Title page for etd-0623117-153357


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URN etd-0623117-153357
Author De-Ming Chian
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 Eight 3.5/5.8-GHz Dual-Band MIMO Antennas for the 5G Smartphone
Date of Defense 2017-07-19
Page Count 60
Keyword
  • Eight dual-band MIMO antennas
  • MIMO channel capacity
  • Data throughput
  • 5G communications
  • Smartphone antennas
  • Eight-antenna Smartphones
  • MIMO antennas
  • Abstract For the Massive MIMO (Multi-input Multi-output) operation in the fifth-generation (5G) communications, eight MIMO antennas embedded in the smartphone for 8 x 8 MIMO operation are presented. To achieve seamless wireless connection, the eight antennas are designed to cover the 3.5 GHz band for mobile communication and the 5.8 GHz band for wireless local area network operation. The eight dual-band MIMO antennas for the 3.5/5.8-GHz operation are formed by four two-antenna building blocks, which are disposed along two long side edges of the system ground plane in the smartphone. The ground clearance of the two-antenna building block is 1 mm only, which is promising for practical application in the smartphone with a large display panel. In addition, the two-antenna building block has a compact planar structure of size 7 × 17.5 mm2. The antenna efficiency of the eight antennas is respectively larger than 45% and 60% in the 3.5 and 5.8 GHz bands, and the ECC is less than 0.2 between any two antennas thereof. Moreover, the total length of two two-antenna building block is only 50 mm, which is about 0.6 wavelength at 3.5 GHz. To analyze the upper bound on the data throughput, the Shannon channel capacity and its physical concept are studied. The data throughput has been found to reach over 2.7 Gbps in the experimental testing for the smartphone with the proposed eight 3.5/5.8-GHz MIMO antennas in an indoor environment. The obtained results indicate that the proposed MIMO antennas are promising for applications in the fifth-generation communications.
    Advisory Committee
  • Wen-Shyang Chen - chair
  • Tsung-Wen Chiu - co-chair
  • Kin-Lu Wong - advisor
  • Files
  • etd-0623117-153357.pdf
  • Indicate in-campus at 99 year and off-campus access at 99 year.
    Date of Submission 2017-07-23

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