Title page for etd-0329102-105549


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URN etd-0329102-105549
Author Tzung-Wern Chiou
Author's Email Address chioutw@ema.ee.nsysu.edu.tw
Statistics This thesis had been viewed 5570 times. Download 7626 times.
Department Electrical Engineering
Year 2001
Semester 2
Degree Ph.D.
Type of Document
Language zh-TW.Big5 Chinese
Title Novel Designs of Planar Antennas Including the Feed Network
Date of Defense 2002-03-28
Page Count 153
Keyword
  • BASE STATION ANTENNA
  • PLANAR ANTENNA
  • WIDE BEAMWIDTH
  • BROADBAND OPERATION
  • DUAL POLARIZATION
  • Abstract Novel designs of planar antennas including the feed network for improving the antenna performance improvement (CP axial-ratio bandwidth, XPL, port decoupling for dual-polarized operation, and harmonic control) or achieving dual-band operation are presented. This thesis, comprises five sections. Firstly, for obtaining broadband CP designs, the Wilkinson power divider and branch-line coupler are used. The 3-dB axial ratio CP bandwidths of all proposed antennas are larger than 30%. Secondly, the dual broadband patch antennas including a stopband network are proposed. Thirdly, the dual-polarized patch antenna with high XPL and isolation between two ports by using a Wilkinson power divider with a 180° phase shift between its two ports is proposed. Fourthly, the dual-band and dual-polarized patch antenna suitable for base-station antenna applications for mobile communications systems is studied. Finally, the harmonic control study of a square microstrip antenna is presented.
    Advisory Committee
  • Wen-Shyang Chen - chair
  • W. S. Lee - co-chair
  • Cliff Wang - co-chair
  • Yuan-Tung Cheng - co-chair
  • Hua-Mig Chen - co-chair
  • Chih-Yu Huang - co-chair
  • Kin-Lu Wong - advisor
  • Files
  • etd-0329102-105549.pdf
  • indicate accessible in a year
    Date of Submission 2002-03-29

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