International Journal of Numerical Modelling-Electronic Networks Devices and Fields最新文献

{"title":"Investigation of recessed-source/drain SOI feedback FET-based integrate and fire neuron circuit with compact model of threshold switching devices","authors":"Sasi Kiran Suddarsi,&nbsp;K. J. Dhanaraj,&nbsp;Gopi Krishna Saramekala","doi":"10.1002/jnm.3295","DOIUrl":"https://doi.org/10.1002/jnm.3295","url":null,"abstract":"<p>In this article, the investigation of recessed-source/drain (Re-S/D) SOI feedback FET (FBFET)-based integrate and fire (IF) neuron circuit parameters is presented using a threshold switching device compact model. FBFETs offer high <i>I</i>_ON and low SS with minimal power consumption, operating efficiently at lower voltages and currents than conventional MOSFETs. Utilizing <i>I</i>_ON/<i>I</i>_OFF ratio and threshold voltage limits (<i>V</i>_<i>t</i>2<i>/V</i>_<i>t</i>1) of the device, a model is developed to mimic hysteresis characteristics, which is then used to implement an IF neuron circuit. Our findings show that altering the Re-S/D thickness between 0 and 50 nm enhances the <i>I</i>_ON of the device under study while decreasing hysteresis width. We detected a significant increase in output spike frequency of 46.8% and 65.14% for input current pulse amplitudes of 5 and 20 nA, respectively. Furthermore, increasing the Re-S/D thickness from 0 to 50 nm led to a significant 29.97% enhancement in spike amplitude. In addition, when using input current pulse amplitudes of 5 and 20 nA, we saw energy savings per spike of 3.36% and 12.7%, respectively. At the same time, there was an increase in power of 8.69% and 9.54%. These enhancements in performance metrics establish our proposed integrate and fire neuron circuit as a promising candidate for efficient neuromorphic system implementation.</p>","PeriodicalId":50300,"journal":{"name":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","volume":"37 5","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142404774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oppositional arithmetic optimization algorithm for network reconfiguration and simultaneous placement of DG and capacitor in radial distribution networks","authors":"Indrajit Dey,&nbsp;Provas Kumar Roy","doi":"10.1002/jnm.3298","DOIUrl":"https://doi.org/10.1002/jnm.3298","url":null,"abstract":"<p>The prime objective of this study is the simultaneous network reconfiguration with distributed generation (DG) and capacitor placement in radial distribution networks (RDN) to get the techno and economic benefits for two separate objectives, which are the minimization of actual power loss and annual economic loss as well as a multi objective combining these two single objectives using an oppositional arithmetic optimization algorithm (OAOA). It is an improved version of the currently suggested arithmetic optimization algorithm (AOA) used in the field of engineering for the optimization task. Though the recently developed AOA shows its efficacy in different optimization tasks but to improve the quality of solutions, convergence behavior, and to avoid the local optima, oppositional behavior is added to AOA. The efficacy and exactness of OAOA are tested on three test systems (33-bus, 69-bus, and 118-bus). For the reduction of power loss and annual economic loss as well as the multi objective optimization, two scenarios with different cases are executed using OAOA in RDNs. In scenario 1, the installation of the capacitor (case 1), the installation of unity power factor (UPF) based DG (case 2), and the placement of optimal power factor (OPF) based DG (case 3) have been executed. In scenario 2, allocation of UPF based DG and capacitors simultaneously (case 1), placement of OPF based DG and capacitors simultaneously (case 2) and simultaneous reconfiguration with installation of OPF based DG and capacitor (case 3) has been executed. This recommended OAOA algorithm provides the percentage improvement in real power loss and yearly economic loss for all cases of 33-bus, and 69-bus systems (34.28%, 65.50%, 94.43%, 93.26%, 94.89%, and 95.11%), (28.54%, 56.69%, 83.42%, 79.62%, 83.65%, and 83.71%), and (35.51%, 69.16%, 98.10%, 97.52%, 98.22%, and 98.25%), (30.26%, 61.68%, 88.75%, 85.42%, 88.81%, and 88.98%), respectively. The results and comparative study reveal that the OAOA is better than several optimization algorithms in terms of solution quality and good results. This algorithm has a good speed of response and convergence behavior.</p>","PeriodicalId":50300,"journal":{"name":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","volume":"37 5","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142404775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Applying multiple-channel GNR on 4H-SiC semiconducting material intensifying hydrogen gas sensor performance","authors":"Mohammad K. Anvarifard,&nbsp;Zeinab Ramezani,&nbsp;S. Amir Ghoreishi","doi":"10.1002/jnm.3297","DOIUrl":"https://doi.org/10.1002/jnm.3297","url":null,"abstract":"<p>The graphene nanoribbon field effect transistor abbreviated GNR-FET is seriously emphasized for the hydrogen gas detection owing to attractive properties induced by the graphene material. For the first time, a multiple-channel GNR deposited on 4H-SiC semiconducting material is offered to detect the hydrogen gas. The hydrogen gas by different pressures is released to the multiple-channel GNR to figure out the sensing power of the proposed sensor. The Pd metal is used as catalytic electrode trapping the hydrogen gas by making dipoles on the gate oxide/electrode interface. A Technology computer-aided design based model from the non-equilibrium green function (NEGF) method coupled with the Poisson–Schrodinger equation is used to simulate the electrical manner of the proposed gas sensor by workfunction modulation induced by these dipoles. The channel conduction during sensing hydrogen gas is much enhanced owing to the multiple-channel GNR configuration. Three sensitivity definitions based on threshold voltage, ON current, and OFF current are presented and applied as benchmarks to evaluate the sensing power of the gas sensor. The results have shown the domination of the multiple-channel GNR as compared to the single GNR sensor.</p>","PeriodicalId":50300,"journal":{"name":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","volume":"37 5","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study and optimising performance of enhancement-mode monolithically integrated white-light HEMT-LED by inserting of InGaN quantum wells","authors":"Hindol Bhattacharjee,&nbsp;Anup Dey,&nbsp;Preetisudha Meher","doi":"10.1002/jnm.3289","DOIUrl":"https://doi.org/10.1002/jnm.3289","url":null,"abstract":"<p>In this paper five enhancement-mode monolithically integrated white-light High electron mobility transistors-light emitting diodes (HEMT-LED) structures are proposed and simulated to obtain maximum light intensity, drain current I_d and maximum trans-conductance <i>g</i>_m. In first four HEMT-LED structures white light is generated by combining inbuilt yellow and blue lights and in fifth proposed structure the white light is generated with the combination of inbuilt red, green and blue lights. The InGaN quantum wells (QWs) are inserted in to e-mode ITO/p-GaN gate HEMT structures and the desired wavelength of light spectrums are generated by changing the in content (mole fraction), to obtain inbuilt white light. Among five proposed structures one shows Maximum <i>I</i>_d-max of 925 mA and maximum <i>g</i>_m of 250 mS, which is significantly higher than any HEMT-LED structures reported before. All the proposed structures are simulated in Silvaco TCAD software.</p>","PeriodicalId":50300,"journal":{"name":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","volume":"37 5","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142244869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and performance analysis of compact quad-band two-port sickle-shaped MIMO antenna for wireless applications","authors":"Ashok Yadav,&nbsp;Pramod Singh,&nbsp;Vikram Bali,&nbsp;Akhilesh Kumar,&nbsp;Prabina Pattanayak,&nbsp;Ramesh Kumar Verma","doi":"10.1002/jnm.3293","DOIUrl":"https://doi.org/10.1002/jnm.3293","url":null,"abstract":"<p>In this research, a quad-band sickle-shaped MIMO antenna of compact size 32 × 32 mm² (0.28λ₀ × 0.28λ₀ at lower resonant frequency 2.6 GHz) has been proposed using partial ground and tilted isolation stub at an angle of 45°. It covers 2.40 to 2.80 GHz frequency range with bandwidth (BW) of 15.38% (0.40 GHz) which is applicable for Wi-Fi application in first band and in second band it covers from 4.48 to 5.75 GHz frequency range with BW of 24.83% (1.27 GHz) for WLAN application. In addition, the third band starts from 9.75 to 10.43 GHz frequency range with BW of 6.74% (0.68 GHz) for the X-band whereas in fourth band it covers from 13.07 to 15.87 GHz frequency range with BW of 19.38% (2.8 GHz) frequency, which is applicable on Ku-band application. Moreover, the isolation is &lt; −15 dB in the entire resonating frequency band which is an acceptable limit for reduction of mutual coupling. ECC value is &lt;0.5 in the entire operating band of frequency. The diversity gain of the proposed MIMO antenna is approximately 9.96 dB that shows the antenna exhibits good diversity property. The channel capacity loss value is &lt;0.4 bps/s/Hz in the entire resonating band. In view of all the diversity parameters, the proposed MIMO structure fulfills all the requirements of the MIMO antenna.</p>","PeriodicalId":50300,"journal":{"name":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","volume":"37 5","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142244870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Compact and low-loss IPD bandpass filter using 3D glass-based redistribution layer technology","authors":"HangXing Li,&nbsp;Yazi Cao,&nbsp;Peng Zhao,&nbsp;Gaofeng Wang","doi":"10.1002/jnm.3292","DOIUrl":"https://doi.org/10.1002/jnm.3292","url":null,"abstract":"<p>A low-loss miniaturized bandpass filter is presented using 3D glass-based RDL packaging technology. A new topology consisting of one modified Pi-section and one modified T-section is introduced to generate three transmission zeros which can achieve the high out-of-band rejection. A combination of 2D planar inductors and high-Q 3D inductors is used to achieve low insertion loss and minimize the filter size. In addition, one grounded resonator at input terminal is introduced to generate an extra transmission zero in the low end. The proposed bandpass filter covering 3.3–4.2 GHz is fabricated with a compact size of 1.6 mm × 0.8 mm × 0.25 mm. It exhibits an insertion loss of less than 1.0 dB at a center frequency of 3.75GHz and a return loss of better than 14 dB. The proposed design has a 3 dB fractional bandwidth of 37.6%. Its out-of-band rejection is better than 20 dB at the low frequency band from DC to 2.0 GHz and better than 19 dB at the high frequency band from 5.0 to 9.0 GHz. The simulated and measured results of the proposed BPF are in reasonably good agreement.</p>","PeriodicalId":50300,"journal":{"name":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","volume":"37 5","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142244871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new modified Bessel-type radial basis function for meshless methods: Utilized in the analysis of free vibration in 2D functionally graded Euler–Bernoulli beams","authors":"Shahram Hosseini,&nbsp;Fatemeh Abbaspour,&nbsp;Romina Nazari","doi":"10.1002/jnm.3287","DOIUrl":"https://doi.org/10.1002/jnm.3287","url":null,"abstract":"<p>Radial basis functions (RBFs) are extensively employed in mesh-free methods owing to their distinct properties. This study presents a novel RBF formulation based on a modified first-kind Bessel function, introduced for the first time. The efficacy and precision of the proposed function are assessed through an examination of the free vibrations of Euler–Bernoulli beams composed of two-directional functionally graded materials. Longitudinal and thickness property variations are modeled in polynomial and exponential forms, respectively. The performance of the novel RBF is scrutinized under various boundary conditions (clamped, simply supported, and free), and comparative analyses are conducted against similar investigations and an RBF based on the first-kind Bessel function. Convergence analysis of the proposed modified first-kind Bessel function-based RBF reveals superior convergence rates compared to the first-kind Bessel function-based RBF. Moreover, a comparison between results obtained from modeling using the proposed RBF and exact solutions underscores the adequacy of this approach, with a maximum discrepancy of 4.933% observed under clamped-free boundary conditions. In essence, the findings suggest that the proposed modified first-kind Bessel function-based RBF holds promise for analyzing the free vibrations of functionally graded Euler–Bernoulli beams. The primary aim of this research is to introduce and validate a new RBF based on a modified first-kind Bessel function for the analysis of free vibrations in Euler–Bernoulli beams made of two-directional functionally graded materials. The study focuses on evaluating the performance and accuracy of this novel RBF in comparison with existing RBFs and exact solutions. By addressing the limitations of conventional RBFs and proposing an innovative approach, this research aims to enhance the accuracy and efficiency of meshless methods in structural vibration analysis.</p>","PeriodicalId":50300,"journal":{"name":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","volume":"37 5","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electromagnetic forces and their finite element computation","authors":"François Henrotte,&nbsp;Christophe Geuzaine","doi":"10.1002/jnm.3290","DOIUrl":"https://doi.org/10.1002/jnm.3290","url":null,"abstract":"<p>This paper introduces the concepts of differential geometry that are necessary to establish a systematic definition for electromagnetic forces by means of a natural thermodynamic approach. It is shown that standard electromagnetic force formulae used in finite element computational electromagnetism are particular instances of that general approach. Finally, the paper offers a complete conceptual framework, as well as a mathematical toolbox, to derive electromagnetic force formulae for multi-physics finite element models with complex materials.</p>","PeriodicalId":50300,"journal":{"name":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","volume":"37 5","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142169857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A millimeter-wave ultra-wideband triplexer with high isolation and high power","authors":"Dong Li,&nbsp;Zhouyang Wei,&nbsp;Maoyan Wang,&nbsp;Zhenyu Hong,&nbsp;Boqi Wei,&nbsp;Juntao Lin,&nbsp;Lijie Sun,&nbsp;Jun Xu,&nbsp;Xiaochuan Zhang","doi":"10.1002/jnm.3288","DOIUrl":"https://doi.org/10.1002/jnm.3288","url":null,"abstract":"<p>This paper provides a compact, noncontiguous, high isolation, manifold triplexer operating from 25.8 to 49.5 GHz, a 62.95% wide fractional operating bandwidth. The triplexer is composed of three waveguide bandpass filters with Chebyshev responses. The initialization and loop optimization strategy of the triplexer are given. To eliminate undesired high-order mode transmission between common port and filters, ridged-waveguide topology, tuning screws, capacitive windows, and narrowing the wide edges of resonant cavities for the third filter are employed. The measured results and simulated ones are in good agreement. To our knowledge, this is the most broadband, high-power triplexer demonstrated to date.</p>","PeriodicalId":50300,"journal":{"name":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","volume":"37 5","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142137712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Galerkin boundary element method for simulating lightning response of grounding grid in horizontal multilayered soil model considering soil ionization effect","authors":"Zhong-Xin Li,&nbsp;Peng Li,&nbsp;Xia Zhao","doi":"10.1002/jnm.3285","DOIUrl":"https://doi.org/10.1002/jnm.3285","url":null,"abstract":"<p>This work proposes a novel mathematical model based on the Galerkin time-domain boundary element method for accurately calculating the lightning current distribution and lightning impulse response of the buried substation grounding grid, in a multi-layer horizontal layered soil model, by taking into account the soil ionization effect. To improve computational efficiency, the quasi-static complex image method and its closed form time-domain Green's function have been introduced into the model that has the ability to analytically calculate the mutual inductance coefficient between the branch currents of any two conductor segments and the mutual resistance coefficient between the leakage currents. The Galerkin time-domain boundary element method proposed in this work can simulate the transient lightning impulse response of a substation grounding grid buried in the multi-layer horizontal layered soil.</p>","PeriodicalId":50300,"journal":{"name":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","volume":"37 5","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142130408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}