Multibeam antenna for an intelligent base station.

• Other Authors: Fu, Kar Kit.
• Format: Others
• Language: English; Chinese
• Published: 1998
• Subjects: Antenna arrays; Wireless communication systems
• Online Access: http://library.cuhk.edu.hk/record=b5889739; http://repository.lib.cuhk.edu.hk/en/item/cuhk-322316

by Fu Kar Kit. === Thesis (M.Phil.)--Chinese University of Hong Kong, 1998. === Includes bibliographical references (leaves 158-160). === Abstract also in Chinese. === Chapter Chapter 1: --- Introduction --- p.1 === Chapter Chapter 2: --- Background and Theories --- p.3 === Chapter 2.1 --- Background History --- p.3 === Chapter 2.2 --- Finite Difference Time Domain Method --- p.4 === Chapter 2.2.1 --- Basic Formulation --- p.4 === Chapter A ) --- Governing Equations --- p.4 === Chapter B ) --- Discretization of Differential Equations --- p.6 === Chapter C ) --- Numerical Stability --- p.7 === Chapter 2.2.2 --- Absorbing Boundary Condition ( PML - Bandlimited ) --- p.8 === Chapter A ) --- Berenger Perfectly Matched Layer --- p.8 === Chapter B ) --- "Theroy, Two-Dimensional TE Case" --- p.10 === Chapter B-1 ) --- Propagation of a Plane Wave in a PML Medium --- p.11 === Chapter B-2 ) --- Transmission of a Wave through PML-PML Interfaces --- p.15 === Chapter B-3 ) --- PML for the FD-TD technique in 2-D domain --- p.18 === Chapter C ) --- Extension to Three-Dimension Case --- p.22 === Chapter 2.2.3 --- Modeling of Source and Passive Lumped-Circuit --- p.25 === Chapter 2.2.4 --- Obtaining the frequency dependent parameters --- p.27 === Chapter 2.2.5 --- Time Domain Extrapolation --- p.29 === Chapter 2.2.6 --- Near-to-Far-Field Transformation --- p.33 === Chapter A ) --- FD-TD implementation of Near-to-Far-Field Transformation --- p.35 === Chapter B ) --- Numerical Techniques to compute the Antenna Directivity --- p.38 === Chapter 2.3 --- Transmission Line Circuit Theories --- p.40 === Chapter 2.3.1 --- Stripline --- p.43 === Chapter 2.3.2 --- Microstrip Line --- p.46 === Chapter 2.3.3 --- Quadrature 90° Hybrid --- p.50 === Chapter 2.3.4 --- Butler Matrices --- p.50 === Chapter A ) --- Types of hybrids --- p.54 === Chapter B ) --- Number of hybrids --- p.51 === Chapter C ) --- Number of fixed phase shifters --- p.51 === Chapter D ) --- Positions and magnitudes of fixed phase shifters --- p.51 === Chapter E ) --- Values of total phase shift at output ports and produced by input ports --- p.53 === Chapter 2.4 --- Antenna Theories --- p.54 === Chapter 2.4.1 --- Microstrip Patch Antenna --- p.54 === Chapter A ) --- Bandwidth Enhancement --- p.55 === Chapter B ) --- Antenna design methodology --- p.55 === Chapter B-1 ) --- Substrate selection --- p.55 === Chapter B-2 ) --- Rectangular element analysis and design --- p.56 === Chapter 1) --- Electromagnetically coupled patch --- p.57 === Chapter 2) --- Aperture coupled patch --- p.61 === Chapter 2.4.2 --- Array Antenna --- p.67 === Chapter Chapter 3: --- Butler Matrix Analysis and Design --- p.73 === Chapter 3.1 --- Circuit Topology --- p.73 === Chapter 3.1.1 --- Basic Operation of the 4x4 Butler Matrix --- p.74 === Chapter 3.2 --- Design Methodology and Circuit Characteristics --- p.75 === Chapter 3.2.1 --- 3 dB branch-line coupler --- p.76 === Chapter 3.2.2 --- 0 dB branch-line coupler --- p.79 === Chapter 3.2.3 --- 4x4 Butler matrix Beamforming network --- p.82 === Chapter Chapter 4: --- Multibeam Array Analysis and Design --- p.90 === Chapter 4.1 --- Antenna Architecture --- p.90 === Chapter 4.2 --- Antenna Design --- p.91 === Chapter 4.2.1 --- Antenna Choice --- p.91 === Chapter A ) --- Microstrip Dipole --- p.91 === Chapter B ) --- Rectangular Microstrip Patch --- p.91 === Chapter C ) --- Circular Patch --- p.92 === Chapter D ) --- Compact Patch --- p.93 === Chapter E ) --- Annular Resonators --- p.94 === Chapter F ) --- Antenna Choice of the 4x4 Butler Matrix Network --- p.94 === Chapter 4.2.2 --- Choice of Feeding and Matching Technique --- p.95 === Chapter 4.2.3 --- Basic Antenna Parameters and Measurement Technique --- p.95 === Chapter A ) --- Radiation Pattern --- p.95 === Chapter B ) --- Radiation Pattern Lobes --- p.96 === Chapter C ) --- Antenna Gain --- p.97 === Chapter D ) --- Input Impedance --- p.97 === Chapter E ) --- Bandwidth --- p.97 === Chapter 4.2.4 --- FDTD Characterization --- p.98 === Chapter 4.3 --- Multibeam Antenna Design and Optimization --- p.104 === Chapter 4.4 --- Stripline Fed - Multibeam Antenna --- p.107 === Chapter 4.4.1 --- Design Methodology of the Stripline 3 dB Hybrid --- p.109 === Chapter 4.4.2 --- Design Methodology of the Stripline 0 dB Hybrid --- p.111 === Chapter 4.4.3 --- Design Methodology of the Stripline 4x4 Butler Matrix Network --- p.113 === Chapter 4.4.4 --- Design Methodology of the Stripline Aperture Coupled Patch --- p.138 === Chapter 4.4.5 --- Design Methodology of the Stripline Multibeam Antenna --- p.142 === Chapter Chapter 5: --- Design Examples and Application of Multibeam Antenna --- p.150 === Chapter 5.1 --- Wireless Local Loop (WLL) System --- p.150 === Chapter Chapter 6: --- Conclusions and Recommendations for Future Work --- p.156 === Chapter 6.1 --- Conclusions --- p.156 === Chapter 6.2 --- Recommendations for Future Work --- p.157 === Bibliography --- p.158 === Publication List --- p.160