Yaduvanshi / Parthasarathy Rectangular Dielectric Resonator Antennas

Theory and Design
1. Auflage 2016
ISBN: 978-81-322-2500-3
Verlag: Springer India
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 378 Seiten

This book covers resonating modes inside device and gives insights into antenna design, impedance and radiation patterns. It discusses how higher-order modes generation and control impact bandwidth and antenna gain. The text covers new approaches in antenna design by investigation hybrid modes, H_Z and E_Z fields available simultaneously, and analysis and modelling on modes with practical applications in antenna design. The book will be prove useful to students, researchers and professionals alike.

Dr. Rajveer S. Yaduvanshi is working as associate professor in the department of ECE  at Ambedkar Institute of Advanced Communication Technologies and Research Delhi for the last seven years. Before that he was working as senior scientific officer in Ministry of Defence, Government of India. He has a total of 31 years of experience in teaching and research. He is author of a book on MHD Antenna, Design and Applications and has published several papers in reputed journals and conferences. He has supervised 151 B.Tech projects, 11 MTech projects, and is currently supervising 7 Phd students. He holds an M. Tech degree from NIT Allahabad and a Phd from NSIT, Delhi (Delhi University). His research interests include design of MHD embedded antennas and analysis of higher modes in DRA .Dr. Harish Parthasarathy is working as professor in the department of ECE at , Netaji Subhas Institute of Technology. He is author of more than eleven books and has guided several Phd students. He holds his Phd and B. Tech degrees from IIT Delhi. His research involves antenna and signal processing with specialization in mathematical modeling.

Autoren/Hrsg.

Yaduvanshi, Rajveer S.

Parthasarathy, Harish

Inhaltsverzeichnis

1;Preface;5
2;Acknowledgments;12
3;Contents;13
4;About the Authors;17
5;1 Rectangular DRA Fundamental Background;18
5.1;Abstract;18
5.2;1.1 Introduction;18
5.3;1.2 History of DRA;19
5.4;1.3 Working Mechanism of RDRA;19
5.5;1.4 Antenna Radiation Parameters;21
5.6;1.5 Advantage of RDRA;21
5.7;1.6 Resonant Modes;21
5.8;1.7 Characterization of Resonant Modes;23
5.9;1.8 Magnetic Dipole Moment;25
5.10;1.9 Spring Resonator of Length L;25
5.11;References;26
6;2 Rectangular DRA Resonant Modes and Sources;28
6.1;Abstract;28
6.2;2.1 Introduction;28
6.3;2.2 Type of Modes (TE, TM, HEM);31
6.4;2.3 Solutions of Helmholtz Equation;32
6.5;2.4 Rectangular Waveguide Analysis;34
6.6;2.5 Two-Dimensional Resonator;37
6.7;2.6 Basic Mathematical Representation of Resonant Modes;38
6.8;2.7 Voltage Source Model;42
6.9;2.8 Resonant Modes Generation;44
6.10;2.9 MATLAB Simulated Results;46
6.11;Reference;49
7;3 Mathematical Analysis of Rectangular DRA;50
7.1;Abstract;50
7.2;3.1 Rectangular DRA with Homogeneous Medium;51
7.3;3.2 Rectangular DRA Mathematical Modeling;53
7.3.1;3.2.1 Model-1;53
7.3.2;3.2.2 Model-2;58
7.3.3;3.2.3 Model-3;62
7.3.4;3.2.4 Model-4;67
7.3.5;3.2.5 Basic Theory;69
8;4 Mathematical Analysis of Transcendental Equation in Rectangular DRA;73
8.1;Abstract;73
8.2;4.1 Case-1: Top and Bottom Walls as PMC and Rest of the Four Walls are PEC;76
8.3;4.2 Case-2;81
8.4;4.3 MATLAB Simulation Results;94
8.5;4.4 Resonant Frequency of RDRA for Experimentations;103
9;5 Mathematical Analysis of RDRA Amplitude Coefficients;119
9.1;Abstract;119
9.2;5.1 Introduction;119
9.3;5.2 Amplitude Coefficients Cmnp;120
9.4;5.3 RDRA Maxwell's Equation-Based Solution;122
9.5;5.4 RDRA Inhomogeneous Permittivity and Permeability;128
9.6;5.5 RDRA with Probe Current Excitation;134
9.7;5.6 RDRA Resonant Modes Coefficients in Homogeneous Medium;137
9.8;5.7 RDRA Modes with Different Feed Position;139
9.9;5.8 R, L, C Circuits and Resonant Modes;141
9.10;5.9 Resonant Modes Based on R, L, C Circuits;146
10;6 Mathematical Analysis of Radiation Pattern of RDRA;151
10.1;Abstract;151
10.2;6.1 Introduction;151
10.3;6.2 Radiation Pattern of RDRA Due to Probe Current i(t) and Probe Length dl;153
10.3.1;6.2.1 Radiation Pattern;155
10.4;6.3 Poynting Vector;156
10.5;6.4 Moat-Shaped RDRA Radiation Pattern;157
10.6;6.5 Quality Factor of RDRA;160
11;7 Rectangular DRA Higher-Order Modes and Experimentations;163
11.1;Abstract;163
11.2;7.1 Introduction to Higher Modes;164
11.3;7.2 Resonant Frequency and RDRA Structure;172
11.3.1;7.2.1 Fields in Rectangular DRA;174
11.4;7.3 Modes (Resonant) Mathematical Solution;181
11.5;7.4 Top-Loading RDRA;182
11.6;7.5 Simulated HFSS Results;183
11.7;7.6 Modes at Varying Heights of RDRA;184
11.8;7.7 Distortions Due to Overlap of Dipole Moment;184
11.9;7.8 Prototype and Anechoic Chamber Experimentations;184
11.10;7.9 Adjacent Modes Combination for Broadband Applications;185
11.11;7.10 Effect of Air Gap Between RDRA and Ground Plane;185
11.12;7.11 Effect of Asymmetrical Wells Inside RDRA;186
11.13;7.12 Effect of Moat Insertion Inside RDRA;186
11.14;7.13 Effect of a/b and d/b Aspect Ratio;187
11.15;Reference;195
12;8 RDRA Angular Excitation Mathematical Model and Resonant Modes;196
12.1;Abstract;196
12.2;8.1 Introduction;196
12.3;8.2 Angular Shift in Excitation;200
12.4;8.3 Radiation Pattern Based on Angle {{\varvec (\oslash}}_{{\bf 0}} ,{{\varvec {\phi}_{{\bf 0}}}} ) Variation in xy Plane;204
12.5;8.4 Replacing Probe with Slot of Finite Dimensions (Ls, Ws) at an Angle {{{{\varvec (}}{{\varvec \theta}}_{{\bf 0}}}} ,{{{\varvec \phi}_{{\bf 0}}}} );205
12.6;8.5 HFSS Computed Radiation Pattern with Shifted {{({\varvec \theta}_{{\varvec i}} ,{{\varvec \phi}_{{\varvec i}}}}} ) Slot Positions;207
12.7;8.6 Experimentations;208
13;9 Sensitivity Analysis of Rectangular DRA;214
13.1;Abstract;214
13.2;9.1 MATLAB Simulation;221
13.3;9.2 HFSS Simulations;222
13.3.1;9.2.1 HFSS Result;223
13.4;9.3 Radiation Pattern;225
14;10 Hybrid Modes in RDRA;226
14.1;Abstract;226
14.2;10.1 Introduction;226
14.3;10.2 Mathematical Model;229
14.4;10.3 Modes in Homogeneous Medium with Source Terms;233
14.5;10.4 Current Density in RDRA;234
14.6;10.5 E and H Fields;235
14.7;10.6 Mathematical Modeling of Hybrid Modes;236
14.8;10.7 General Solution of Hybrid Modes (HEM);240
14.9;10.8 HFSS Results;245
14.10;10.9 Prototype RDRA Results;247
15;11 Inhomogeneous Permittivity, Permeability, and Conductivity Solution in Rectangular DRA;248
15.1;Abstract;248
15.2;11.1 Introduction;248
15.3;11.2 Mathematical Model;249
15.4;11.3 Applications: Hybrid Modes Generation Inside RDRA Can Be Used for Polarization Diversity;265
15.4.1;11.3.1 RF Measurements for Antenna Parameters;265
16;12 Case Studies;266
16.1;Abstract;266
16.2;12.1 Structure and Hardware Experimentations;266
16.2.1;12.1.1 RDRA Antenna Results;268
16.3;12.2 RDRA with Manganese--Manganese Material as Dielectric;271
16.4;12.3 Dual-Feed RDRA with Measurements Results;284
16.5;12.4 Isolated and Grounded RDRA;294
16.5.1;12.4.1 S11 Plot;294
16.5.2;12.4.2 Gain Plot;296
16.5.3;12.4.3 Impedance (Z) Plot;296
16.5.4;12.4.4 Design of RDRA with Ground Plane;297
16.5.5;12.4.5 S11 Plot;297
16.5.6;12.4.6 Gain Plot;297
16.5.7;12.4.7 Impedance Plot;298
16.5.8;12.4.8 Comparison of DRA With and Without Ground Plane;299
16.5.9;12.4.9 Detailed Design of Aperture-Coupled DRA;300
16.5.10;12.4.10 Return Loss;301
16.5.11;12.4.11 Radiation Pattern;302
17;Annexure-1;303
18;Annexure-2;308
19;Annexure-3;322
20;Annexure-4;326
21;Annexure-5;341
22;Annexure-6;353
22.1;Outline placeholder;1
22.1.1;Cartesian, Cylindrical, and Spherical Coordinate System;353
23;Bibliography;373
24;Index;377