Zobrazeno 1 - 10
of 4 500
pro vyhledávání: '"ultra 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
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
Publikováno v:
IEEE Access, Vol 12, Pp 89818-89835 (2024)
Ultra-wide Band (UWB) technology has emerged as a pivotal tool for human motion detection, finding applications in diverse areas ranging from smart homes to automotive safety. This paper presents a comprehensive survey of methodologies employed in UW
Externí odkaz:
https://doaj.org/article/e8dba1e13e7f4b1488798cf88d88e341
Publikováno v:
Remote Sensing, Vol 16, Iss 22, p 4171 (2024)
Continuous accurate positioning in global navigation satellite system (GNSS)-denied environments is essential for robot navigation. Significant advances have been made with light detection and ranging (LiDAR)-inertial measurement unit (IMU) technique
Externí odkaz:
https://doaj.org/article/5e417f91bb5d46f7b11a0843db41cd64
Autor:
Killol Pandya, Trushit Upadhyaya, Upesh Patel, Vishal Sorathiya, Aneri Pandya, Ahmed Jamal Abdullah Al-Gburi, Mohd Muzafar Ismail
Publikováno v:
Results in Engineering, Vol 22, Iss , Pp 102318- (2024)
A quad-port Multiple Input Multiple Output Antenna with high isolation is presented in this paper. The MIMO design is intended to receive Ultra-Wide Band response to target various wireless applications. The engineered model has 40 x 40 × 1.6 mm3 el
Externí odkaz:
https://doaj.org/article/23cff5cb204046699db48c67329dfd91
Autor:
Jiawang Yong, Yiyao Dong, Yue Bao, Wanting Li, Sue Ren, Weiping Sun, Zhishuai Wan, Ming Liu, Daining Fang
Publikováno v:
Materials & Design, Vol 241, Iss , Pp 112945- (2024)
This study presents a novel star-shaped honeycomb meta-material (N-SSHM) that realizes improved static mechanical and vibration properties by introducing rings to the four sides of a traditional star-shaped honeycomb meta-material (T-SSHM). Optimizat
Externí odkaz:
https://doaj.org/article/18877ffdb9f2435bbe3bf79874437d08
Autor:
ZHANG Ziliang
Publikováno v:
Meikuang Anquan, Vol 54, Iss 8, Pp 228-233 (2023)
In view of the problems such as inaccurate real-time positioning, misreading, lost track and inability to count the number of passengers in the compartment at present, which are affected by faster vehicle speed and metal shielding in the compartment,
Externí odkaz:
https://doaj.org/article/811b5ea921394d39ab479a295e9b5db9
Autor:
Uğur Yalçın, Yağmur Barış
Publikováno v:
Uludağ University Journal of The Faculty of Engineering, Vol 28, Iss 2, Pp 597-612 (2023)
Belirlenen frekans aralığında yüzeye gelen elektromanyetik dalgaların iletim, yansıma veya soğurma özelliği göstermesini sağlayan periyodik yapılara frekans seçici yüzeyler (FSY) denir. Çalışmada üç farklı geometrik şekle sahip F
Externí odkaz:
https://doaj.org/article/7077552c8e7d486a9b5396d81edb38bc