Abstract The sluggish charging and restricted mass transfer of cobalt‐based sulfides have provoked in cycling stability, poor rate, low initial coulombic efficiency, impeding their practical application. Developing electronic configurations heterostructures are effective methods to improve conductivity accelerate transfer. In this work, heterostructured carbon/cobalt embedded honeycomb‐like nitrogen‐doped carbon (HC@CoS 2 /CoS/NC) were proposed as a cost‐effective strategy. These composites...

As the proportion of renewable energy (RE) increases, inertia and primary frequency regulation (FR) capability power system decrease. Thus, ensuring security in scheduling model has become a new technical requirement systems with high share RE. Due to shortage conventional synchronous generators, support multi-source converters an indispensable part resources, especially variable-speed wind turbine generation (WTG) battery storage (BES). Quantitative expression FR is necessary construct...

In this letter, an on-chip bandwidth-agile film bulk acoustic resonator (FBAR) filter employing chipped fractal structure is proposed. First, by using the high longitudinal wave velocity of BaZn2Fe <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$_{{16}{-}{x}}$ </tex-math></inline-formula> ScxO27 (Ba-Zn-Fe-Sc-O) functional thin film, we have realized resonant frequency in millimeter region 5G-FR2...

ABSTRACT A novel miniaturized wideband single‐layer circularly polarized metasurface antenna using coplanar waveguide (CPW)‐fed and hybrid is proposed. To miniaturize the antenna, a embedded structure composed of multiple slotted rectangles small introduced. By embedding metallic patches, additional capacitance introduced in gaps, which lowers resonance frequency significantly reduces its size. Circularly radiation realized as inclined CPW feeder excites degenerate modes metasurface, exhibit...

The stochastic resonance (SR) phenomenon for a time-delayed fractional nonlinear system subjected to multiplicative and additive noise excited by square-wave signal dichotomous is investigated. By virtue of generalized harmonic function technique, applying small delay approximation adiabatic approximation, the output signal-to-noise (SNR) deduced. research result shows that double SR occurs when SNR varies with exponent strengths noise. One peak appears changes damping coefficient time.

After undergoing peeling-machine operations, skinned garlic cloves affect subsequent processing, and their manual removal is harmful to health. In this paper, an intelligent garlic-clove-removal test bench was designed, which mainly included a hopper, lifter, vibration conveyor, conveyor belt, visual system, robot, control cabinet, frame, etc. A technical method based on machine vision technology distinguish whether or not had skin explored ensure that the could complete recognition of...

A novel uniplanar electromagnetic bandgap (EBG) structure incorporated with spiral-shaped capacitor and meandered line inductor (SC-ML-EBG) is presented. This significantly enlarges the fringe capacitance in a spiral shape to reduced-sized cells, as well increases equivalent inductance widen relative bandwidth. Its design details are given several experimental results presented; improved properties of proposed SC-ML-EBG examined, comparison conventional UC-EBG one EBG only (SC-EBG).

In this study, a dual‐band waveguide filter based on micromachining fabrication process in terahertz is proposed. The proposed employs pair of four‐stage rectangular resonators the parallel structure and centre frequencies two passbands are designed at 240 300 GHz with relative bandwidths 4.2 3.3%. isolation between has been achieved over 40 dB. simulated measured results good agreement can be applied millimetre wave communication systems.

A series of novel continuous inverse modes based on current element is proposed. The mode extended by increasing the coefficient in equation traditional class F power amplifier (PA). theoretical analysis shows that new can provide a wide matching space for design broadband high efficiency PAs. To prove this theory, wideband PA designed and fabricated. experimental test results show drain 65–78% 1.8–3G frequency range. obtain output from 12.9 to 21 W gain 10 13.3 dB interesting

In this paper, a resistive-reactive series of continuous inverse modes is proposed for extending bandwidth the Inverse mode (SICM). A broadband class F power amplifier (PA), which operates across 2.5–4.1 GHz (48.5% bandwidth), designed by using bare GaN HEMT to prove theory. Experiment results indicate that PA mentioned above able output 9.1–18.4 W saturation and drain efficiency can reach 47%–75% in whole interested band. The average 14.2 60.1%.

A tri-band cross-coupling bandpass filter (BPF) with rectangular defected ground structure (DGS) array is proposed in this paper. Cross-coupling paths comprised of five resonators are employed to achieve general Chebyshev filtering frequency responses. Besides changing gaps among resonators, a novel DGS exactly meet coupling coefficients for specific demands different passband multi-band BPF. The centre the that selected at 2.4, 3.4, 5.5 GHz LTE, Bluetooth, WiMAX and WLAN. 3 dB bandwidth...

This paper studies the electromagnetic properties of defected ground structure (DGS) with von Koch snowflake fractals. First, fractal is employed in dumbbell shaped DGS, and we have discovered that it has characteristics a low-pass filter out-of-band rejection increases iterations. In consideration fabrication accuracy performance, third iteration been adopted. Based on this structure, designed narrow-band wide-band to verify our theory. From simulated measured results, can see level greatly...

In this paper, a wideband model for on-chip interconnects with different shielding structures is proposed. order to improve the performance of interconnects, solid ground, floating shields, and parallel ground shields are often employed in real applications. Based on transmission line theory electromagnetic wave theory, these three analyzed discussed. Also, many parasitic effects such as eddy current, skin effect, proximity substrate loss have been taken into consideration precision proposed...

In this paper, a tunable dual-band bandpass filter using asymmetrical varactor-loaded half-wavelength resonators (HWR) and defected ground structure (DGS) is proposed. First, varactors are added at the end of conventional HWRs to change their resonant frequencies. And determine bandwidth passbands, coupling coefficients calculated requirements based on theoretical analyses. However, isolation will deteriorate if passbands tuned close each other. Then in order solve problem, pair circular DGS...

This paper proposes a new control method to regulate the power flow into multiple receivers. system consists of one transmitter controller and three receiver controllers. They work independently decide distribution with their combined operation. The simulated experimental models have been built, results are in good agreement theoretical analysis results. proposed is robust, flexible, generalizable, can be employed under various wireless charging conditions.

The idea of variable step-size was introduced into the Hybrid Affine Projection Algorithm (H-APA) and we propose two step size algorithms based on H-APA, which are called Variable Step-Size (VSS-H-APA) Modified (MVSS-H-APA). These variable-step aim to further improve robust performance convergence speed H-APA under non-Gaussian noise. This allows for faster while maintaining stability. MVSS-H-APA goes than VSS-H-APA estimate noise in order achieve better performance. proposed algorithm...

Far-end crosstalk (FEXT) can be a problem in the design of printed circuit boards (PCB) for incoming fifth generation double data rate (DDR5). In this paper, FEXT mitigation method is proposed. This adds an additional layer homogeneous dielectric substrate with or without metal to make transmission line more homogeneous. Therefore, capacitive cancel out inductive at far end. our research, lines tabbed routing are analyzed and simulated. Finally, frequency-domain time-domain simulated results...

ABSTRACT In this article, a novel dual‐band bandpass filter using composite right/left handed (CRLH) triangle mushroom structure and defected ground (DGS) is proposed. The proposed uses as the CRLH transmission line to achieve low‐in‐band insertion loss compact size, DGS out‐band rejection. Simulation measurement results are in good agreement properties mentioned above have been verified. It proved that can be both used reduce size of increase rejection between passbands multipassband...