Compact transition enabled broadband propagation of spoof surface plasmon polaritons based on the equivalent circuit model

2022 ◽  
Author(s):  
Dawei Zhang ◽  
Xin Liu ◽  
Yaxiu Sun ◽  
Kuang Zhang ◽  
Qun Wu ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Optimization Design ◽  
High Efficiency ◽  
Three Dimensional ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Equivalent Model ◽  
3D Simulations ◽  
Impedance Characteristics ◽  
Low Pass

Abstract In this paper, a strategy to develop a compact transition of the spoof surface plasmon polariton (SSPP) transmission line (TL) is proposed. First, an equivalent distributed circuit model is employed for the theoretical analysis and optimization design of the SSPP unit. The mapping relation between the unit performance and the geometric parameters is deduced from the transmission matrix. The calculated results are compared with the numerical ones from the three-dimensional (3D) simulations for validation. Then, a compact transition (only 0.26λg) is built with only two matching units and a tapered strip through optimizations. The optimizations are implemented with the circuit simulations based on the equivalent model, which can remarkably save time in comparison with the 3D simulations. The transition principle is also explained by quantitatively extracting the dispersion properties and impedance characteristics. Finally, a prototype of the proposed SSPP TL is fabricated and measured for demonstration. The measured operating band (0-7.7 GHz) is almost up to the cut-off frequency (about 8 GHz), which remains the inherent broadband low-pass transmission characteristics. Meanwhile, the measured in-band return loss is almost higher than 10dB, which verifies the high-efficiency propagation. This work can pave the way for building up a new SSPP-based framework of microwave circuits.

scholarly journals Numerical and Circuit Modeling of the Low-Power Periodic WPT Systems

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2651 ◽  
Author(s):  
Adam Steckiewicz ◽  
Jacek Maciej Stankiewicz ◽  
Agnieszka Choroszucho
Keyword(s):  
Numerical Model ◽  
Low Power ◽  
Three Dimensional ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Wireless Power ◽  
The Finite Element Method ◽  
Charging System ◽  
Analytical Formulae ◽  
Similar Accuracy

This article presents a method for analysis of the low-power periodic Wireless Power Transfer (WPT) system, using field and circuit models. A three-dimensional numerical model of multi-segment charging system, with periodic boundary conditions and current sheet approximation was solved by using the finite element method (FEM) and discussed. An equivalent circuit model of periodic WPT system was proposed, and required lumped parameters were obtained, utilizing analytical formulae. Mathematical formulations were complemented by analysis of some geometrical variants, where transmitting and receiving coils with different sizes and numbers of turns were considered. The results indicated that the proposed circuit model was able to achieve similar accuracy as the numerical model. However, the complexity of model and analysis were significantly reduced.

Optimal Design and Experimental Study on 500SM35 Type Centrifugal Pump

2010 ◽  
Vol 29-32 ◽  
pp. 1003-1007
Author(s):  
Ming Wei Hou
Keyword(s):  
Centrifugal Pump ◽  
Optimization Design ◽  
High Efficiency ◽  
Experimental Studies ◽  
Three Dimensional ◽  
Multi Objective Optimization ◽  
Centrifugal Pumps ◽  
Design Specification ◽  
Turbulence Flow ◽  
Hydraulic Design

To make the high efficiency and energy-saving centrifugal pump, using multi-objective optimization design to make hydraulic design of the 500SM35 centrifugal pumps, using CFD technology to simulate the three-dimensional turbulence flow in pump, also make performance experiment and cavitation experiment of the 500SM35 centrifugal pump that have been self-developed. Experimental studies have shown that: the 500SM35 centrifugal pump’s prototype performance parameters all beyond design specification.

Optimization Design of a New Heavy-Duty Self-Unloading Semi-Trailer

2011 ◽  
Vol 317-319 ◽  
pp. 2373-2377
Author(s):  
Guo Juan Shang ◽  
Gen Li Shan ◽  
Xi Juan Qi
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Optimization Design ◽  
Market Research ◽  
High Efficiency ◽  
Three Dimensional ◽  
Element Model ◽  
Loading Capacity ◽  
Heavy Duty ◽  
The Finite Element Model

Based on sufficient market research, a new model of self-unloading semi-trailer, whose maximum loading capacity is 30 tons, has been designed. The paper describes its overall structure, the three-dimensional diorama model and the finite element model of the frame. Based on the analysis of the models and the results of the calculation, the parameters of the frame are optimized. The advantages of the new design are as follows: the new design makes the most of the advantages of self-unloading trailers and semi-trailers, that is, self-unloading, security, stability, high efficiency, environmental protection.

The Development of Virtual Design Platform for Couplings

2012 ◽  
Vol 580 ◽  
pp. 288-291
Author(s):  
De Gong Chang ◽  
Hong Yun Dou ◽  
Guang Zhen Zhou ◽  
Li Zeng Zhang
Keyword(s):  
Optimization Design ◽  
High Efficiency ◽  
Three Dimensional ◽  
Fem Analysis ◽  
Parametric Modeling ◽  
Virtual Design ◽  
Experiment Data ◽  
Virtual Technology ◽  
Analysis Experiment ◽  
Universal Coupling

This platform is based on virtual technology, taking the twin tripod slider universal coupling as three-dimensional solid model and integrating the functions of Pro/E and ANSYS. Using JAVA and VRML language develop and build the intelligent virtual design platform, which includes the parametric modeling, FEM Analysis, experiment data testing and optimization design. Based on this platform, we can achieve high efficiency of coupling’s design and research.

Optimization Design of Coordinate Measuring Machine Based on ANSYS Software

2010 ◽  
Vol 42 ◽  
pp. 453-456
Author(s):  
Yong Gang Yan ◽  
Yan Qin Li ◽  
Zhan Kui Wang
Keyword(s):  
Optimization Design ◽  
Large Scale ◽  
High Efficiency ◽  
Design Method ◽  
Three Dimensional ◽  
Coordinate Measuring Machine ◽  
National Defense ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Measuring Machine

Coordinate measuring machine (CMM) is a large-scale geometrical detecting instrument. It is of high accuracy, high efficiency simple operation and automation. So, it can ensure the product quality for modern mechanical manufacture industry, and is widely used in the industry such as aircraft, automobile, military and national defense. However, it does not meet gradually the requirement of modern industry because of its measuring accuracy. How to monitor geometrical error rapidly and high accurately is a key research project. To solve the problem, some studies have been carried out. In this paper, a coordinate measuring machine was firstly designed by modern design method. Three dimensional model is built using PRO/E software. And some key components were optimized by using finite element analysis method. The simulating results show that the size and structure of the designed coordinate measuring machines are optimized and improved relate to previous CMM. This study will play an important instructing role for us in studying a novel CMM.

Study on Numerical Simulation and Performance Test of Tubular Pumping System

2013 ◽  
Author(s):  
Yan Jin ◽  
Chao Liu ◽  
Li Cheng
Keyword(s):  
Numerical Simulation ◽  
Optimization Design ◽  
Performance Test ◽  
High Efficiency ◽  
Stokes Equations ◽  
Three Dimensional ◽  
Operating Conditions ◽  
Navier Stokes ◽  
Rotating Speed ◽  
Pumping System

Research on three-dimensional flow field in a tubular pumping system using numerical simulation based on the Reynolds time-averaged Navier-Stokes equations and the RNG k–ε turbulent model. By using this method, the performance of pumping system such as head, shaft power and efficiency are predicted based on the calculation of different operating conditions in the discharge range from 20L/s to 35L/s at the same rotating speed. For verifying the accuracy and reliability of the calculation results, a tubular pumping system bedstand is designed for the permarmance test. The comparison of simulation results and the experiment data shown that the calculation performances close agreement with the experiment results in the high efficiency area, but in the condition of large discharge and low discharge, deviations were existed between the two results. Combining with the results of numerical simulation and experiment, which can provide more evidences for the hydraulic performances prediction and optimization design of pumping system.

scholarly journals Equivalent Resonant Circuit Modeling of a Graphene-Based Bowtie Antenna

Electronics ◽  
2018 ◽  
Vol 7 (11) ◽  
pp. 285 ◽  
Author(s):  
Bin Zhang ◽  
Jingwei Zhang ◽  
Chengguo Liu ◽  
Zhi Wu ◽  
Daping He
Keyword(s):  
Equivalent Circuit ◽  
Chemical Potential ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Equivalent Model ◽  
Future Research ◽  
Resonant Circuit ◽  
Substrate Thickness ◽  
Full Wave ◽  
Bowtie Antenna

The resonance performance analysis of graphene antennas is a challenging problem for full-wave electromagnetic simulators due to the trade-off between the computer resource and the accuracy of results. In this paper, an equivalent circuit model is presented to provide a concise and fast way to analyze the graphene-based THz bowtie antenna. Based on the simulated results of the frequency responses of the antenna, a suitable equivalent circuit of Resistor-Inductor-Capacitor (RLC) series is proposed to describe the antenna. Then the RLC parameters are extracted by considering the graphene bowtie antenna as a one-port resonator. Parametric analyses, including chemical potential, arm length, relaxation time, and substrate thickness, are presented based on the proposed equivalent circuit model. Antenna input resistance R is a significant parameter in this model. Validation is performed by comparing the calculated R values with the ones from full-wave simulation. By applying different parameters to the graphene bowtie antenna, a set of R, L, and C values are obtained and analyzed comprehensively. A very good agreement is observed between the equivalent model and the numerical simulation. This work sheds light on the graphene-based bowtie antenna’s initial design and paves the way for future research and applications.

Solid Modeling and Optimization Design of Crank Rocking Flying Shear

2014 ◽  
Vol 608-609 ◽  
pp. 7-13
Author(s):  
Tao Chen ◽  
Ya Ping Hu ◽  
Jing Peng Zhu
Keyword(s):  
Kinetic Analysis ◽  
Optimization Design ◽  
High Efficiency ◽  
Three Dimensional ◽  
Spare Parts ◽  
Working Process ◽  
Analysis And Design ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
Solid Works

Flying shear is the equipment that steel enterprises make shearing process on metal preform body for further processing. Crank flying shear has the advantages of high efficiency and good shearing quality, which makes it widely applied. The paper analyzes and studies crank rocking flying shear evolved from IHI rocking shear. And the paper makes kinetic analysis on crank rocking flying shear, applies Solid works software to make three-dimensional modeling, assembly and animation of working process on crank rocking flying shear, and makes optimized analysis and design on spare parts of flying shear combined with kinetic analysis results.

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