Investigation of Low Profile Antenna Designs for Use in Hand-Held Radios(book)

breezepchn

目录在后面，自己选用下载

breezepchn

简介:chapter 1&2
格式:pdf
大小:234K

breezepchn

简介:chapter 3
格式:pdf
大小:306K

breezepchn

简介:chapter4 part1
格式:pdf
大小:145K

breezepchn

简介:chapter4 part2
格式:pdf
大小:254K

captaing

要把目录列出来啊,否则我们都不知道里面的内容讲什么

breezepchn

简介:chapter 4 part3
格式:pdf
大小:187K

breezepchn

目录：Investigation of Low Profile Antenna Designs
for Use in Hand-Held Radios
TABLE OF CONTENTS
ABSTRACT............................................................................................. ii
ACKNOWLEDGMENTS...................................................................... iii
TABLE OF CONTENTS......................................................................... iv
Chapter 1: Introduction......................................................................... 1
1.1 Overview.......................................................................................... 1
1.2 Antenna History................................................................................ 2
1.3 Current Work................................................................................... 5
1.4 Statement of Problem and Summary of Issues....................................... 6
Chapter 2: Fundamentals of Electrically Small Antennas................... 9
2.1 Fundamental Limitations..................................................................... 9
2.1.1 Section Overview.................................................................... 9
2.1.2 Limit on Radiation Q............................................................... 11
2.1.3 Limit on Radiation Efficiency................................................... 16
2.2 Design Issues for Electrically Small Antennas........................................ 21
2.2.1 Currents on Dipole Antennas.................................................... 21
2.2.2 Antennas over Conducting Ground Planes.................................. 24
2.3 Design Issues in the Hand-Held Environment......................................... 27
v
2.3.1 Section Overview.................................................................... 27
2.3.2 Design Issues for a Truncated Ground Plane............................... 28
2.3.3 Casing Effects......................................................................... 33
2.3.4 Antennas Operated Near the Human Body................................... 35
2.4 Conclusion.......................................................................................... 39
Chapter 3: The Inverted-L Antenna and Variations............................. 42
3.1 Introduction........................................................................................ 42
3.2 The Far Field Radiation Pattern of the Inverted-L Antenna........................ 43
3.3 The Input Impedance of the Inverted-L Antenna....................................... 49
3.4 Variations on the Inverted-L Antenna...................................................... 59
3.4.1 The Inverted-F Antenna............................................................. 59
3.4.2 The Planar Inverted-F Antenna................................................... 61
3.4.3 The Proximity Coupled Planar Inverted-F Antenna........................ 66
3.4.4 The Dual Inverted-F Antenna...................................................... 69
Chapter 4: Analysis and Design of the Dual Inverted-F Antenna......... 76
4.1 Introduction............................................................................................... 76
4.2 Numerical Techniques.......................................................................... 77
4.2.1 The Method of Moments Applied to Wire Antennas..................... 77
4.2.2 The Numerical Electromagnetics Code (NEC) ............................. 81
4.2.2.1 Current Basis and Weighting Functions........................... 81
4.2.2.2 Feed Technique............................................................. 82
4.2.2.3 Derivation of Antenna Fields.......................................... 83
vi
4.2.2.4 Modeling Guidelines..................................................... 85
4.2.3 Validation of Modeling Techniques............................................. 86
4.2.3.1 Comparison to Published Data....................................... 86
4.2.3.2 Application to the Dual Inverted-F Antenna..................... 91
4.3 Numerical Analysis.............................................................................. 97
4.3.1. The Inverted-F Antenna............................................................ 97
4.3.2 The Dual Inverted-F Antenna..................................................... 104
4.3.3 The Effects of a Size-Limited Ground Plane................................. 111
4.3.3.1 The Inverted-F Antenna over a Conducting Box................ 111
4.3.3.2 The DIFA Over Conducting Boxes of Various Size............ 117
4.4 Experimental Results and Analysis......................................................... 128
4.4.1 Measurement of the IFA Against a Large Ground Plane.................. 128
4.4.2 Measurement of the DIFA Against a Large Ground Plane............... 133
4.4.3 Measurement of the DIFA Over Conducting Boxes of Various Size. 138
4.5 Conclusion.......................................................................................... 151
Chapter 5: The Microstrip Antenna....................................................... 153
5.1. Introduction........................................................................................ 153
5.2. The Rectangular and Circular Patch Microstrip Antennas......................... 155
5.2.1. The Magnetic Cavity Model...................................................... 155
5.2.2. Application of the Magnetic Cavity Model.................................. 161
5.2.2.1. The Rectangular Patch Microstrip Antenna...................... 161
5.2.2.2. The Circular Patch Microstrip Antenna........................... 164
5.2.3. Summary of the Magnetic Cavity Model Results.......................... 166
vii
5.3. Broadband Microstrip Antennas............................................................ 172
5.3.1. Section Overview..................................................................... 172
5.3.2. Optimizing the Substrate Properties for Increased Bandwidth......... 172
5.3.3. Stacked Microstrip Patch Antennas.............................................173
5.3.4. Non-Contacting Feed Configurations.......................................... 177
5.4. Size-Reduced Microstrip Antennas........................................................ 183
5.4.1. Size-Reduced Rectangular Patch Microstrip Antennas.................. 183
5.4.2. Size-Reduced Circular Patch Microstrip Antennas........................ 194
5.5. Summary of Broadband and Size-Reduced Microstrip Antenna Designs..... 198
5.6. Conclusion......................................................................................... 200
Chapter 6: The Proximity Coupled Rectangular Patch Microstrip
Antenna................................................................................ 203
6.1. Introduction....................................................................................... 203
6.2. Method of Analysis............................................................................. 204
6.2.1. Application of the Method of Moments to Planar Antennas
using SONNET........................................................................ 204
6.2.2. Feed and Field Modeling in SONNET........................................ 206
6.2.3. Application of SONNET to Free Space Radiation Problems.......... 207
6.2.4. Verification of the SONNET Algorithm...................................... 209
6.2.4.1. Convergence Tests........................................................ 209
6.2.4.2. Application of SONNET to the Rectangular Patch MSA.... 214
6.3. Numerical Analysis of the Proximity-Coupled Rectangular Patch
Microstrip Antenna.............................................................................. 218
6.3.1. The Proximity Coupled Rectangular Patch Microstrip Antenna..... 218
viii
6.3.2. Affect of Patch Size on Input Impedance.................................... 221
6.3.3. Affect of Feedline Location on Input Impedance.......................... 224
6.3.4. Open-Circuit Single Shunt Stub Tuning...................................... 229
6.4. Conclusion......................................................................................... 233
Chapter 7: Conclusions and Recommendations..................................... 235
7.1 Conclusions......................................................................................... 235
7.2 Recommendations................................................................................. 236

breezepchn

简介:chapter 4 part4
格式:pdf
大小:128K

breezepchn

简介:chapter 4 part5
格式:pdf
大小:225K

breezepchn

简介:chapter5
格式:pdf
大小:277K