Designing a sub-wavelength array to change the direction of the radiation wave to a desired angle using variable Huygens surfaces

Articles in Press

Document Type : Research Article

Authors

1 MSc, Department of Electrical Engineering, The Iran University of Science and Technology (IUST), Tehran. Iran

2 Assistant Professor, Department of Electrical Engineering, The Iran University of Science and Technology (IUST), Tehran. Iran

3 Professor, Department of Electrical Engineering, The Iran University of Science and Technology (IUST), Tehran, Iran

Abstract

Since Huygens structures with phase shift lead to beam rotation, this manuscript discusses a phase shifter structure for the Huygens surface based on Tapered Slot Transition in the frequency range of 9.95-10.2 GHz using varactor diodes. By inducing an electric field along the tracks and placing diodes, the phase can be changed up to 200 degrees. With unit cells of 0.2λ -that this size is the smallest possible size for beam rotation structures - and a mega cell of 4 unit cells, incident angles of 0-15 degrees can be converted to transmitted angles of 10-45 degrees. The unit cell has been fabricated and it is shown that the measurement results are in good agreement with the simulation one.

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AUT Journal of Electrical Engineering

Articles in Press, Accepted Manuscript
Available Online from 29 November 2024

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