Microwave ring circuits and related structures

Library	Item Barcode	Call Number	Material Type	Item Category 1	Status
Searching... PSZ JB	30000010060040	TK7876 C424 2004	Open Access Book	Book	Searching... Unknown
Searching... PSZ KL	30000010070235	TK7876 C424 2004	Open Access Book	Book	Searching... Unknown

The definitive text on microwave ring circuits-now better than ever
For the past three decades, the ring resonator has been widely used in such applications as measurements, filters, oscillators, mixers, couplers, power dividers/combiners, antennas, and frequency-selective surfaces, to name just a few. The field has continued to expand, with many new analyses, models, and applications recently reported.
Microwave Ring Circuits and Related Structures has long been the only text fully dedicated to the treatment of ring resonators. The second edition has been thoroughly revised to reflect the most current developments in the field. In addition to updating all the original material, the authors have added extensive new coverage on:
* A universal model for both rectangular and circular ring configurations
* Applications of ring structures for all types of planar circuits
* A new transmission line analysis
* An abundance of new applications in bandpass and bandstop filters, couplers, oscillators, and antennas
While retaining all the features that made the original text so useful to both students and teachers in the field, the second edition seeks to introduce the analysis and models of ring resonators and to apply them to both the old and the new applications, including microstrip, slotline, coplanar waveguide, and waveguide transmission lines. Based on dissertations and papers published by graduate students, scholars, and research associates at A&M University, Microwave Ring Circuits and Related Structures, Second Edition is sure to be a valuable addition to both engineering classrooms and research libraries in the field.

Author Notes

Kai Chang, PhD, is the Raytheon E-Systems Endowed Professor in the Department of Electrical Engineering at Texas A&M University where he teaches and performs research in microwave devices, circuits, and antennas
Lung-Hwa Hsieh is a doctoral student at Texas A&M University. He has authored more than fifteen papers on microwave ring circuits

Preface	p. xi
1 Introduction	p. 1
1.1 Background and Applications	p. 1
1.2 Transmission Lines and Waveguides	p. 4
1.3 Organization of the Book	p. 4
2 Analysis and Modeling of Ring Resonators	p. 5
2.1 Introduction	p. 5
2.2 Simple Model	p. 6
2.3 Field Analyses	p. 7
2.3.1 Magnetic-Wall Model	p. 7
2.3.2 Degenerate Modes of the Resonator	p. 9
2.3.3 Mode Chart for the Resonator	p. 11
2.3.4 Improvement of the Magnetic-Wall Model	p. 11
2.3.5 Simplified Eigenequation	p. 13
2.3.6 A Rigorous Solution	p. 14
2.4 Transmission-Line Model	p. 16
2.4.1 Coupling Gap Equivalent Circuit	p. 16
2.4.2 Transmission-Line Equivalent Circuit	p. 22
2.4.3 Ring Equivalent Circuit and Input Impedance	p. 25
2.4.4 Frequency Solution	p. 27
2.4.5 Model Verification	p. 29
2.4.6 Frequency Modes for Ring Resonators	p. 29
2.4.7 An Error in Literature for One-Port Ring Circuit	p. 32
2.4.8 Dual Mode	p. 34
2.5 Ring Equivalent Circuit in Terms of G, L, C	p. 35
2.5.1 Equivalent Lumped Elements for Closed- and Open-Loop Microstrip Ring Resonator	p. 36
2.5.2 Calculated and Experimental Results	p. 40
2.6 Distributed Transmission-Line Model	p. 40
2.6.1 Microstrip Dispersion	p. 41
2.6.2 Effect of Curvature	p. 44
2.6.3 Distributed-Circuit Model	p. 45
References	p. 52
3 Modes, Perturbations, and Coupling Methods of Ring Resonators	p. 55
3.1 Introduction	p. 55
3.2 Regular Resonant Modes	p. 55
3.3 Forced Resonant Modes	p. 58
3.4 Split Resonant Modes	p. 61
3.4.1 Coupled Split Modes	p. 63
3.4.2 Local Resonant Split Modes	p. 64
3.4.3 Notch Perturbation Split Modes	p. 66
3.4.4 Patch Perturbation Split Modes	p. 67
3.5 Further Study of Notch Perturbations	p. 67
3.6 Split (Gap) Perturbations	p. 70
3.7 Coupling Methods for Microstrip Ring Resonators	p. 75
3.8 Effects of Coupling Gaps	p. 77
3.9 Enhanced Coupling	p. 81
3.10 Uniplanar Ring Resonators and Coupling Methods	p. 85
3.11 Perturbations in Uniplanar Ring Resonators	p. 90
References	p. 93
4 Electronically Tunable Ring Resonators	p. 97
4.1 Introduction	p. 97
4.2 Simple Analysis	p. 98
4.3 Varactor Equivalent Circuit	p. 99
4.4 Input Impedance and Frequency Response of the Varactor-Tuned Microstrip Ring Circuit	p. 103
4.5 Effects of the Package Parasitics on the Resonant Frequency	p. 109
4.6 Experimental Results for Varactor-Tuned Microstrip Ring Resonators	p. 112
4.7 Double Varactor-Tuned Microstrip Ring Resonator	p. 115
4.8 Varactor-Tuned Uniplanar Ring Resonators	p. 117
4.9 Piezoelectric Transducer Tuned Microstrip Ring Resonator	p. 124
References	p. 125
5 Electronically Switchable Ring Resonators	p. 127
5.1 Introduction	p. 127
5.2 PIN Diode Equivalent Circuit	p. 128
5.3 Analysis for Electronically Switchable Microstrip Ring Resonators	p. 130
5.4 Experimental and Theoretical Results for Electronically Switchable Microtrip Ring Resonators	p. 131
5.5 Varactor-Tuned Switchable Microstrip Ring Resonators	p. 134
References	p. 138
6 Measurement Applications Using Ring Resonators	p. 139
6.1 Introduction	p. 139
6.2 Dispersion, Dielectric Constant, and Q-Factor Measurements	p. 139
6.3 Discontinuity Measurements	p. 145
6.4 Measurements Using Forced Modes or Split Modes	p. 147
6.4.1 Measurements Using Forced Modes	p. 148
6.4.2 Measurements Using Split Modes	p. 149
References	p. 152
7 Filter Applications	p. 153
7.1 Introduction	p. 153
7.2 Dual-Mode Ring Bandpass Filters	p. 153
7.3 Ring Bandstop Filters	p. 161
7.4 Compact, Low Insertion Loss, Sharp Rejection, and Wideband Bandpass Filters	p. 164
7.5 Ring Slow-Wave Bandpass Filters	p. 171
7.6 Ring Bandpass Filters with Two Transmission Zeros	p. 179
7.7 Pizoeletric Transducer-Tuned Bandpass Filters	p. 186
7.8 Narrow Band Elliptic-Function Bandpass Filters	p. 187
7.9 Slotline Ring Filters	p. 188
7.10 Mode Suppression	p. 191
References	p. 193
8 Ring Couplers	p. 197
8.1 Introduction	p. 197
8.2 180[degree] Rat-Race Hybrid-Ring Couplers	p. 197
8.2.1 Microstrip Hybrid-Ring Couplers	p. 197
8.2.2 Coplanar Waveguide-Slotline Hybrid-Ring Couplers	p. 203
8.2.3 Asymmetrical Coplanar Strip Hybrid-Ring Couplers	p. 209
8.3 180[degree] Reverse-Phase Back-to-Back Baluns	p. 211
8.4 180[degree] Reverse-Phase Hybrid-Ring Couplers	p. 217
8.4.1 CPW-Slotline 180[degree] Reverse-Phase Hybrid-Ring Couplers	p. 217
8.4.2 Reduced-Size Uniplanar 180[degree] Reverse-Phase Hybrid-Ring Couplers	p. 223
8.4.3 Asymmetrical Coplanar Strip 180[degree] Reverse-Phase Hybrid-Ring Couplers	p. 226
8.5 90[degree] Branch-Line Couplers	p. 227
8.5.1 Microstrip Branch-Line Couplers	p. 227
8.5.2 CPW-Slotline Branch-Line Couplers	p. 231
8.5.3 Asymmetrical Coplanar Strip Branch-Line Couplers	p. 233
References	p. 238
9 Ring Magic-T Circuits	p. 241
9.1 Introduction	p. 241
9.2 180[degree] Reverse-Phase CPW-Slotline T-Junctions	p. 243
9.3 CPW Magic-Ts	p. 244
9.4 180[degree] Double-Sided Slotline Ring Magic-Ts	p. 254
9.5 180[degree] Uniplanar Slotline Ring Magic-Ts	p. 258
9.6 Reduced-Size Uniplanar Magic-Ts	p. 262
References	p. 270
10 Waveguide Ring Resonators and Filters	p. 271
10.1 Introduction	p. 271
10.2 Waveguide Ring Resonators	p. 272
10.2.1 Regular Resonant Modes	p. 276
10.2.2 Split Resonant Modes	p. 281
10.2.3 Forced Resonant Modes	p. 283
10.3 Waveguide Ring Filters	p. 285
10.3.1 Decoupled Resonant Modes	p. 287
10.3.2 Single-Cavity Dual-Mode Filters	p. 289
10.3.3 Two-Cavity Dual-Mode Filters	p. 292
References	p. 295
11 Ring Antennas and Frequency-Selective Surfaces	p. 297
11.1 Introduction	p. 297
11.2 Ring Antenna Circuit Model	p. 298
11.2.1 Approximations and Fields	p. 298
11.2.2 Wall Admittance Calculation	p. 300
11.2.3 Input Impedance Formulation for the Dominant Mode	p. 303
11.2.4 Other Reactive Terms	p. 305
11.2.5 Overall Input Impedance	p. 306
11.2.6 Computer Simulation	p. 306
11.3 Circular Polarization and Dual-Frequency Ring Antennas	p. 307
11.4 Slotline Ring Antennas	p. 308
11.5 Active Antennas Using Ring Circuits	p. 314
11.6 Frequency-Selective Surfaces	p. 319
11.7 Reflectarrays Using Ring Resonators	p. 322
References	p. 326
12 Ring Mixers, Oscillators, and Other Applications	p. 330
12.1 Introduction	p. 330
12.2 Rat-Race Balanced Mixers	p. 330
12.3 Slotline Ring Quasi-Optical Mixers	p. 333
12.4 Ring Oscillators	p. 334
12.5 Microwave Optoelectronics Applications	p. 342
12.6 Metamaterials Using Split-Ring Resonators	p. 347
References	p. 349
Index	p. 352

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Author Notes

Table of Contents