Dissertation > Excellent graduate degree dissertation topics show

A Study on the Evolutionary Optimization of Planar Antennas

Author: DaiChenYang
Tutor: BaoYaMing
School: Nanjing University of Posts and Telecommunications
Course: Electromagnetic Field and Microwave Technology
Keywords: Antenna Optimization The planar antenna Bandwidth of the antenna UWB Antenna Monopole BPNN Simulation Software Neural Network Impedance Bandwidth Evolutionary Algorithms Pattern Optimization Patch antenna Graduate Thesis TPA Ground plate Genetic Algorithms Line model The objective function Weighting factor
CLC: TN823.27
Type: Master's thesis
Year: 2011
Downloads: 67
Quote: 2
Read: Download Dissertation

Abstract


Antennas with planar structure are extensively utilized in modern wireless communication systems because of their attractive features including low profile, small size and light weight. With the developing of electromagnetics computer-aided design tools, optimizing the design of antennas using evolution algorithms, such as genetic algorithms, is a focus.A plug-in optimizer based on Python programming and HFSS simulation software for antenna optimization is presented in this thesis. And team progress algorithm (TPA) is used as optimization algorithm. The objective function is established to optimize the impedance bandwidth of some specific antennas.To avoid use time-consuming EM simulator HFSS in evolution algorithm, the error back propagation neural network (BPNN) is employed to establish the nonlinear relationships between the antenna structure parameters and the performance parameters. BPNN can be trained by using samples generated by HFSS. Therefore, computational efficiency can be obviously improved by the trained BPNN and TPA.Two ultra-wideband printed monopole antennas are optimized through plug-in optimizer, simulation software and BPNN in this thesis. One has lower return loss in its working bandwidth after optimized, the other achieves the different requirements through different objective functions.The feasibility of the optimization method is proved by there antenna optimization examples. The plug-in optimizer and BPNN, which is presented in this thesis, provide a technical way to optimize antennas use commercial software HFSS and users optimization algorithms.

Related Dissertations

  1. Development of the Platform for Compressor Optimization Design and Aerodynamic Optimization Design in the Transonic Compressor,TH45
  2. Investigation of Turbine S2 Stream Surface Direct Problem Aerodynamic Optimization Design,V235.11
  3. The Classification of High Dimsnsion Flew Field Based on Manifold Learning,V231.3
  4. Reseach on Optimal Control of Elevator Group Based upon Ant Colony Algorithm,TU857
  5. Research on High Efficiency Interior Permanent Magnet Synchronous Motor,TM341
  6. Application of Interior-Point Theory for Reactive Power Optimization in Large Power Systems,TM714.3
  7. The Basic Research of Axial Flux Inductor Type High Temperature Superconducting Motor,TM37
  8. The Optimization of AVS Video Decoder on the PC Platform and Improvement of Field Decoding,TN919.81
  9. Research on Stability of Hierarchical Sattellite Network,TN927.23
  10. Query Processing and Optimization in Massive Multi-Database Integration,TP311.13
  11. Research on Parallel Frequent Graph Pattern Mining,TP311.13
  12. Research on Feature Extraction and Classification of Tongue Shape and Tooth-Marked Tongue in TCM Tongue Diagnosis,TP391.41
  13. Study on Virtual Detector of Infrared Hyper-Spectral Image,TP391.41
  14. Research on Text Classification Based on Biomimetic Pattern Recongnition,TP391.1
  15. The Application of Fuzzy Control and Neural Network in Planar Double Inverted Pendulum,TP273.4
  16. Research of Visual Servoing in 4-DOF Robotic Manipulator,TP242.6
  17. Research on Visual Servo System of Mechanical ARM,TP242.6
  18. A Communication Board Development Based on LVDS Technology,TP273
  19. Design of Weapon Detection Device Control System,TP183
  20. Studies on Fermentation Optimization, Purification and Enzyme Characteristics of Lipase from Aspergillus Oryzae FS-1,TQ925.6
  21. Large the Hongshan iron ore mine personnel tracking positioning system optimization study,TN929.5

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Antenna > Antenna: a variety of structural forms in > Antenna
© 2012 www.DissertationTopic.Net  Mobile