Guo Qing Luo
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View article: A High‐Gain Planar Endfire Circularly Polarized Antenna With Small Aperture Based on Slotted Substrate Integrated Waveguide
A High‐Gain Planar Endfire Circularly Polarized Antenna With Small Aperture Based on Slotted Substrate Integrated Waveguide Open
In this paper, we present the design of a planar endfire circularly polarized (CP) antenna utilizing a periodic structure. The CP antenna is constructed on substrate integrated waveguide (SIW) that incorporates a periodic double‐sided rect…
View article: Icarisid Ⅱ modulates mitochondrial dynamics for anti-HBV activity
Icarisid Ⅱ modulates mitochondrial dynamics for anti-HBV activity Open
Introduction To investigate the potential anti-hepatitis B virus (HBV) activity of Icariside Ⅱ (ICS Ⅱ), and elucidate its underlying mitochondrial dynamics mechanisms. Methods The study employed in vivo and in vitro assays to evaluate anti…
View article: A High-Gain Series-Parallel Millimeter-Wave SIW Cavity-Backed Patch Array
A High-Gain Series-Parallel Millimeter-Wave SIW Cavity-Backed Patch Array Open
This paper presents a wideband and high-gain 4 × 4 substrate integrated waveguide (SIW) cavity-backed patch array with a simplified feeding network for operation in the millimeter-wave (mmW) band. Furthermore, to improve gain and suppress …
View article: Wide Stopband Substrate Integrated Waveguide Filter Using Bisection and Trisection Coupling in Multilayer
Wide Stopband Substrate Integrated Waveguide Filter Using Bisection and Trisection Coupling in Multilayer Open
This article presents a highly efficient method for substrate-integrated-waveguide (SIW) filters to achieve very wide stopbands. By employing the proposed trisection slots in addition to the bisection slots as the inter-coupling structures…
View article: Switchable frequency‐selective rasorber/absorber based on single‐sheet structure
Switchable frequency‐selective rasorber/absorber based on single‐sheet structure Open
A single‐sheet structure‐based switchable broadband FSR/absorber is proposed. The lossy layers I, II, and the FSS are printed along the direction of electromagnetic (EM) wave propagation (z‐direction) at the top, middle, and bottom positio…
View article: Plasmonic skyrmions with bound states in the continuum
Plasmonic skyrmions with bound states in the continuum Open
Plasmonic skyrmions are a subject of significant interest due to their potential applications in optics, photonics, and electromagnetic wave technology. These skyrmions are created by the interference of surface plasmon polaritons or spoof…
View article: Microwave Plasmonic Exceptional Points for Enhanced Sensing
Microwave Plasmonic Exceptional Points for Enhanced Sensing Open
The emergence of exceptional points in a non‐Hermitian system has provided intriguing possibilities to enhance the sensitivity of a sensor, while it is yet a considerable challenge to implement subwavelength non‐Hermitian systems. One poss…
View article: Highly Efficient Dual-Beam Frequency Scanning Based on SSPPs With Parasitic Patch Array
Highly Efficient Dual-Beam Frequency Scanning Based on SSPPs With Parasitic Patch Array Open
A leaky-wave antenna (LWA) realizes radiation of travelling wave along guiding structures. Periodic modulation is an effective approach to turn non-radiating modes into radiating modes. A high-efficient LWA based on spoof surface plasmon p…
View article: Unequal Bandpass Filtering Power Divider Based on Hybrid HMSIW-SSPP Modes
Unequal Bandpass Filtering Power Divider Based on Hybrid HMSIW-SSPP Modes Open
This letter presents a novel unequal bandpass filtering power divider based on hybrid-mode of half mode substrate integrated waveguide (HMSIW) and spoof surface plasmon polaritons (SSPPs). Bandpass response is achieved by combining the tra…
View article: Underdetermined Direction-of-Arrival Estimation with Coprime Array via Atomic Norm Minimization
Underdetermined Direction-of-Arrival Estimation with Coprime Array via Atomic Norm Minimization Open
The coprime array provides the possibility of resolving more signals than the sensors for the direction-of-arrival (DOA) estimation application. However, the non-consecution of its virtual array raises challenges for making full use of the…
View article: Compact and wideband filtenna for circularly polarised application
Compact and wideband filtenna for circularly polarised application Open
A compact single M‐shaped probe fed circularly polarised filtenna (filtering antenna) without extra filtering circuit is presented in this study, in which three pair slots with different lengths are etched on its parasitic patch to produce…
View article: A Horizontally Polarized Omnidirectional Antenna Based on Spoof Surface Plasmons
A Horizontally Polarized Omnidirectional Antenna Based on Spoof Surface Plasmons Open
As an analog of the role of surface plasmons in optical antenna, spoof surface plasmons enable far-field radiation of antenna at microwave frequencies. Here, a plasmonic metamaterial supporting spoof surface plasmons is experimentally demo…
View article: A Novel Tri-Beam Antenna System Based on U-Shaped Dipole
A Novel Tri-Beam Antenna System Based on U-Shaped Dipole Open
Consisting of 6 radiating elements and a 3×3 Butler matrix, a novel tri-beam antenna system is proposed in this paper. The radiating element consists of two U-shaped arms and coupled strips, which shows a wide impedance characteristic. Thr…
View article: Compact Dual-Broadband Dual-Polarized Antenna With Additional Ground Platform
Compact Dual-Broadband Dual-Polarized Antenna With Additional Ground Platform Open
A compact dual-polarized antenna element covering the frequency bands of 0.773~1.0405 GHz and 1.69~2.83 GHz is proposed in this paper. The nested scheme is adopted and the performances of the lower- and upper-band element are analyzed, res…
View article: Wideband Direction-of-Arrival Estimation With Arbitrary Array via Coherent Annihilating
Wideband Direction-of-Arrival Estimation With Arbitrary Array via Coherent Annihilating Open
In this paper, a new wideband DOA estimation method for arbitrary array application is proposed. The arbitrary array manifold is approximately decomposed under the concept of manifold separation technique (MST) and a linear combination of …
View article: Integration Design of Millimeter-Wave Filtering Patch Antenna Array With SIW Four-Way Anti-Phase Filtering Power Divider
Integration Design of Millimeter-Wave Filtering Patch Antenna Array With SIW Four-Way Anti-Phase Filtering Power Divider Open
In this paper, the integration design of a millimeter-wave filtering patch antenna array fed by a substrate integrated waveguide (SIW) four-way anti-phase filtering power divider is proposed. The multilayer four-way anti-phase filtering po…
View article: Formation of Finite-Time Singularities in the 3D Axisymmetric Euler Equations: A Numerics Guided Study
Formation of Finite-Time Singularities in the 3D Axisymmetric Euler Equations: A Numerics Guided Study Open
Whether the three-dimensional incompressible Euler equations can develop a singularity in finite time from smooth initial data is one of the most challenging problems in mathematical fluid dynamics. This work attempts to provide an affirma…
View article: 3D Band-Absorptive Frequency Selective Rasorber: Concept and Analysis
3D Band-Absorptive Frequency Selective Rasorber: Concept and Analysis Open
This paper presents a 3D band-absorptive frequency selective rasorber (FSR). Such an FSR is absorptive within a specific band and almost transparent below the absorption band. The definition and evaluation of the band-absorptive FSR is ini…
View article: Digital Suppression of Transmitter Leakage in FDD RF Transceivers With an Enhanced Low-Sampling Rate Behavioral Model
Digital Suppression of Transmitter Leakage in FDD RF Transceivers With an Enhanced Low-Sampling Rate Behavioral Model Open
With continuously increasing of signal bandwidth, the transmitter leakage issue in frequency division duplexer (FDD) transceivers becomes severer. In this letter, an enhanced behavioral model is proposed to suppress FDD transmitter leakage…
View article: 3D Absorptive Frequency-Selective Reflection and Transmission Structures With Dual Absorption Bands
3D Absorptive Frequency-Selective Reflection and Transmission Structures With Dual Absorption Bands Open
This paper presents a 3D absorptive frequency-selective reflection structure (AFSR) and absorptive frequency-selective transmission structure (AFST) with one reflection/transmission band and two absorption bands. The 3D AFSR utilizes the i…
View article: Dual-Polarized Omnidirectional Antenna With High Isolation Based on the Theory of Characteristic Modes
Dual-Polarized Omnidirectional Antenna With High Isolation Based on the Theory of Characteristic Modes Open
A dual-polarized antenna with omnidirectional radiation and high isolation performance is proposed in this paper. The proposed antenna consists of courtyard-shaped metal frame, feeding network, and metal background. Working mechanism of th…
View article: Direction-of-Arrival Estimation With ULA: A Spatial Annihilating Filter Reconstruction Perspective
Direction-of-Arrival Estimation With ULA: A Spatial Annihilating Filter Reconstruction Perspective Open
Direction-of-arrival (DOA) estimation under low signal-to-noise ratio (SNR) and snapshot deficient scenarios has practical application value. Since the array output of the uniform linear array (ULA) can be viewed as a linear combination of…
View article: A Wideband Quad-Polarization Reconfigurable Metasurface Antenna
A Wideband Quad-Polarization Reconfigurable Metasurface Antenna Open
A low-profile wideband metasurface antenna with quad-polarization reconfiguration ability is presented in this paper. The proposed metasurface antenna is composed of a square patch, a metasurface formed by a lattice of 4 × 4 periodic metal…
View article: Controlled vapour-phase deposition synthesis and growth mechanism of Bi2Te3 nanostructures
Controlled vapour-phase deposition synthesis and growth mechanism of Bi2Te3 nanostructures Open
This work presents a study on the controlled growth and the growth mechanism of vapour-phase deposited two-dimensional Bi2Te3 nanostructures by investigating the influence of growth conditions on the morphology of Bi2Te3 nanostructures. Th…
View article: Pointwise Inequalities for Elliptic Boundary Value Problems
Pointwise Inequalities for Elliptic Boundary Value Problems Open
We introduce a new approach to obtaining pointwise estimates for solutions of elliptic boundary value problems when the operator being considered satisfies a certain type of weighted integral inequalities. The method is illustrated on seve…
View article: Advances in Low-Profile Antennas in Wireless Communications 2015
Advances in Low-Profile Antennas in Wireless Communications 2015 Open
Although low-profile antennas designs have been widely studied in the past years, there are still many challenging issues in low-profile antennas in