Journal ArticleDOI
A neuro-based approach to designing a Wilkinson power divider
Mohammad Jamshidi,Ali Lalbakhsh,Saeedeh Lotfi,Hesam Siahkamari,Bahare Mohamadzade,Jaafar Jalilian +5 more
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This article is published in International Journal of Rf and Microwave Computer-aided Engineering.The article was published on 2020-03-01. It has received 66 citations till now. The article focuses on the topics: Wilkinson power divider.read more
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Journal ArticleDOI
Artificial Intelligence and COVID-19: Deep Learning Approaches for Diagnosis and Treatment
Mohammad Jamshidi,Ali Lalbakhsh,Jakub Talla,Zdenek Peroutka,Farimah Hadjilooei,Pedram Lalbakhsh,Morteza Jamshidi,Luigi La Spada,Mirhamed Mirmozafari,Mojgan Dehghani,Asal Sabet,Saeed Roshani,Sobhan Roshani,Nima Bayat-Makou,Bahare Mohamadzade,Zahra Malek,Alireza Jamshidi,Sarah Kiani,Hamed Hashemi-Dezaki,Wahab Mohyuddin +19 more
TL;DR: A response to combat the virus through Artificial Intelligence (AI) is rendered in which different aspects of information from a continuum of structured and unstructured data sources are put together to form the user-friendly platforms for physicians and researchers.
Journal ArticleDOI
Design of a Compact Planar Transmission Line for Miniaturized Rat-Race Coupler With Harmonics Suppression
Ali Lalbakhsh,Golshan Mohamadpour,Saeed Roshani,Mohammad Ami,Sobhan Roshani,Abu Sadat Md. Sayem,Mohammad Alibakhshikenari,Slawomir Koziel +7 more
Abstract: This paper presents an elegant yet straightforward design procedure for a compact rat-race coupler (RRC) with an extended harmonic suppression. The coupler’s conventional $\lambda $ /4 transmission lines (TLs) are replaced by a specialized TL that offers significant size reduction and harmonic elimination capabilities in the proposed approach. The design procedure is verified through the theoretical, circuit, and electromagnetic (EM) analyses, showing excellent agreement among different analyses and the measured results. The circuit and EM results show that the proposed TL replicates the same frequency behaviour of the conventional one at the design frequency of 1.8 GHz while enables harmonic suppression up to the $7^{\mathrm {th}}$ harmonic and a size reduction of 74%. According to the measured results, the RRC has a fractional bandwidth of 20%, with input insertion losses of around 0.2 dB and isolation level better than 35 dB. Furthermore, the total footprint of the proposed RRC is only 31.7 mm $\times15.9$ mm, corresponding to $0.28\,\,\lambda \times 0.14\,\,\lambda $ , where $\lambda $ is the guided wavelength at 1.8 GHz.
Journal ArticleDOI
Design and Modeling of a Compact Power Divider with Squared Resonators Using Artificial Intelligence
TL;DR: The results show that the proposed model can predict the frequency response of the designed WPD, accurately, and results in a performance improvement of the proposed divider.
Journal ArticleDOI
Size reduction and performance improvement of a microstrip Wilkinson power divider using a hybrid design technique
TL;DR: In this paper, a hybrid technique to reduce the size and improve the performance of a Wilkinson power divider (WPD) is introduced, which includes a typical series LC circuit, a miniaturizing inductor, and two transmission lines, which make an LC branch.
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Wilkinson Power Divider with Band-pass Filtering Response and Harmonics Suppression Using Open and Short Stubs
TL;DR: In this article, a Wilkinson Power Divider (WPD) using open and short stubs is proposed to suppress second, third and fourth harmonics in the initial structure to achieve harmonics suppression.
References
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Human Error in Medicine
TL;DR: I can remember my first "error," which might not be the first mistake that I made as a clinician, but the first I remember where I saw the immediate cause and deadly effect.
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Microstrip Filters for RF/Microwave Applications [Book Review]
Jia-Sheng Wong,M.J. Lancaster +1 more
TL;DR: Sui as mentioned in this paper presented a time domain computer analysis of nonlinear hybrid systems with finite difference time domain (FDTD) electromagnetic simulators and circuit level nonlinear device simulators.
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Multiobjective Particle Swarm Optimization to Design a Time-Delay Equalizer Metasurface for an Electromagnetic Band-Gap Resonator Antenna
TL;DR: In this paper, an efficient particle swarm optimization (PSO) algorithm was developed to design a near-field time-delay equalizer metasurface (TDEM) for the purpose of improving directivity and radiation patterns of classical electromagnetic band-gap resonator antennas.
Journal ArticleDOI
Compact Filtering Power Divider With Enhanced Second-Harmonic Suppression
TL;DR: In this article, a power divider integrated with high-selectivity bandpass resoponses is proposed to realize the dual functions of the power division and filtering, where two transmission zeros are generated near the passband edges and another one is created at the second harmonic frequency which enhances the rejection levels.
Journal ArticleDOI
Single-Dielectric Wideband Partially Reflecting Surface With Variable Reflection Components for Realization of a Compact High-Gain Resonant Cavity Antenna
TL;DR: In this paper, the authors presented a design methodology for a compact low-cost partially reflecting surface (PRS) for a wideband high-gain resonant cavity antenna (RCA) which requires only a single commercial dielectric slab.