop Filter 53\u003c\/p\u003e \u003cp\u003e\u003cb\u003ePart II Implementation 55\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e\u003cb\u003e3 Printed Circuit Board Technology 57\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e3.1 Evanescent-Mode Resonator Structure 57\u003c\/p\u003e \u003cp\u003e3.1.1 Practical Considerations 58\u003c\/p\u003e \u003cp\u003e3.2 Tunable Membrane 60\u003c\/p\u003e \u003cp\u003e3.2.1 Piezoelectric Disk Tuners 60\u003c\/p\u003e \u003cp\u003e3.2.2 Contactless Mechanical Actuators 61\u003c\/p\u003e \u003cp\u003e\u003cb\u003e4 Silicon Microfabrication 65\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e4.1 Generic Structure 65\u003c\/p\u003e \u003cp\u003e4.2 MEMS Tuner Design 66\u003c\/p\u003e \u003cp\u003e4.3 Microfabrication Process 68\u003c\/p\u003e \u003cp\u003e4.3.1 MEMS Tuner Microfabrication 68\u003c\/p\u003e \u003cp\u003e4.3.2 Evanescent-Mode Resonator Microfabrication 69\u003c\/p\u003e \u003cp\u003e4.3.3 Bias Electrode Microfabrication 69\u003c\/p\u003e \u003cp\u003e4.3.4 Filter Assembly 70\u003c\/p\u003e \u003cp\u003e4.4 Mechanical Model and Power Handling 72\u003c\/p\u003e \u003cp\u003e\u003cb\u003e5 Injection Molding 77\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e5.1 Manufacturing Technology 77\u003c\/p\u003e \u003cp\u003e5.1.1 Device Concept 77\u003c\/p\u003e \u003cp\u003e5.1.2 Injection Molding Technology 78\u003c\/p\u003e \u003cp\u003e5.1.3 Material Selection 80\u003c\/p\u003e \u003cp\u003e5.1.4 Design for Moldability 81\u003c\/p\u003e \u003cp\u003e5.2 Resonator and Filter RF Design 82\u003c\/p\u003e \u003cp\u003e5.2.1 Resonator 82\u003c\/p\u003e \u003cp\u003e5.2.2 Filter 83\u003c\/p\u003e \u003cp\u003e5.3 Fabrication and Measurements 85\u003c\/p\u003e \u003cp\u003e5.3.1 Resonator 85\u003c\/p\u003e \u003cp\u003e5.3.2 Filter Performance Measurements 87\u003c\/p\u003e \u003cp\u003e5.3.3 Power Handling 90\u003c\/p\u003e \u003cp\u003e5.4 Discussion 93\u003c\/p\u003e \u003cp\u003e5.5 Conclusion 95\u003c\/p\u003e \u003cp\u003e5.6 How to Choose the Right Manufacturing Technology 95\u003c\/p\u003e \u003cp\u003e5.7 How to Choose the Right Actuator for the Filter 96\u003c\/p\u003e \u003cp\u003e\u003cb\u003ePart III Applications 99\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e\u003cb\u003e6 Absorptive Bandstop Filters 101\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e6.1 Design Principles of Absorptive Filters 101\u003c\/p\u003e \u003cp\u003e6.1.1 Analysis of a Two-Pole Absorptive Bandstop Filter 101\u003c\/p\u003e \u003cp\u003e6.1.2 W-Band Absorptive Bandstop Filter 104\u003c\/p\u003e \u003cp\u003e6.1.2.1 Filter Design 104\u003c\/p\u003e \u003cp\u003e6.1.2.2 Fabrication and Measurements 107\u003c\/p\u003e \u003cp\u003e6.2 Triplet Quasi-absorptive Topology 109\u003c\/p\u003e \u003cp\u003e6.2.1 Quasi-absorptive Filter Design and Implementation 111\u003c\/p\u003e \u003cp\u003e6.2.1.1 Measured Results 114\u003c\/p\u003e \u003cp\u003e\u003cb\u003e7 Bandwidth and Passband Control 115\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e7.1 Bandwidth Control for Bandpass Filters 115\u003c\/p\u003e \u003cp\u003e7.1.1 Filter Design 116\u003c\/p\u003e \u003cp\u003e7.1.1.1 Bandwidth Variation 116\u003c\/p\u003e \u003cp\u003e7.1.1.2 Quality Factor Impact 118\u003c\/p\u003e \u003cp\u003e7.1.1.3 Impedance Matching 119\u003c\/p\u003e \u003cp\u003e7.1.1.4 Simulated Results 120\u003c\/p\u003e \u003cp\u003e7.1.2 Filter Implementation 122\u003c\/p\u003e \u003cp\u003e7.2 BSF Bandwidth Control 126\u003c\/p\u003e \u003cp\u003e7.2.1 Constant Bandwidth Coupling Concept 128\u003c\/p\u003e \u003cp\u003e7.2.1.1 BWVariation Versus T-Line Length and Tuning Range 131\u003c\/p\u003e \u003cp\u003e7.2.1.2 Phase Variation 134\u003c\/p\u003e \u003cp\u003e7.2.2 Constant Bandwidth Filter Design 136\u003c\/p\u003e \u003cp\u003e7.2.2.1 External Coupling 136\u003c\/p\u003e \u003cp\u003e7.2.2.2 External Coupling Structures: Polarity Design 138\u003c\/p\u003e \u003cp\u003e7.2.2.3 Inter-Resonator Coupling 140\u003c\/p\u003e \u003cp\u003e7.2.3 Fabrication and Measurements 141\u003c\/p\u003e \u003cp\u003e7.2.3.1 Constant \u003ci\u003eFBW \u003c\/i\u003eFilter 142\u003c\/p\u003e \u003cp\u003e7.2.3.2 Constant \u003ci\u003eABW \u003c\/i\u003eFilter 143\u003c\/p\u003e \u003cp\u003e7.2.3.3 Four-Pole Filter 144\u003c\/p\u003e \u003cp\u003e\u003cb\u003e8 High-Order and Fractional-Order Evanescent-Mode Filters 147\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e8.1 High-Order Evanescent-Mode Filters 147\u003c\/p\u003e \u003cp\u003e8.1.1 Independently Tunable Dual-Mode Evanescent-Mode Filter 147\u003c\/p\u003e \u003cp\u003e8.1.1.1 Resonator Design 148\u003c\/p\u003e \u003cp\u003e8.1.1.2 Filter Design 150\u003c\/p\u003e \u003cp\u003e8.1.1.3 Experimental Validation 151\u003c\/p\u003e \u003cp\u003e8.1.2 High Selectivity Dual-Mode Filters 152\u003c\/p\u003e \u003cp\u003e8.1.2.1 Resonator Design 154\u003c\/p\u003e \u003cp\u003e8.1.2.2 Constant Absolute Bandwidth BPF Filter 157\u003c\/p\u003e \u003cp\u003e8.1.2.3 Filter A: Implementation and Validation 160\u003c\/p\u003e \u003cp\u003e8.1.2.4 Filter B: Implementation and Validation 161\u003c\/p\u003e \u003cp\u003e8.1.2.5 Filter C: Implementation and Validation 162\u003c\/p\u003e \u003cp\u003e8.1.2.6 Filter D: Implementation and Validation 162\u003c\/p\u003e \u003cp\u003e8.1.3 Four-Wedge Evanescent-Mode Resonator 165\u003c\/p\u003e \u003cp\u003e8.1.3.1 Bandpass Filter Design 165\u003c\/p\u003e \u003cp\u003e8.1.3.2 Design Example 167\u003c\/p\u003e \u003cp\u003e8.2 Tunable Half-Mode SIW Filter 170\u003c\/p\u003e \u003cp\u003e\u003cb\u003e9 Advanced Evanescent-Mode Filter Structures 175\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e9.1 Bandpass-to-bandstop Reconfigurable Filter 175\u003c\/p\u003e \u003cp\u003e9.1.1 Bandpass-to-bandstop Filter Theory 176\u003c\/p\u003e \u003cp\u003e9.1.1.1 Coupling Structure to Switch \u003ci\u003eM\u003c\/i\u003e01 and \u003ci\u003eM\u003c\/i\u003e03 Simultaneously 177\u003c\/p\u003e \u003cp\u003e9.1.2 Bandpass-to-bandstop Reconfigurable Filter Design 179\u003c\/p\u003e \u003cp\u003e9.1.3 Measured Results 180\u003c\/p\u003e \u003cp\u003e9.2 Field-programmable Filter Array 184\u003c\/p\u003e \u003cp\u003e9.2.1 Positive-to-negative Coupling Structure 184\u003c\/p\u003e \u003cp\u003e9.2.2 Response Enhancements Enabled By Positive-to-negative Inter-Resonator Coupling 185\u003c\/p\u003e \u003cp\u003e9.2.2.1 Zero Net Coupling State Enhancement Using Destructive Interference 185\u003c\/p\u003e \u003cp\u003e9.2.2.2 Local Stopband Attenuation Enhancement Technique 187\u003c\/p\u003e \u003cp\u003e9.2.3 Resonator Array Design and Fabrication 188\u003c\/p\u003e \u003cp\u003e9.2.4 Measured Results 189\u003c\/p\u003e \u003cp\u003e\u003cb\u003e10 Passive Applications 195\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e10.1 Impedance Tuner 195\u003c\/p\u003e \u003cp\u003e10.1.1 Design and Fabrication 195\u003c\/p\u003e \u003cp\u003e10.1.2 Measured Results 197\u003c\/p\u003e \u003cp\u003e10.2 Single-ended (SE) and Balanced (BAL) Diplexers 198\u003c\/p\u003e \u003cp\u003e10.2.1 Dual-Mode Diplexing Concept 198\u003c\/p\u003e \u003cp\u003e10.2.1.1 Diplexing Architecture 198\u003c\/p\u003e \u003cp\u003e10.2.1.2 Resonant Frequency Misalignment 199\u003c\/p\u003e \u003cp\u003e10.2.1.3 Inter-Resonator Coupling 201\u003c\/p\u003e \u003cp\u003e10.2.2 SE–SE Diplexer Implementation and Measurements 201\u003c\/p\u003e \u003cp\u003e10.2.2.1 External Coupling 201\u003c\/p\u003e \u003cp\u003e10.2.2.2 Measured Results 201\u003c\/p\u003e \u003cp\u003e10.2.3 SE–BAL Diplexer Implementation and Measurements 202\u003c\/p\u003e \u003cp\u003e10.2.3.1 External Coupling 202\u003c\/p\u003e \u003cp\u003e10.2.3.2 Measured Results 203\u003c\/p\u003e \u003cp\u003e10.2.4 BAL–BAL Diplexer Implementation and Measurements 205\u003c\/p\u003e \u003cp\u003e10.2.4.1 External Coupling 205\u003c\/p\u003e \u003cp\u003e10.2.4.2 Measured Results 205\u003c\/p\u003e \u003cp\u003e10.3 Tunable Filtering Rat-race Couplers Based on Half- and Full-mode Evanescent-mode Resonators 207\u003c\/p\u003e \u003cp\u003e10.3.1 Design 207\u003c\/p\u003e \u003cp\u003e10.3.2 Full-mode Rat-race Coupler 209\u003c\/p\u003e \u003cp\u003e10.3.2.1 Experimental Validation 209\u003c\/p\u003e \u003cp\u003e10.3.3 Half-mode Rat-race Coupler 210\u003c\/p\u003e \u003cp\u003e10.3.3.1 Half-mode Structure 210\u003c\/p\u003e \u003cp\u003e10.3.3.2 Experimental Validation 211\u003c\/p\u003e \u003cp\u003e\u003cb\u003e11 Active Applications 215\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e11.1 Co-Design of Power Amplifiers and High-\u003ci\u003eQ \u003c\/i\u003eFilters 215\u003c\/p\u003e \u003cp\u003e11.1.1 Filter Design 216\u003c\/p\u003e \u003cp\u003e11.1.2 Transistor Characterization 217\u003c\/p\u003e \u003cp\u003e11.1.3 Matching Filter Design 217\u003c\/p\u003e \u003cp\u003e11.1.3.1 Fundamental and Harmonic Matchings 219\u003c\/p\u003e \u003cp\u003e11.1.4 PA Design 220\u003c\/p\u003e \u003cp\u003e11.1.5 Experimental Results 220\u003c\/p\u003e \u003cp\u003e11.1.6 Co-Design of PA and Three-Pole High-\u003ci\u003eQ \u003c\/i\u003eTunable Filter 222\u003c\/p\u003e \u003cp\u003e11.2 Phase-Locked Loop 224\u003c\/p\u003e \u003cp\u003e11.2.1 Frequency Synthesizer Architecture and Phase Noise Model 224\u003c\/p\u003e \u003cp\u003e11.2.2 Circuit Design and Optimizations 226\u003c\/p\u003e \u003cp\u003e11.2.2.1 Evanescent-Mode Cavity Resonator 226\u003c\/p\u003e \u003cp\u003e11.2.2.2 Voltage-Controlled Oscillator Design 226\u003c\/p\u003e \u003cp\u003e11.2.2.3 Phase-Locked Loop Design 227\u003c\/p\u003e \u003cp\u003e11.2.2.4 Measured Results 229\u003c\/p\u003e \u003cp\u003e11.3 Balanced–Balanced Tunable Filtering LNA 231\u003c\/p\u003e \u003cp\u003e11.3.1 Cavity Resonator-LNA Co-Design 231\u003c\/p\u003e \u003cp\u003e11.3.1.1 Evanescent-Mode Resonators 232\u003c\/p\u003e \u003cp\u003e11.3.1.2 LNA 232\u003c\/p\u003e \u003cp\u003e11.3.2 Implementation and Measured Results 233\u003c\/p\u003e \u003cp\u003e\u003cb\u003e12 Monitoring and Control 235\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e12.1 Monitoring and Control of PCB-based Resonators: Diplexer Example 235\u003c\/p\u003e \u003cp\u003e12.1.1 System Architecture 235\u003c\/p\u003e \u003cp\u003e12.1.1.1 Diplexer 236\u003c\/p\u003e \u003cp\u003e12.1.1.2 Resonators Monitoring and Control 237\u003c\/p\u003e \u003cp\u003e12.1.1.3 Spectrum Sensing 240\u003c\/p\u003e \u003cp\u003e12.1.2 Control Loop Analysis 242\u003c\/p\u003e \u003cp\u003e12.1.3 Design Details 242\u003c\/p\u003e \u003cp\u003e12.1.3.1 Diplexer Structure 242\u003c\/p\u003e \u003cp\u003e12.1.3.2 Oscillator and Frequency Counter 243\u003c\/p\u003e \u003cp\u003e12.1.3.3 Control Unit and Charge Pump 246\u003c\/p\u003e \u003cp\u003e12.1.4 Implementation and Measurements 247\u003c\/p\u003e \u003cp\u003e12.1.4.1 Implementation 247\u003c\/p\u003e \u003cp\u003e12.1.4.2 Monitoring Performance 248\u003c\/p\u003e \u003cp\u003e12.1.4.3 RF Performance 250\u003c\/p\u003e \u003cp\u003e12.1.4.4 Spectrum-aware Measurements 254\u003c\/p\u003e \u003cp\u003e12.2 Monitoring and Control of Silicon-based Filters 254\u003c\/p\u003e \u003cp\u003e12.2.1 Monitoring Concepts and Optimizations 255\u003c\/p\u003e \u003cp\u003e12.2.1.1 Inductive Proximity Sensing 255\u003c\/p\u003e \u003cp\u003e12.2.1.2 Circuit Optimization 257\u003c\/p\u003e \u003cp\u003e12.2.1.3 Spiral Inductor 261\u003c\/p\u003e \u003cp\u003e12.2.2 Control System Design 261\u003c\/p\u003e \u003cp\u003e12.2.3 Testbed Filter Design 263\u003c\/p\u003e \u003cp\u003e12.2.4 Implementation and Measurements 263\u003c\/p\u003e \u003cp\u003e12.2.4.1 Fabrication 263\u003c\/p\u003e \u003cp\u003e12.2.4.2 Sensing Feedback 265\u003c\/p\u003e \u003cp\u003e12.2.4.3 Filter Monitoring and Control 266\u003c\/p\u003e \u003cp\u003e12.3 Monitoring and Control Applications: Temperature Compensation 267\u003c\/p\u003e \u003cp\u003e12.3.1 Temperature Control 268\u003c\/p\u003e \u003cp\u003e12.3.1.1 Temperature Compensation System Implementation 268\u003c\/p\u003e \u003cp\u003e12.3.1.2 Room Temperature Filter Performance 268\u003c\/p\u003e \u003cp\u003e12.3.1.3 Temperature Compensation Performance 268\u003c\/p\u003e \u003cp\u003eReferences 275\u003c\/p\u003e \u003cp\u003eIndex 289\u003c\/p\u003e  \u003cp\u003e\u003cb\u003eDimitrios Peroulis\u003c\/b\u003e is the Senior Vice President for Purdue University Online and the Reilly Professor of Electrical and Computer Engineering at Purdue University, USA. He is an IEEE and IET Fellow and has co-authored over 450 journal and conference papers. \u003c\/p\u003e\u003cp\u003e\u003cb\u003eMohammad Abu Khater\u003c\/b\u003e was a research scientist at Purdue University working on adaptive RF front-ends and their applications. Currently, he is the founder and CEO of Philowave.   \u003c\/p\u003e\u003cp\u003e\u003cb\u003eComprehensive resource presenting tunable evanescent-mode filters design principles, implementation technologies, and applications, with hardware demonstrations and illustrations to support concepts\u003c\/b\u003e \u003c\/p\u003e\u003cp\u003eCovering all recent advancements in the field, \u003ci\u003eTunable Evanescent-Mode Filters\u003c\/i\u003e discusses fundamentals and applications in tunable evanescent-mode filters with concepts supported by hardware demonstrations to help the reader design experiments, a variety of detailed illustrations to aid in reader comprehension, and worked-out examples to help connect theory to practice. \u003c\/p\u003e\u003cp\u003eThe book is divided into three parts. The first part introduces associated physics, providing background information on topics such as filter anatomy, coupling matrix and routing diagrams, evanescent-mode resonators, and more. The second part covers implementation, describing topics like printed circuit boards, silicon microfabrication, and injection molding. The last part covers applications and discusses a broad range of topics including absorptive bandstop filters, bandwidth and passband control, high-order and fractional-order evanescent-mode filters, advanced evanescent-mode filter structures, and phase-locked loop and balanced-balanced tunable filtering. \u003c\/p\u003e\u003cp\u003eWritten by two highly qualified academics with significant research experience in the field, \u003ci\u003eTunable Evanescent-Mode Filters\u003c\/i\u003e also explores topics such as: \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFilter examples, including Chebyshev bandpass filters and Butterworth bandstop filters, and coupling techniques, including external and inter-resonator coupling\u003c\/li\u003e\n\u003cli\u003eThe constant bandwidth coupling concept, covering BW variation versus T-line length and tuning range, as well as phase variation\u003c\/li\u003e\n\u003cli\u003eBandpass-to-Bandstop reconfigurable filters, covering the switching coupling structure\u003c\/li\u003e\n\u003cli\u003eSingle-ended (SE) and balanced (BAL) diplexers, covering the dual-mode diplexing concept and its architecture and resonant frequency misalignment\u003c\/li\u003e\n\u003cli\u003eMonitoring and control of silicone-based filters, covering spiral inductors and circuit optimization\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003ci\u003eTunable Evanescent-Mode Filters\u003c\/i\u003e is a one-of-a-kind and completely up-to-date reference on the subject for both beginners in tunable RF systems looking for learning the fundamentals, as well as advanced researchers who are interested in the most effective techniques and latest developments in the field.\u003c\/p\u003e","brand":"Wiley-IEEE Press","offers":[{"title":"Default Title","offer_id":47990418014437,"sku":"NP9781394216802","price":145.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1842\/7735\/files\/9781394216802.jpg?v=1761787747","url":"https:\/\/k12savings.com\/products\/tunable-evanescent-mode-filters-isbn-9781394216802","provider":"K12savings","version":"1.0","type":"link"}