Title page for etd-0721112-113743


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URN etd-0721112-113743
Author SHU-CHUAN CHEN
Author's Email Address chensc@ema.ee.nsysu.edu.tw
Statistics This thesis had been viewed 5365 times. Download 248 times.
Department Electrical Engineering
Year 2011
Semester 2
Degree Ph.D.
Type of Document
Language zh-TW.Big5 Chinese
Title LTE/WWAN Ground Antenna for Slim Mobile Communication Devices
Date of Defense 2012-07-20
Page Count 105
Keyword
  • Hearing aid compatibility
  • Surface current distribution
  • Band-stop matching circuit
  • Ground antennas
  • Reconfigurable circuit element
  • LTE/WWAN
  • Abstract In this dissertation, novel printed multiband antennas for slim mobile communication devices are presented. The design techniques on achieving decreased antenna size and enhanced operating bandwidth in different shaped system ground planes with the antennas printed thereon are proposed. At first, a WWAN antenna integrated with a U-shaped ground plane is presented. Two techniques are applied to achieve WWAN operation with a small antenna size. The first technique is to embed load a proper chip inductor at a proper position in the shorted strip monopole of the antenna. The second one is to use a band-stop matching circuit disposed on the main circuit board of the handset. For the second and third antenna designs, owing to the C-shaped ground plane, much enhanced operating bandwidth for their lower band can be obtained. The second antenna design can cover the LTE/WWAN eight-band operation without increasing the size of the antenna by using a reconfigurable circuit element. The third antenna design integrated with a battery element and a metal midplate for practical application to help reduce the thickness and enhance the robustness of handset. The antenna can cover seven-band LTE/WWAN operation with good radiation characteristics and occupy a small size of 35 x 8 mm2. Finally, the simulated SAR and HAC results are analyzed for bio-compatibility consideration.
    Advisory Committee
  • none - chair
  • none - co-chair
  • none - co-chair
  • none - co-chair
  • none - co-chair
  • KIN-LU WONG - advisor
  • Files
  • etd-0721112-113743.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2012-07-21

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