Zobrazeno 1 - 10
of 19 465
pro vyhledávání: '"WIDE-BAND"'
Autor:
WANG Shuo, YAN Qun, YAN Hao, SUN Yongtao, WANG Anshuai, ZHANG Zhaozhan, DING Qian, WANG Liang
Publikováno v:
Hangkong gongcheng jinzhan, Vol 15, Iss 5, Pp 179-190 (2024)
The suppression of vibration and noise has always been an important issue in engineering，and metamaterials have shown significant application value in vibration and noise reduction. In this paper，a novel hollow starshaped chiral metamaterial is d
Externí odkaz:
https://doaj.org/article/5e80e02c30af4d34a3e510eb2dbdac2a
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)
Abstract Accurate indoor positioning is the key to the development of the Internet of Things and intelligent devices. In view of GPS-denied indoor environments, we propose to build the indoor local positioning system by using ultra-wide band (UWB) sy
Externí odkaz:
https://doaj.org/article/d62a2fe5d5fd4eae998b454a0e1080f3
Autor:
Duy Binh Pham, Shyh-Chour Huang
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract Low-frequency vibration and noise control present enduring engineering challenges that garner extensive research attention. Despite numerous active and passive control solutions, achieving multiple ultra-wide attenuation regions remains elus
Externí odkaz:
https://doaj.org/article/6ecbdc46b94849e8b4f6b96c068abccf
An RC snubber design method to achieve optimized switching noise‐loss trade‐off of cascode GaN HEMTs
Publikováno v:
IET Power Electronics, Vol 17, Iss 12, Pp 1583-1593 (2024)
Abstract The cascode gallium nitride high electron mobility transistors (GaN HEMTs) are very vulnerable to self‐sustained turn‐off oscillation due to their cascode configuration. This paper presents a design approach for the RC snubber of cascode
Externí odkaz:
https://doaj.org/article/dbc93eee0c7645958d34147aca7d049a
Autor:
Sadasivam S, Thulasi Bai
Publikováno v:
Alexandria Engineering Journal, Vol 103, Iss , Pp 376-383 (2024)
A compact ultra-wide band antenna for breast cancer detection in bio-medical applications is presented in this study. The proposed antenna is printed on 1.6 mm thick FR4 substrate with a dielectric constant of 4.6 and tangential loss of 0.02. The uni
Externí odkaz:
https://doaj.org/article/c791530b92644c989f5e378b65522671
Autor:
Istiaq Mohammad Tanvirul Islam, Sikder Sunbeam Islam, Md. Rashedul Islam, Abu Naser Md. Rezaul Karim, Rezaul Azim
Publikováno v:
Journal of Engineering and Applied Science, Vol 71, Iss 1, Pp 1-16 (2024)
Abstract Metamaterial absorbers have sparked widespread interest due to their remarkable electromagnetic properties, which enable a wide range of applications in light absorption and manipulation. This study introduces a new three-layer nanomaterial
Externí odkaz:
https://doaj.org/article/b871401a63754741b0c7b18cf7bd5bac
Autor:
Lukas Bergmann, Mark‐M. Bakran
Publikováno v:
IET Power Electronics, Vol 17, Iss 7, Pp 789-801 (2024)
Abstract This article presents the design and experimental validation of a novel semiconductor area optimised 3300 V half bridge with Silicon Carbide (SiC) MOSFETs for HVDC converters. Based on a loss simulation, the problem statement is provided. On
Externí odkaz:
https://doaj.org/article/2a9b6b5f889e44109c2c4353b62e6c05
Publikováno v:
IET Power Electronics, Vol 17, Iss 7, Pp 878-889 (2024)
Abstract Silicon Carbide (SiC) Gate Turn‐off (GTO) thyristor is regarded as a promising option for pulsed power applications; however, the formation of high di/dt has been constrained by the slow current rise transient phase and the turn‐on curre
Externí odkaz:
https://doaj.org/article/a053026151ac4f13a69146130df9c27f
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Mohammad Jakir Hossain, Md Alim Uddin, Md Habibur Rahman, Md Kamruzzaman, Mohammad Rashed Iqbal Faruque, K.S. Al-mugren
Publikováno v:
Results in Engineering, Vol 23, Iss , Pp 102465- (2024)
This paper focuses on designing and investigating a new type of metamaterial called an ultra-thin wide-band mu-negative (MNG) metamaterial. The targeted frequency range is 0.1–10 THz. At the resonance frequency of 6.37 THz, the permeability (μ) of
Externí odkaz:
https://doaj.org/article/720249596f2145d1872c9db9a949e255