Shi‐Wei Qu
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View article: A Compact Ultrawideband Circularly Polarized Antenna Based on Miniaturized Phase Shifter
A Compact Ultrawideband Circularly Polarized Antenna Based on Miniaturized Phase Shifter Open
In this article, a compact wideband circularly polarized antenna based on a miniaturized phase shifter with ultra-wideband operation is proposed. The proposed antenna is comprised of a pair of compact orthogonal ultra-wideband Vivaldi ante…
View article: Compact unidirectional waveguide grating emitter with enhanced wavelength sensitivity based on the hybrid plasmonic mode
Compact unidirectional waveguide grating emitter with enhanced wavelength sensitivity based on the hybrid plasmonic mode Open
Waveguide grating antennas are widely adopted in beam-steering devices, typically enabling the beam steering in longitudinal direction within a two-dimensional scanning optical array by changing the input wavelength. However, traditional w…
View article: A Conformal Phased Array with Low Profile and Wide-Scanning Performance for SAR Application
A Conformal Phased Array with Low Profile and Wide-Scanning Performance for SAR Application Open
A low-profile wide-scanning conformal phased array (CPA), with cavity-backed stacked patch elements, is presented in this paper. To reduce the array profile, a partially dielectric-filled cavity is employed in each element, and to enhance …
View article: Magneto‐electric dipole antenna array for 77 GHz automotive radar
Magneto‐electric dipole antenna array for 77 GHz automotive radar Open
A 1 × 4 magneto‐electric dipole (ME dipole) antenna array for 77 GHz automotive radar is proposed. The ME dipole is fed by a fork‐shaped microstrip line coupling through a dog‐bone slot. To meet the requirements aimed at automotive radar a…
View article: 2–18 GHz dual‐polarised tightly coupled dipole array with ±75° scanning range
2–18 GHz dual‐polarised tightly coupled dipole array with ±75° scanning range Open
The authors proposed an ultrawideband (UWB) dual‐polarised tightly coupled dipole array (TCDA). A split X‐shaped resistive frequency selective surface (FSS) is utilised, which can get more admirable impedance matching. The proposed antenna…
View article: Low-Profile Dual-Band Reflector Antenna for High-Frequency Applications
Low-Profile Dual-Band Reflector Antenna for High-Frequency Applications Open
A high-gain low-profile reflector antenna with dual-band radiation ability is presented in this paper. The antenna achieves a relative 2 dB gain bandwidth of 10% around fl, and a relative 2 dB gain bandwidth of 20%, around fh, where fl and…
View article: High-Gain Millimeter-Wave Beam Scanning Transmitarray Antenna
High-Gain Millimeter-Wave Beam Scanning Transmitarray Antenna Open
In this article, a high-gain millimeter-wave transmitarray antenna (TAA) maintaining scanning ability is developed, integrating an array feed as the primary emitter. The work is achieved within a limited aperture area, avoiding the replace…
View article: All-plasmonic optical leaky-wave antenna with a low sidelobe level
All-plasmonic optical leaky-wave antenna with a low sidelobe level Open
Optical antennas have received considerable attention in recent years due to their unique ability to convert localized energy to freely propagating radiation and vice versa. Sidelobe level (SLL) is one of the most crucial parameters in ant…
View article: Low profile conformal phased array with wide scanning range
Low profile conformal phased array with wide scanning range Open
A linearly polarized conformal phased array antenna with a low profile and a large scanning range is proposed, based on stacked patch antenna element fed by a coupled microstrip line. A backed compact cavity is designed in the antenna elem…
View article: Metasurface-based Fourier lens fed by compact plasmonic optical antennas for wide-angle beam steering
Metasurface-based Fourier lens fed by compact plasmonic optical antennas for wide-angle beam steering Open
A Fourier lens can perform the Fourier transform of an incident wavefront at the focal plane. This paper reports a metasurface-based Fourier lens fed by compact plasmonic optical antennas for wide-angle beam steering. The metasurface, comp…
View article: Current Sheet Antenna Array and 5G: Challenges, Recent Trends, Developments, and Future Directions
Current Sheet Antenna Array and 5G: Challenges, Recent Trends, Developments, and Future Directions Open
Designing an ultra-wideband array antenna for fifth generation (5G) is challenging for the antenna designing community because of the highly fragmented electromagnetic spectrum. To overcome bandwidth limitations, several millimeter-wave ba…
View article: Fully integrated wideband phased array with large scan range and 5:1 bandwidth
Fully integrated wideband phased array with large scan range and 5:1 bandwidth Open
In this work, a fully integrated phased array using multi‐layer printed circuit board (PCB) fabrication technologies is presented. This array is directly fed by 50 Ω coaxial cables, without balanced‐to‐unbalanced transitions. An asymmetric…
View article: Design of a Low-Crosstalk Sub-Wavelength-Pitch Silicon Waveguide Array for Optical Phased Array
Design of a Low-Crosstalk Sub-Wavelength-Pitch Silicon Waveguide Array for Optical Phased Array Open
In this work, a compact sub-wavelength-pitch silicon waveguide array with low crosstalk is proposed and analyzed. The crosstalk is suppressed by periodic silicon nano-blocks symmetrically arranged along the silicon strip waveguides. The si…
View article: Lab on optical fiber: surface nano-functionalization for real-time monitoring of VOC adsorption/desorption in metal-organic frameworks
Lab on optical fiber: surface nano-functionalization for real-time monitoring of VOC adsorption/desorption in metal-organic frameworks Open
Metal-organic framework (MOF) nanomaterials are emerging porous coordinative polymers with large surface area and high porosity. Their application scenarios highly depend on adsorption/desorption dynamics of guest molecules in the framewor…
View article: High-efficiency unidirectional vertical emitter achieved by an aperture-coupling nanoslot antenna array
High-efficiency unidirectional vertical emitter achieved by an aperture-coupling nanoslot antenna array Open
Coupling light from in-plane guided light into free space or optical fibers is crucial for many photonic integrated circuits and vice versa. However, traditional grating couplers or waveguide grating antennas suffer from low upward couplin…
View article: Polarization-division and spatial-division shared-aperture nanopatch antenna arrays for wide-angle optical beam scanning
Polarization-division and spatial-division shared-aperture nanopatch antenna arrays for wide-angle optical beam scanning Open
Chip-based optical beam scanners hold promise for future compact high-speed light detection and ranging (LIDAR) systems. Many of the demonstrated chip-based optical beam scanners are designed based on diffraction-based waveguide gratings a…
View article: Correction to “Microstrip Array Antenna With 2-D Steerable Focus in Near-Field Region” [Sep 17 4607-4617]
Correction to “Microstrip Array Antenna With 2-D Steerable Focus in Near-Field Region” [Sep 17 4607-4617] Open
Li et al. [1] would like to point out several errors in the article.
View article: Design and Fabrication of Wideband Dual-Polarized Dipole Array for 5G Wireless Systems
Design and Fabrication of Wideband Dual-Polarized Dipole Array for 5G Wireless Systems Open
This paper presents simulation and measurement results of a wideband planar phased array for 5G. The desired wideband operation is achieved using a tightly coupled dipole array (TCDA). The proposed array consists of tightly coupled dipole …
View article: Low-Profile High-Gain and Wide-Angle Beam Scanning Phased Transmitarray Antennas
Low-Profile High-Gain and Wide-Angle Beam Scanning Phased Transmitarray Antennas Open
Combining the inherent multiple beam capabilities of transmitarray antennas (TAAs) and the flexible fields launched by phased array antennas (PAAs), PAA-fed TAAs are proposed in this paper for high-gain and wide-angle beam scanning in mill…
View article: Efficient unidirectional and broadband vertical-emitting optical coupler assisted by aperture-coupled nanopatch antenna array
Efficient unidirectional and broadband vertical-emitting optical coupler assisted by aperture-coupled nanopatch antenna array Open
Vertical-emitting optical couplers that convert in-plane guided light to out-of-plane emission are crucial elements for future photonic integrated circuits. However, traditional vertical-coupling elements, such as grating couplers, by defa…
View article: Wideband Tightly Coupled Dipole Arrays With Balanced Scattering and Radiation Based on a Black-Box Method
Wideband Tightly Coupled Dipole Arrays With Balanced Scattering and Radiation Based on a Black-Box Method Open
A key challenge in the new generation of advanced phased arrays is to realize wideband and wide-scanning performances while maintaining lower scattering characteristics. In this paper, a black box method (BBM) is proposed for accelerating …
View article: A Cylindrical Lens Antenna With Extremely Flat Beams
A Cylindrical Lens Antenna With Extremely Flat Beams Open
This paper presents an extremely flat-beam cylindrical lens antenna with a 180 mm ($36~\lambda$ ) diameter lens at 60 GHz. The parameters of lens antennas in the horizontal plane i.e. dielectric constants, radii, and focal length are optim…
View article: Realization of multiple orbital angular momentum modes simultaneously through four-dimensional antenna arrays
Realization of multiple orbital angular momentum modes simultaneously through four-dimensional antenna arrays Open
Electromagnetic waves carrying orbital angular momentum (OAM) in radio frequency range have drawn great attention owing to its potential applications in increasing communication capacity. In this paper, both single-pole single-throw (SPST)…
View article: All-plasmonic Optical Phased Array Integrated on a Thin-film Platform
All-plasmonic Optical Phased Array Integrated on a Thin-film Platform Open
Optical phased arrays have been demonstrated to enable a variety of applications ranging from high-speed on-chip communications to vertical surface emitting lasers. Despite the prosperities of the researches on optical phased arrays, prese…
View article: Flat Terahertz Reflective Focusing Metasurface with Scanning Ability
Flat Terahertz Reflective Focusing Metasurface with Scanning Ability Open
The ability to manipulate the propagation properties of electromagnetic waves, e.g., divergence, focusing, holography or deflection, is very significant in terahertz applications. Metasurfaces with flat structures are attractive for achiev…
View article: Loss control between symmetric and anti-symmetric modes for single-lobed surface emitting of terahertz quantum cascade laser
Loss control between symmetric and anti-symmetric modes for single-lobed surface emitting of terahertz quantum cascade laser Open
Single-mode surface-emitting distributed feedback terahertz (THz) quantum cascade lasers (QCLs) operating around 2.76 THz are investigated in metal-metal waveguide. The design consists of one conventional long slit and two additional short…