Designing a sub-wavelength array to change the direction of the radiation wave to a desired angle using variable Huygens surfaces
نویسندگان
1 Department of Electrical Engineering, The Iran University of Science and Technology (IUST), Tehran. Iran
2 Department of Electrical Engineering, The Iran University of Science and Technology (IUST), Tehran. Iran
3 Department of Electrical Engineering, The Iran University of Science and Technology (IUST), Tehran. Iran
doi
10.22060/eej.2024.23291.5599چکیده
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 0.2 -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.
