Analysis and Design of a Multi-Beam Millimeter-Wave Antenna

Kazemi, Hamid Reza | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46315 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Borji, Amir
  7. Abstract:
  8. So far, Investigations have shown that microstrip antennas (MSA) offer a lot of advantages at microwave and millimeter wave frequencies. These advantages include small size, large impedance bandwidth, high radiation efficiency, ease of fabrication, low price, and simple and easy excitation (such as probe coupling,aperture coupling or proximity coupling).Microstrip antennas are fabricated in many different shapes such as square,rectangle, circle, etc. The proposed antenna in this dissertation is a multi-beam millimeter wave antenna with annular ring strip. This antenna is a multi-beam antenna with the ability to switch between different beams. Beam direction switches by changing the position of excitation. This antenna has a similar functionality with the Rotman lens with a difference that in this antenna, the Rotman lens and the antenna are combined.In this dissertation, we focus on representing an analytic formulation for the Method of Moment in spectral domain and spatial domain for the proposed antenna.Furthermore, by solving the MOM system of equations, surface currents and other antenna parameters are calculated. Then, a parametric analysis has been preformed and finally, based on these analysis and simulations a parameter design for the antenna has been presented
  9. Keywords:
  10. Microstrip Antenna ; Millimeter Wave ; Moment Method ; Beamforming

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