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Razieh, Azad | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 45803 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Farzaneh, Forouhar
  7. Abstract:
  8. In recent years due to the advances in semiconductor technology and the ability to implement small-scale manufacturing, communication at 60 GHz band receive more attention than ever has been. The use of this frequency band is not only about 7-9 GHz unlicensed broadband access provided, but getting smaller devices make it possible to use multiple antennas at the transmitter and receiver, and thus taking advantage of multiple input – multiple output systems. Antennas used in these systems should have features such as small size , low weight, high gain and bandwidth and also they should keep their high efficiency and gainat high frequency range (about a few GHz ). To achieve these features antennas are mainly designed as antenna arrays . These arrays can be used as sub- arrays in a multiple input – multiple output systems . It is noteworthy that at the frequency band of 60 GHz, losses due to path and oxygen are considered more seriously .Beamforming and the beam rotation in arrays are solutions that can be provided to compensate for this loss .In this thesis, an array of planar slot antennas are designed within 57-66 GHz . The purpose is designing an array that is suitable for use as subarray in MIMOsystems. To increase capacity of MIMO systems, the beam of arrays used in this network can be rotated due to the appropriate phase shifters . Feasibility of constructing such arrays are considered in the design process . For calculation,softwares such as ADS and HFSS are used
  9. Keywords:
  10. Beam Steering ; Multiple Input Multiple Output (MIMO)System ; Millimeter Wave ; Planar Antenna Array ; Antennas Mutual Coupling ; 60 GHz Band

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