Title page for etd-0513117-102513


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URN etd-0513117-102513
Author Wan-Chin Wu
Author's Email Address No Public.
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Department Electrical Engineering
Year 2016
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title MIMO Antennas for the Metal-Casing Smartphone
Date of Defense 2017-06-04
Page Count 60
Keyword
  • Mobile antennas
  • 4 × 4 MIMO
  • 2 × 2 MIMO
  • MIMO antennas
  • Metal-casing smartphone
  • Smartphone antennas
  • Abstract Two designs of the LTE MIMO antennas for the metal-casing smartphone are presented. The first design is the MIMO antennas for the 2 × 2 WLAN and 4 × 4 LTE MIMO operation in the metal-casing smartphone. All the antennas use the metal frame to be their radiators and are disposed at the short edges of the smartphone with a narrow metal clearance of 2 mm. Ant1, Ant2 and Ant5 thereof are disposed at the top edge of the smartphone. Ant1 is an inverted-F antenna covering 824~960/1710~2690 MHz for the LTE operation. Ant2 is a half-loop antenna covering 1710~2690 MHz for the LTE operation and 1575~1610 MHz for the GPS operation. Ant5 is a half-loop antenna for the WLAN operation. Ant3, Ant4 and Ant6 are disposed at the bottom edge of the smartphone. The structures of Ant3, Ant4 and Ant6 are similar to those of Ant1, Ant2 and Ant5. Ant1 and Ant3 can be applied in a 2 × 2 LTE MIMO operation in 824~960/1710~2690 MHz. Ant1, Ant2, Ant3 and Ant4 can be applied in a 4 × 4 LTE MIMO operation in 1710~2690 MHz. Ant5 and Ant6 can be applied in a 2 × 2 WLAN MIMO operation in 2400~2500/5000~6000 MHz. In order to decrease the envelope correlation coefficients (ECCs) of the MIMO antennas, new decoupled antennas for the LTE MIMO operation in the metal-casing smartphone are also presented. The decoupled MIMO antennas include an inverted-F antenna and a half-loop antenna and are disposed at the short edge of the smartphone. The inverted-F antenna can cover 824~960/1710~2690 MHz. The half-loop antenna can cover 1710~2690 MHz. Good ECCs of the two antennas can be obtained owing to the decoupling structure of the half-loop antenna. Two additional antennas of same structure are disposed at the opposite short edge to form four MIMO antennas for the 4 × 4 LTE MIMO operation. Details of the antenna design and the calculated MIMO channel capacities are presented.
    Advisory Committee
  • Wei-Yu Li - chair
  • Shu-Chuan Chen - co-chair
  • Kin-Lu Wong - advisor
  • Files
  • etd-0513117-102513.pdf
  • Indicate in-campus at 99 year and off-campus access at 99 year.
    Date of Submission 2017-06-21

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