Preface |
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xi | |
About the Authors |
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xiii | |
Abbreviations |
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xv | |
1 Introduction |
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1 | (20) |
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1.1 Need for Millimeter Waves |
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1 | (3) |
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1.2 Antennas for Cellular Communications |
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4 | (2) |
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1.3 Contrast between 4G and 5G Architectures |
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6 | (3) |
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1.4 Antenna Designs for mmWave 5G Mobile Terminals and Base Stations |
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9 | (4) |
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1.4.1 Antennas for Mobile Terminals |
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10 | (2) |
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1.4.2 Antennas for Base Stations |
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12 | (1) |
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13 | (1) |
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13 | (1) |
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14 | (7) |
2 Conformal Antennas for Mobile Terminals |
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21 | (32) |
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21 | (1) |
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2.2 Typical Requirements for Mobile Antennas |
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21 | (2) |
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2.3 CPW-fed Wideband Corner Bent Antenna for 5G Mobile Terminals |
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23 | (21) |
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2.3.1 CPW-fed Wideband Antenna |
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24 | (6) |
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2.3.2 CPW-fed Corner Bent Antenna |
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30 | (4) |
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2.3.3 CPW-fed Corner Bent Antenna with Reflector |
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34 | (10) |
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2.4 A wideband High Gain Conformal Antenna for mmWave 5G Smartphones |
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44 | (5) |
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2.5 Design Guidelines for CPW-fed Conformal Antennas at Ka Band |
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49 | (1) |
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50 | (1) |
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50 | (3) |
3 Flexible Antennas for Mobile Terminals |
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53 | (20) |
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53 | (1) |
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3.2 Overview of Flexible Substrates for mmWave Applications |
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54 | (2) |
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3.3 Corner Bent Patch Antenna for Portrait Mode |
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56 | (4) |
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3.4 Corner Bent Tapered Slot Antenna for Landscape Mode |
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60 | (6) |
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3.5 Dielectric Loaded Polycarbonate-Based Vivaldi Antenna |
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66 | (5) |
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71 | (1) |
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71 | (2) |
4 Compact Antennas with Pattern Diversity |
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73 | (42) |
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73 | (1) |
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4.2 CPW-fed Conformal Folded Dipole with Pattern Diversity |
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74 | (18) |
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4.2.1 CPW-Fed Folded Dipole |
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75 | (8) |
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4.2.2 Conformal Folded Dipole Backed by Reflector |
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83 | (9) |
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4.3 Conformal Antennas with Pattern Diversity |
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92 | (16) |
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4.3.1 Mobile Terminal Usage Modes |
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92 | (2) |
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4.3.2 Conformal Patch Antenna |
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94 | (2) |
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4.3.3 Conformal Tapered Slot Antenna |
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96 | (3) |
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4.3.4 Conformal TSA with Parasitic Ellipse |
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99 | (4) |
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4.3.5 Conformal Pattern Diversity |
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103 | (5) |
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4.4 Case Studies: Measurement in a Typical Indoor Environment |
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108 | (2) |
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110 | (1) |
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111 | (4) |
5 Pattern Diversity Antennas for Base Stations |
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115 | (34) |
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115 | (1) |
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5.2 Pattern Diversity of Path Loss Compensated Antennas for 5G Base Stations |
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115 | (16) |
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5.2.1 mmWave Tapered Slot Antenna |
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116 | (3) |
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5.2.2 Dielectric and Metamaterial Loaded TSA |
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119 | (8) |
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127 | (4) |
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5.3 Path Loss Compensated Pattern Diversity Antennas with 3D Printed Radome |
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131 | (5) |
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5.3.1 3D Printed Radome for a Patch Antenna |
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131 | (1) |
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5.3.2 Pattern Diversity with 3D Printed Radome |
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132 | (4) |
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5.4 Path Loss Compensated Module with Progressive Offset ZIM |
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136 | (6) |
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5.4.1 Central Element: Tapered Slot Antenna |
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136 | (3) |
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5.4.2 Spatially Modulated ZIM Loaded Antenna |
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139 | (2) |
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5.4.3 Stacked Pattern Diversity |
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141 | (1) |
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5.5 Path Loss Compensated Quasi-Reflector Module |
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142 | (1) |
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5.6 Design Guidelines for High Aperture Efficiency Antenna |
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143 | (2) |
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5.7 Case Studies: Measurement in a Typical Indoor Environment |
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145 | (1) |
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146 | (1) |
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146 | (3) |
6 Shared Aperture Antenna with Pattern Diversity for Base Stations |
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149 | (14) |
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149 | (1) |
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6.2 Shared Aperture Antenna |
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150 | (3) |
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6.3 DPZIM Design and Characterization |
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153 | (1) |
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6.4 Shared Aperture Antenna with DPZIM |
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154 | (6) |
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6.5 Design Guidelines for High-Gain Dual-Polarized Antenna Module |
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160 | (1) |
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160 | (1) |
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160 | (3) |
7 Co-Design of 4G LTE and mmWave 5G Antennas for Mobile Terminals |
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163 | (26) |
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163 | (1) |
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7.2 Miniaturization Techniques for Antenna Size Reduction |
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163 | (1) |
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7.3 Conformal 4G LTE MIMO Antenna Design |
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164 | (8) |
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7.3.1 CRLH-Based Conformal 4G LTE Antenna |
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164 | (4) |
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7.3.2 Compact CRLH-Based Conformal 4G LTE MIMO Antenna |
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168 | (4) |
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7.4 Conformal mmWave 5G MIMO Antenna |
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172 | (4) |
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7.5 Corner Bent Integrated Design of 4G LTE and mmWave 5G Antennas |
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176 | (8) |
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7.5.1 4G LTE Antenna Design |
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176 | (1) |
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7.5.2 mmWave 5G Antenna Design |
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177 | (4) |
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7.5.3 Co-Designed Corner Bent 4G LTE and mmWave 5G MIMO Antennas |
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181 | (3) |
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7.6 Case Study: Co-Design of 4G and 5G Antennas in a Smartphone |
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184 | (1) |
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185 | (1) |
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186 | (3) |
8 Corner Bent Phased Array for 5G Mobile Terminals |
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189 | (14) |
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189 | (1) |
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8.2 Phased Array Designs for mmWave Frequencies |
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190 | (2) |
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8.3 Need for Corner Bent Phased Array |
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192 | (2) |
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8.4 Corner Bent Phased Array on Polycarbonate |
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194 | (6) |
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8.5 Design Guidelines for a Phased Array at Ka Band |
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200 | (1) |
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200 | (1) |
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201 | (2) |
9 Fabrication and Measurement Challenges at mm Waves |
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203 | (10) |
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203 | (1) |
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9.2 Fabrication Process and Associated Tolerances |
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203 | (3) |
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9.3 S-parameter Measurements |
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206 | (1) |
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9.4 Pattern Measurements and Sources of Error |
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207 | (2) |
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209 | (2) |
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211 | (1) |
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211 | (2) |
10 Research Avenues in Antenna Designs for 5G and beyond |
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213 | (16) |
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213 | (1) |
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10.2 PCB-Based Antenna Designs for 5G Cellular Devices |
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213 | (2) |
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10.3 Application of Additive Manufacturing for Antennas |
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215 | (4) |
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10.3.1 A Dual Band mmWave Antenna on 3D Printed Substrate |
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216 | (3) |
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10.4 On-Chip Antennas for CMOS Circuitry |
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219 | (6) |
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10.4.1 A Wideband CPS-Fed Dipole on Silicon |
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220 | (5) |
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10.5 Optically Transparent Antennas |
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225 | (1) |
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226 | (1) |
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226 | (3) |
Appendices |
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229 | (8) |
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Appendix A: Hints for Simulations in Ansys HFSS |
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229 | (4) |
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229 | (4) |
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Appendix B: Measurement Issues with End-Launch Connector |
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233 | (1) |
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Appendix C: Material Parameters' Extraction Using S-parameters |
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234 | (1) |
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Appendix D: Useful MATLAB Codes |
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235 | (2) |
References |
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237 | (2) |
Index |
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239 | |