A5001245983- Microwave Engineering and Waveguides
- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Millimeter-Wave Propagation and Modeling
- Superconducting and THz Device Technology
Beijing Institute of Technology
2022-2025
Chinese University of Hong Kong
2024
A phased array antenna (PAA) with wide beam scanning range (BSR) composed of fully metallic lens subarrays is proposed. Each subarray designed based on a partial Maxwell fish-eye (PMFE) lens, which provides linear quasi-focal line and wide-angle scanning, achieved by the combination passive switching phase shifting control. The PMFE lenses are realized parallel plate waveguides (PPWs) loaded nonuniform nails. To meet requirement spacing, miniaturization element staggering arrangement...
A lens array based on partial Maxwell fish-eye (PMFE) is proposed in this paper. The designed as a staggered up and down structure the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$y$</tex> -direction to keep unit spacing at xmlns:xlink="http://www.w3.org/1999/xlink">$2\lambda_{0} (\lambda_{0}$</tex> wavelength free space) for low sidelobe levels (SLLs). Each PMFE fed by WR28 standard rectangular waveguide placed straight line, which...
A millimeter-wave (MMW) fully metallic periodic leaky-wave antenna (PLWA) with continuous wide-angle beam steering from backward to forward is presented. In order obtain large scanning angle, the guiding structure of based on bilateral corrugated parallel-plate waveguide (PPW) working in <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$Ka$</tex> band and corrugations within each radiating unit are designed have different depth. The same range...
In this paper, the miniaturization methods of circularly polarized helix antennas are proposed, including folding radiating arms and inserting high permittivity material. Two corresponding designed fabricated to verify methods. The axial lengths effectively reduced by about 55% 41%, respectively. By applying feeding networks based on Wilkinson power dividers, respectively obtain impedance bandwidths 22% 13% with voltage standing wave ratio (VSWR) < 1.5. measured results agree well...