A5064030831- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Metamaterials and Metasurfaces Applications
- Microwave Engineering and Waveguides
- Antenna Design and Optimization
- Electromagnetic Scattering and Analysis
- Energy Harvesting in Wireless Networks
Gdańsk University of Technology
2024
Semnan University
2018-2020
A new structure for transmitarray antennas is presented. The proposed semiplanar keeps certain geometrical curvature, that the required transmission phase range reduced significantly from 360°, causing an increase in bandwidth and efficiency. antenna has varied element thickness-the central being thinnest elements growing thickness as we move toward edges. To evaluate model, X-band prototype fabricated with number of layers 2 to 5 center edges aperture. was 360° 51.5°. Measurement results...
This article presents an optimized dual-polarized transmitarray antenna (TA) designed for MIMO applications at the Ka-band, capable of switching beams in two directions. The aperture uses a small unit cell with three layers Taconic RF-35 dielectric substrates, which can be easily fabricated using PCB technology. achieved 360-degree phase shift and transmission magnitude exceeding -0.4 dB 28 GHz. We used nine patch antennas cross shape, each 10.5 dBi gain GHz, to switch directions without...
Having studied the transmitarray antennas, it is found that cells depending on their location antenna aperture should have a specific slope in transmission phase diagram terms of frequency. The central cell has most negative slope, and as long centre farther away, frequency reduced. Therefore, ability to change unit essential. To validate proposed approach, by providing suitable cell, typical X‐band with an size 20.55 λ 0 2 at 10 GHz been designed, fabricated, tested. In order evaluate...
A novel high-gain and low-profile transmitarray antenna, operating at 28 GHz, is presented in this paper. four-layer metal-only element used to achieve a full transmission phase range of 360° for magnitude equal or better than −1.2 dB. with main beam the broadside direction simulated via CST software. The simulation results show that designed antenna an aperture size 95.25 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> has 26 dBi...