Dongfang Zhou
YOU?
Author Swipe
View article: A Design Method for Analog Predistortion Linearizers With Independently Tunable Gain and Phase Conversions
A Design Method for Analog Predistortion Linearizers With Independently Tunable Gain and Phase Conversions Open
In this paper, a design method for an independently tunable analog predistortion linearizer is proposed, which transforms the design of nonlinear circuits into the design of a load impedance network. First, inspired by the load-pull techni…
View article: Broadband RCS Reduction for Slot Array Antenna Using Polarisation Conversion Metasurface
Broadband RCS Reduction for Slot Array Antenna Using Polarisation Conversion Metasurface Open
A polarisation conversion metasurface (PCM) is proposed to realise broadband radar cross section (RCS) reduction of a slot array antenna. The PCM's unit cell, whose polarisation conversion ratio (PCR) is more than 88% from 8.41 to 32.28 GH…
View article: High‐isolation single‐layer dual‐mode substrate‐integrated waveguide diplexers for millimetre‐wave applications
High‐isolation single‐layer dual‐mode substrate‐integrated waveguide diplexers for millimetre‐wave applications Open
New coupling scheme substrate‐integrated waveguide (SIW) diplexers based on dual‐mode cavities are proposed for millimetre‐wave applications. Dual‐mode SIW cavities are simultaneously employed in common input and coupling cavity to produce…
View article: A low-side-lobe folded transmitarray antenna based on metasurface with independent amplitude/phase control
A low-side-lobe folded transmitarray antenna based on metasurface with independent amplitude/phase control Open
In this paper, a low-side-lobe folded transmitarray antenna (LSLFTA) based on metasurface (MS) that can independently control amplitude and phase is proposed. An MS, composed of two vertically placed polarization gates, can realize the eff…
View article: Multi-mode vortex beams generation with single-layer transmissive metasurface
Multi-mode vortex beams generation with single-layer transmissive metasurface Open
Orbital angular momentum (OAM) is a phenomenon of vortex phase distribution in free space, the infinity of whose modes and the orthogonality between modes allow it to possess great potential in enhancing channel capacity. A transmissive me…
View article: The concept of nonlinear phase shifter and its application to element of sensing RISs
The concept of nonlinear phase shifter and its application to element of sensing RISs Open
In this study, the concept of the nonlinear phase shifter is proposed to provide a new idea for the hardware architecture of sensing reconfigurable intelligent surfaces (RISs). First, the equivalent circuit of the proposed phase shifter is…
View article: Dual-mode vortex beam transmission metasurface antenna based on linear-to-circular polarization converter
Dual-mode vortex beam transmission metasurface antenna based on linear-to-circular polarization converter Open
The generation of multi-mode vortex beams at the same aperture is currently emerging as a research hotspot. In this paper, a method based on a linearly polarized-circularly polarized translational transmission metasurface (TM) is proposed …
View article: A dual-band dual-polarized low-side-lobe transmitarray using independent amplitude and phase controllable elements
A dual-band dual-polarized low-side-lobe transmitarray using independent amplitude and phase controllable elements Open
In this paper, a novel transmitarray (TA) element with independent control capability of amplitude and phase under dual-band dual-polarized operation is proposed. By changing the physical size of the TA element, the phase variation of the …
View article: A single‐layer substrate‐integrated waveguide filtering antenna with three independently controllable radiation nulls
A single‐layer substrate‐integrated waveguide filtering antenna with three independently controllable radiation nulls Open
In this paper, a single‐layer substrate‐integrated waveguide (SIW) filtering antenna with three independently controllable radiation nulls is presented. The antenna consists of a single‐layer SIW loaded with two radiation gaps, four metall…
View article: Miniaturised frequency selective surface‐based rasorber with wideband two‐sided absorption and switchable transmission/reflection band
Miniaturised frequency selective surface‐based rasorber with wideband two‐sided absorption and switchable transmission/reflection band Open
A new rasorber with a switchable transmission/reflection band between two wide absorption bands is proposed based on an ultrathin low‐profile frequency selective surface. To miniaturise the periodicity in the lossy layer, convoluted elemen…
View article: Design of a polarization selective surface for co‐channel interference suppression
Design of a polarization selective surface for co‐channel interference suppression Open
In this paper, a novel design of polarization selective surface (PSS) is proposed for co‐channel interference (CCI) suppression. By establishing a switchable doublet topology, two types of second‐order filtering responses with two transmis…
View article: Satellite Communication Effectiveness Evaluation Based on Distributed Multi-Node Receptions
Satellite Communication Effectiveness Evaluation Based on Distributed Multi-Node Receptions Open
Satellite-communication effectiveness evaluation is one of the key issues in the field of satellite communication links for satellite operation, maintenance, and emergency communication. However, conventional model-based calculation method…
View article: Electromagnetic Characteristics Calculation of FSS by the Mixed Method FDTD/Extrapolation/Cascade Method
Electromagnetic Characteristics Calculation of FSS by the Mixed Method FDTD/Extrapolation/Cascade Method Open
In this paper, a mixed method (MM) combining the advantages of finite difference time domain (FDTD), extrapolation, and matrix cascade methods is proposed. First, the hybrid algorithm combining the FDTD and extrapolation method is used to …
View article: Design of high roll‐off frequency selective surface based on single‐layer SIW cavity with fully canonical filtering responses
Design of high roll‐off frequency selective surface based on single‐layer SIW cavity with fully canonical filtering responses Open
In this paper, a novel design of high roll‐off frequency selective surface (FSS) is proposed based on a single‐layer substrate integrated waveguide (SIW) cavity. Fully canonical filtering responses with three transmission poles (TPs) and t…
View article: Balanced‐to‐unbalanced and balanced‐to‐balanced filtering rat‐race couplers using multilayer substate integrated waveguide cavities
Balanced‐to‐unbalanced and balanced‐to‐balanced filtering rat‐race couplers using multilayer substate integrated waveguide cavities Open
This study reports a class of balanced‐to‐unbalanced (BTU) and balanced‐to‐balanced (BTB) filtering rat‐race couplers (FRCs) based on multilayer substrate integrated waveguide (SIW) cavities. Input and output ports can perform the function…
View article: CD‐g‐CS nanoparticles for enhanced antibiotic treatment of <i>Staphylococcus xylosus</i> infection
CD‐g‐CS nanoparticles for enhanced antibiotic treatment of <i>Staphylococcus xylosus</i> infection Open
Summary Staphylococcus xylosus ( S. xylosus )‐induced cow mastitis is an extremely serious clinical problem. However, antibiotic therapy does not successfully treat S. xylosus infection because these bacteria possess a strong biofilm forma…
View article: Compact triple‐band HTS filter with high selectivity using self‐coupled stepped impedance resonator
Compact triple‐band HTS filter with high selectivity using self‐coupled stepped impedance resonator Open
A compact triple‐band high‐temperature superconducting (HTS) filter with high selectivity based on self‐coupled stepped impedance resonator is proposed in this Letter. By folding the two‐opened arms of the λ /2 stepped impedance resonator,…
View article: Design of Low-Profile Frequency-Selective Rasorbers Based on Three-Legged Loaded Element
Design of Low-Profile Frequency-Selective Rasorbers Based on Three-Legged Loaded Element Open
A novel low-profile dual-polarization frequency-selective rasorber (FSR) with a transmissive window in the absorption band is proposed in this paper. Based on the equivalent circuit model (ECM), the principles of the impedance design are t…
View article: High‐selective triple‐mode SIW bandpass filter using higher‐order resonant modes
High‐selective triple‐mode SIW bandpass filter using higher‐order resonant modes Open
A novel high‐selective triple‐mode substrate integrated waveguide (SIW) bandpass filter using higher‐order resonant modes is proposed in this Letter. The new triple‐mode SIW resonator is realised by the second degenerate dual modes TM 210 …
View article: Fault Inference of Electronic Equipment Based on Multi-State Fuzzy Bayesian Network
Fault Inference of Electronic Equipment Based on Multi-State Fuzzy Bayesian Network Open
The aim of this study is to extend the directive function of fault inference in test and diagnosis system for electronic equipment. There are many problems, such as presence of various types of uncertain information in test set of electron…
View article: Dual‐band bandpass filter using loop resonator with independently‐tunable passband
Dual‐band bandpass filter using loop resonator with independently‐tunable passband Open
A dual‐band microstrip bandpass filter using the rectangular loop resonator (RLR) is proposed. A microstrip open stub is implemented to perturb modes of the RLR, and the two modes form the low‐frequency passband. The stepped impendence mic…
View article: A Digital Self-Sustained Phase Shift Modulation Control Strategy for Full-Bridge LLC Resonant Converters
A Digital Self-Sustained Phase Shift Modulation Control Strategy for Full-Bridge LLC Resonant Converters Open
A digital self-sustained phase shift modulation (DSSPSM) strategy that allows for good soft switching and dynamic response performance in the presence of step variations is presented in this paper. The working principle, soft switching cha…
View article: Design of Ring-Focus Elliptical Beam Reflector Antenna
Design of Ring-Focus Elliptical Beam Reflector Antenna Open
A new method for the design of elliptical beam reflector antenna is presented in this paper. By means of the basic principles of ring-focus antenna, a circularly symmetric feed and two specially shaped reflectors are used to form an ellipt…