Title page for etd-0712114-141227


[Back to Results | New Search]

URN etd-0712114-141227
Author Po-Ting Liu
Author's Email Address No Public.
Statistics This thesis had been viewed 5568 times. Download 802 times.
Department Electrical Engineering
Year 2013
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title A C-band MIMO Antenna with Isolation and Gain Enhancement for MIMO Radar Application
Date of Defense 2014-07-01
Page Count 49
Keyword
  • gain enhancement
  • superstrate
  • isolation
  • wideband
  • MIMO
  • Abstract Recently, the concept of MIMO communications has created considerable attention both in mobile communications and advanced radar technology. In MIMO radar technology, the antenna should be capable of operating in wideband and high gain. In this thesis, we design a C-Band MIMO antenna for MIMO radar applications by introducing reaction theorem to enhance wideband isolation, and adding superstrates with special designs to improve gain enhancement.
    First, we propose coplanar waveguide (CPW) to feed multi-input multi-output (MIMO) antenna. We choose CPW feeding because it provides the advantage of wideband impedance matching. Our antenna structure is similar to protruding structure, which provides isolation enhancement. In order to further improve the isolation over the desired frequency band, the reaction theorem is applied. By introducing equivalent magnetic current, the induced voltage can be suppressed. So that wideband MIMO antenna design can be done.
    In order to enhance the gain over C-band, three stacked superstrates are proposed. By analyzing the electric field on the xz, yz plane of the antenna, we create a metal strip on the corresponding location on the superstrate to enhance gain. Compared with common superstrate, three stacked superstrates are placed only at a distance of 0.25λ, with a gain enhancement of 1~3 dB.
    Advisory Committee
  • Chih-Wen Kuo - chair
  • Hsin-Lung Su - co-chair
  • Sung-Lin Chen - co-chair
  • Lih-Tyng Hwang - co-chair
  • Ken-Huang Lin - advisor
  • Files
  • etd-0712114-141227.pdf
  • Indicate in-campus at 1 year and off-campus access at 1 year.
    Date of Submission 2014-08-12

    [Back to Results | New Search]


    Browse | Search All Available ETDs

    If you have more questions or technical problems, please contact eThesys