نتایج جستجو برای: notched positive

تعداد نتایج: 660190  

2013
Guo-Cheng Wu Guang-Ming Wang Ya-Wei Wang Christophe Caloz

In this article, a novel simplified dual-composite right/lefthanded transmission line (S-D-CRLH-TL) is proposed according to the theory of dual-composite right/left-handed transmission line. The electromagnetic characteristics of S-D-CRLH-TL are analyzed by simulator, and the results indicate that the proposed structure has two narrow stopbands; they can be controlled by changing the geometry p...

Journal: :American Journal of Roentgenology 1969

Journal: :international journal of iron & steel society of iran 2008
a. r. ebrahimi a. abyazi s. m. abbasi

thermomechanical control process steel produced by rolling has a significant anisotropy. the elongated grains and inclusions formed during hot rolling of ferrite and low carbon hsla steels directly influence the anisotropy of the steel’s mechanical properties as a result of microstructural anisotropy. the present research deals with this anisotropy, and particular attention has been paid to the...

Journal: :International Journal of Fatigue 2021

A specific design approach is formulated to notched components of additively manufactured AISI 316L against constant/variable amplitude multiaxial fatigue loading. The accuracy the proposed checked experimental results generated by testing, under biaxial loading, plain/notched cylindrical specimens 3D-printed 316L. Specific trials were run investigate also effect out-of-phase angles equal 90° a...

2017
Shubin Yan Meng Zhang Xuefeng Zhao Yanjun Zhang Jicheng Wang Wen Jin

In this study, a new refractive index sensor based on a metal-insulator-metal waveguide coupled with a notched ring resonator and stub is designed. The finite element method is used to study the propagation characteristics of the sensor. According to the calculation results, the transmission spectrum exhibits a typical Fano resonance shape. The phenomenon of Fano resonance is caused by the coup...

2014
Rezaul Azim Mohammad Tariqul Islam Norbahiah Misran Baharudin Yatim Haslina Arshad

A small antenna with single notch band at 3.5 GHz is designed for ultrawideband (UWB) communication applications. The fabricated antenna comprises a radiating monopole element and a perfectly conducting ground plane with a wide slot. To achieve a notch band at 3.5 GHz, a parasitic element has been inserted in the same plane of the substrate along with the radiating patch. Experimental results s...

2015
Wenwen Wang Zhiliang Zhang Xuechong Ren Yongjun Guan Yanjing Su

Finite element analyses were conducted to clarify the role of corrosion product films (CPFs) in stress corrosion cracking (SCC). Flat and U-shaped edge-notched specimens were investigated in terms of the CPF-induced stress in the metallic substrate and the stress in the CPF. For a U-shaped edge-notched specimen, the stress field in front of the notch tip is affected by the Young's modulus of th...

2017
Wael ALI Ahmed A. IBRAHIM Jan MACHAC

This paper presents triple band notched ultra wide band (UWB) monopole antenna with overall size of 36 × 32 mm fed by microstrip transmission line. In order to achieve a good impedance matching from 2.7 GHz to 13.4 GHz, a tapered transition between the rectangular patch and the feeding line is utilized. The three notched frequency bands are accomplished by a defected microstrip structure (DMS) ...

2013
Rezaul AZIM Mohammad Tariqul ISLAM Ahmed Toaha MOBASHSHER

A compact rectangular printed antenna with dual band-notches is proposed for ultra-wideband (UWB) applications. The dual band-notch characteristics have been realized by etching one C-shaped parasitic element and rectangular split ring resonator above the ground plane. The proposed antenna can achieves a wide bandwidth from 2.9-11 GHz with the dual notched bands centred at 5.25 GHz and 5.8 GHz....

2015
Ahmed Boutejdar Ahmed A. Ibrahim Edmund Burte

UWB antenna with dual notched characteristics fed by microstrip transmission line is presented in this paper. The tapered connection between the rectangular patch and the feed line is used to produce a good impedance matching from 2.3 to 11.5 GHz. A dual band frequency notches are achieved using UDGS loaded with lumped capacitors. The first notch frequency band is achieved using DGS to reduce t...

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