Beam-shaping antenna arrays for 5G communication system and automotive radar
(2020)
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- Authors
- Supervisors
- Craeye, Christophe
- Abstract
- In order to improve the performance of a wireless communication system, beam-shaping antenna arrays have been exploited. A parasitic antenna array consists of one or few driven antennas and multiple parasitic elements with tunable impedance attached to their terminal. By varying the tunable impedances the antenna’s total radiation pattern can be shaped electronically. A parasitic antenna array entails the design and computational challenges. In this thesis, an efficient spectral optimization method has been proposed to overcome the computational challenges of a parasitic array design. A beam-shaping parasitic antenna array has been designed for the base station of a 4G or 5G mobile communication system and the coverage has been improved in a given area by adapting the radiation pattern of a base station. A varactor diode has been utilized to design a tunable impedance circuit and a small prototype has been made to electronically adapt the radiation pattern. A Fabry-Perot Cavity (FPC) based antenna is designed, which consists of a Partially Reflecting Surface (PRS) placed on top of a radiating element backed by a ground plane. A PRS layer is designed with a superstrate and array of parasitic elements. The parasitic elements of a PRS layer are connected with each other through dynamic loads, by tuning the loads, beamforming is implemented. An FPC based antenna has been designed for a radar application, which can steer the beam while maintaining a high gain. Moreover, beamforming antenna arrays have been designed for the automotive radar.
- Affiliations
Citations
Kayani, H. A. (2020). Beam-shaping antenna arrays for 5G communication system and automotive radar. https://hdl.handle.net/2078.5/115168