Design and Simulation of mmWave Antenna Arrays with Novel 3D Geometries for 5G Wireless Applications

Ahmadi, Nima | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51315 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Farzaneh, Forouhar
  7. Abstract:
  8. In the new generations of mobile communication systems, smart antennas are used to achieve higher capacities. Since these systems have the ability to form a radiation pattern where the desired signal is received with minimum distortion and inteferers are received with a significant attenuation therefore their application makes it possible to have a large signal to inteference ratio. In addition by setting the main beam direction towards the desired signal, it is conceivable to realize the the communication with a lower power. The optimal methods for angle-of-arrival estimation and beamforming in one and two dimensional structures has been studied in the literature, but the three dimensional array geometries have been less addressed in the recent studies. The effect of mutual coupling in the beamforming process reduces the efficiency of conventional methods in this field, in this thesis an analytical method is proposed for the beamforming in two and three dimensional geometry structures including the mutual coupling effects. By a compromise between the computation time and the accuracy of beamforming, it has been made possible to place the main beam and the nulls of radiation pattern towards the desired signal and the inteferers respectively. In order to evaluate the proposed method, first the beamforming procedure is accomplished using different two and three dimensional geometries and finally these structures’s performances are compared according to the signal to inteferer ratio through Monte-Carlo simulations
  9. Keywords:
  10. Monte Carlo Simulation ; Smart Antenna System ; Mutual Coupling ; Beamforming ; Three Dimensional Geometry ; Signal to Interference Ratio

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