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Title page for etd-0824115-131507


URN etd-0824115-131507 Statistics This thesis had been viewed 276 times. Download 0 times.
Author Guo-Mao Hsu
Author's Email Address No Public.
Department Communication Engineering
Year 2014 Semester 2
Degree Master Type of Document Master's Thesis
Language zh-TW.Big5 Chinese Page Count 43
Title SIMPLIFIED CPW-FED BROADBAND ANTENNA INVOLVING THE ZEROTH ORDER MODE
Keyword
  • ZOR antenna
  • epsilon negative transmission
  • CPW-Fed Antenna
  • compact antenna
  • compact antenna
  • CPW-Fed Antenna
  • epsilon negative transmission
  • ZOR antenna
  • Abstract This thesis describes the broadband antenna which is fed with the simplified coplanar waveguide (CPW) in the zeroth order mode, and is based on CRLH-TL (composite right/left handed transmission line ) theory.
    It is built on the upper surface of an FR4 substrate with thickness of 1.6 mm. A straight shorted strip is connected between the center conductor and the ground plane as a loaded parallel element.
    To increase the parallel inductance and to save some space, the straight strip can be replaced by a meandered strip. This straight strip will excite the resonance frequency.
    The measured results show that the fractional bandwidth is extended up to 90% and radiation efficiencies of the ZOR (zeroth-order resonance),FOR (first-order resonance) and SOR (second-order resonance) are 82.9%,93% and 77.8% respectively.
    In the 10 dB return-loss bandwidth can cover from 1.8GHz to 4.9GHz and the measured peak gain is between 2.9 and 4.5 dB .
    Advisor Committee
  • The-Nan Chang - advisor
  • Chun-Ming Lin - co-chair
  • Yen-Sheng Chen - co-chair
  • Files indicate not accessible
    Date of Defense 2015-07-07 Date of Submission 2015-08-24


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