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.

scholarly journals Quad-Band Bowtie Antenna Design for Wireless Communication System Using an Accurate Equivalent Circuit Model

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Mohammed Moulay ◽  
Mehadji Abri ◽  
Hadjira Abri Badaoui
Keyword(s):  
Equivalent Circuit ◽  
Communication Systems ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Mobile Wimax ◽  
Frequency Range ◽  
Band Frequency ◽  
Low Profile ◽  
Bowtie Antenna ◽  
Successful Design

A novel configuration of quad-band bowtie antenna suitable for wireless application is proposed based on accurate equivalent circuit model. The simple configuration and low profile nature of the proposed antenna lead to easy multifrequency operation. The proposed antenna is designed to satisfy specific bandwidth specifications for current communication systems including the Bluetooth (frequency range 2.4–2.485 GHz) and bands of the Unlicensed National Information Infrastructure (U-NII) low band (frequency range 5.15–5.35 GHz) and U-NII mid band (frequency range 5.47–5.725 GHz) and used for mobile WiMAX (frequency range 3.3–3.6 GHz). To validate the proposed equivalent circuit model, the simulation results are compared with those obtained by the moments method of Momentum software, the finite integration technique of CST Microwave studio, and the finite element method of HFSS software. An excellent agreement is achieved for all the designed antennas. The analysis of the simulated results confirms the successful design of quad-band bowtie antenna.

Energy and Communication Efficient FSS for Equivalent Model of Hard-Coated Energy Saving Glass

2021 ◽  
Vol 1160 ◽  
pp. 57-64
Author(s):  
Ghaffer Iqbal Kiani ◽  
Jahanzeb Khan
Keyword(s):  
Energy Saving ◽  
Equivalent Circuit ◽  
Oblique Incidence ◽  
Equivalent Circuit Model ◽  
Equivalent Model ◽  
Full Wave ◽  
Lumped Elements ◽  
Microwave Signals ◽  
Band Pass ◽  
Stable Frequency

An energy and communication efficient FSS is presented for equivalent model of ESG with hard coating. An FSS with second order band-pass response has been realized by full wave 3D simulations and results have been imitated using an equivalent circuit model to calculate the value of lumped elements. The design is composed of three cascaded FSSs with two glass layers of 6 mm each in between. Due to this topology the transmission of useful RF/microwave signals has been improved for a wider bandwidth, increased thermal insulation, stable frequency and polarization at oblique incidence and security for WLAN at 2.45 GHz.

Full-wave equivalent circuit model for 2D conductor

2003 ◽  
Vol 39 (19) ◽  
pp. 1367 ◽  
Author(s):  
E.K. Chua ◽  
K.Y. See
Keyword(s):  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Full Wave

Electrical equivalent model of meta-materials based on circular SRR

2015 ◽  
Vol 8 (6) ◽  
pp. 909-913
Author(s):  
Mondher Labidi ◽  
Fethi Choubani
Keyword(s):  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Maximum Error ◽  
Split Ring Resonator ◽  
Equivalent Model ◽  
Split Ring ◽  
Lumped Element ◽  
Full Wave ◽  
Full Wave Analysis ◽  
Good Agreement

This work focuses on the circuit modeling and full-wave analysis behavior of circular split ring resonator (SRR). We investigate an equivalent circuit model that allows calculating the resonant frequency from the geometric parameters. Equivalent LC parameters of inductance and capacitance are derived using conformal mapping and constitutive equations. Lumped element equivalent circuit models of resonator are investigated highlighting the behavior of inductance and capacitance. In order to validate our proposed analytical LC model, a comparison of theoretical and simulation results has been performed and a good agreement is achieved with a maximum error of 4.23% and a minimum error of 0.52%, which supports the validity of the equivalent model.

scholarly journals The parameter identification method study of the splice equivalent circuit model for the aerial lithium-ion battery pack

2018 ◽  
Vol 51 (5-6) ◽  
pp. 125-137 ◽  
Author(s):  
Shunli Wang ◽  
Carlos Fernandez ◽  
Xiaohan Liu ◽  
Jie Su ◽  
Yanxin Xie
Keyword(s):  
Lithium Ion Battery ◽  
Equivalent Circuit ◽  
Experimental Studies ◽  
Equivalent Circuit Model ◽  
Lithium Ion ◽  
Circuit Model ◽  
Operating Conditions ◽  
Battery Pack ◽  
Equivalent Model ◽  
Model Parameters

According to the special condition expression of the aerial lithium-ion battery pack, a novel targeted equivalent model (Splice–Equivalent Circuit Model) is proposed and constructed. The Splice–Equivalent Circuit Model achieves the accurate mathematical expression of the special operating conditions and the working process for the lithium-ion battery pack, which is realized by using the equivalent simulation of different internal effects in the charging and discharging process of the battery pack. The theoretical study and analysis of the working principle is investigated to express the working characteristics of the aerial lithium-ion battery pack together with the experimental analysis. Then, the equivalent circuit model of the aerial lithium-ion battery pack is carried out on the composite construction methods. The experimental studies are carried out in order to identify the parameters of the improved Splice–Equivalent Circuit Model, obtaining respectable identification results of battery equivalent model parameters.

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