Dissertation > Excellent graduate degree dissertation topics show

Dual- band antenna array MATLAB software design

Author: ZhouHongBo
Tutor: XiaoShaoQiu；LiuQiZhi
School: University of Electronic Science and Technology
Course: Electronics and Communication Engineering
Keywords: Dual Band and Wide Band Phased Arrays Wide Angle Scanning Invasive Weed Optimization non-uniform arrays Active Reflection Coefficient
CLC: TP319
Type: Master's thesis
Year: 2011
Downloads: 126
Quote: 0
Read: Download Dissertation

Abstract


Dual band, wide band and wide scan angle phased arrays is studied in this thesis.For the arrays unit, the method of fed, wideband, miniaturization, and muti-frquency, and wide beamwidth and the basic technology and analysis method of microstrip patch antennas is discussed. Based on the method, we design and simulate a wide band and wide beamwidth microstrip antenna and a dual band, wide band, wide beamwidth microstrip antenna. By adding a iron box outside the E patch antenna, which can reducing the radiation area, we get an antenna that works at the frequency band form 1200MHz to 1400MHz and its half-power beamwidth is±60 degree between this band. Also, by comprising two printed dipole and designing suitable feed network, we get an antenna works between 400MHz-480MHz and 1200MHz-1400MHz and its half-power beamwidth is also±60 degree between this two bands.Then, after introducing some basic theory and simple characteristics of phased arrays, we first introduce the Invasive Weed Optimization (IWO) into the synthesis of non-uniformly phased array and get a dual band, wide band and wide scan angle phased arrays. The phased arrays can steer to±60degree at 400MHz-480MHz and 1200MHz-1400MHz and no grating lobe appear in the real space. However, the active reflection coefficient (ARC) of the arrays unit is big, most of the energy is reflecting to the feed port.For the active element pattern (AEP) and active reflection coefficient (ARC), we try to reduce the couple between the units by changing the shape of the antenna to increase the scan angle. A single printed dipole with two parasitic monopole elements to broaden the E-plane radiation pattern to±60 degree is designed. Designing a uniform array with this unit, the arrays can steer to±40 degree while the ARC is small than -10dB which is wide than normal dipole arrays.

Related Dissertations

  1. Research on Limited Electronically Scanning Antenna on Board,TN828.5
  2. Research and Design of Microstrip frequency sweep Antenna Array,TN821
  3. Analysis on the Element with Wide Band and Broad-beam for a Two-dimensional System of Phased Array Antennas,TN821.8
  4. Research on the Information System of Typhoon Based on WebGIS,TP319
  5. Research on Real-Time Performance in Marine Environment Monitoring Information Publication System Based on Embedded WebGIS,TP319
  6. Application of the Network Course System in the Primary Commanding Academy,TP319
  7. Research on the Techniques of Intelligence Information Service Describing and Matching in the ToIIS,TP319
  8. Research of Material Storage Management System Based on Photogrammetry,TP319
  9. The Application of WebGIS in Roadlamp Information System,TP319
  10. A Non-deterministic Events Log System Based on the Paravirtual VM Xen,TP319
  11. Multi-Agent Automated Intelligent Shopping System (MAISS),TP319
  12. Application of MicroMine Software in Constructing Mining Development & Study Platform,TP319
  13. Finance Concentrative Defrayal Management System,TP319
  14. MES -based decision support system for production monitoring Research and Application,TP319
  15. Application of Web Information Extraction in Commercial Bank Credit Risks Supervisory System,TP319
  16. Research on Load Balance of Bill Exchange System Web Server,TP319
  17. The Competitive Intelligence System Based on the Date Mining Technology,TP319
  18. Design of the Enterprise Information Inquiry System Based on the GSM Network,TP319
  19. The Applications of Some Economic Model and Its Computer Implementation,TP319
  20. Study on Eco-island Decision-assistant System for Chongming Based on Model Base,TP319
  21. Applications of the Data Mining in the Vocational Education System,TP319

CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Specific applications
© 2012 www.DissertationTopic.Net  Mobile