Title page for etd-0516114-114319


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URN etd-0516114-114319
Author Tseng-Wei Weng
Author's Email Address No Public.
Statistics This thesis had been viewed 5365 times. Download 21 times.
Department Electrical Engineering
Year 2013
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Triple-Wideband LTE/WWAN Combined-type Antennas for Tablet Devices
Date of Defense 2014-05-31
Page Count 59
Keyword
  • Combining-type antenna
  • LTE/WWAN
  • Tablet device
  • Triple-wideband
  • Matching circuit
  • Abstract In this thesis, novel combined-type antennas having three wide operating bands (698~960 MHz, 1710~2690 MHz, and 3400~3800 MHz) to cover the LTE/WWAN operation for tablet devices are presented. In the first design, the antenna uses a main structure thereof to provide a wide middle wideband of 1710~2690 MHz. Then, by combining an inductively coupled low-band branch strip with the main structure, the antenna can cover the desired lower wideband of 698~960 MHz. By further simply adding a short branch strip, the desired higher wideband of 3400~3800 MHz can be obtained. The antenna can achieve triple-wideband LTE/WWAN operation and occupy a small size of 10 ∗ 45 mm2 with a uniplanar structure. The second antenna design uses a main structure to provide an ultra-wideband of 1710~3800 MHz to cover the desired middle wideband and higher bandwidth. Then the desired lower wideband is achieved by applying the technique used in the first antenna with a high-pass matching circuit. The occupied clearance region of the second antenna is greatly decreased to 10 ∗ 35 mm2 only. The third antenna design uses a simple monopole structure integrating an internal low-pass matching circuit to cover the desired middle wideband and decrease the clearance region needed. In addition, by applying the previously presented techniques, the desired lower wideband can be generated. For the desired higher wideband, it is achieved by simply adding a short branch strip. Furthermore, the third antenna can be disposed in a smaller clearance region of 10 ∗ 30 mm2 with good radiation characteristics.
    Advisory Committee
  • Yuan-Chih Lin - chair
  • Wei-Yu Li - co-chair
  • Kin-Lu Wong - co-chair
  • Saou-Wen Su - co-chair
  • Kin-Lu Wong - advisor
  • Files
  • etd-0516114-114319.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2014-06-16

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