Optimizing amplitude distribution in a feed array to control side-lobe levels of a beam-steering metasurface
- Publisher:
- IEEE
- Publication Type:
- Conference Proceeding
- Citation:
- 2019 URSI International Symposium on Electromagnetic Theory, EMTS 2019, 2019, 00
- Issue Date:
- 2019-05-01
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Filename | Description | Size | |||
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Optimizing_Amplitude_Distribution_in_a_Feed_Array_to_Control_Side-Lobe_Levels_of_a_Beam-Steering_Metasurface.pdf | Published version | 642.44 kB |
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An attempt to establish analogy between the antenna array pattern synthesis theory and the metasurface beam-steering control is presented in this paper. Beam steering has been achieved by using a phase transformation metasurface, and the side-lobe level (SLL) reduction has been achieved by optimizing the excitation amplitude of feed array. Optimization has been performed by a simple evolutionary approach based on cross-entropy (CE) method, and the results validate the efficiency of the algorithm, as well as verify the concept of SLL control using excitation amplitude manipulation.
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