Zobrazeno 1 - 10
of 5 952
pro vyhledávání: '"Ultra-wideband (UWB)"'
Publikováno v:
Geo-spatial Information Science, Vol 27, Iss 4, Pp 1162-1181 (2024)
The Ultra-Wideband (UWB) Location-Based Service is receiving more and more attention due to its high ranging accuracy and good time resolution. However, the None-Line-of-Sight (NLOS) propagation may reduce the ranging accuracy for UWB localization sy
Externí odkaz:
https://doaj.org/article/2821680df965468cb144f2c045406a47
Publikováno v:
Telecom, Vol 5, Iss 2, Pp 312-332 (2024)
In this study, at ultra-wideband (UWB) frequency band (3.1–10.6 GHz), we propose the use of compact 2:1 and 3:1 nonuniform transmission line Wilkinson power dividers (NTL WPDs) as feeding networks for simple 2 × 1 linear UWB Vivaldi tapered and no
Externí odkaz:
https://doaj.org/article/c6e0611c9dbe4e6d84a96e4aa7fe75dd
Autor:
Ammar Fahem Majeed, Rashidah Arsat, Muhammad Ariff Baharudin, Nurul Mu'Azzah Abdul Latiff, Abbas Albaidhani
Publikováno v:
IEEE Access, Vol 12, Pp 179431-179448 (2024)
The accurate distinction between line-of-sight (LOS) and non-line-of-sight (NLOS) propagation channels is paramount for precise distance measurement within ultra-wideband (UWB) indoor localization systems. In complex and dynamic environments, such as
Externí odkaz:
https://doaj.org/article/5fffb83ff3d44c47a54ebb170d0aece1
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 6, Pp 1671-1680 (2024)
This paper introduces a low distortion radiation pattern ultra-wideband (UWB) transverse electromagnetic (TEM) horn antenna designed to operate in the 2 to 18 GHz frequency range. The modification is achieved using a non-uniform antenna feed without
Externí odkaz:
https://doaj.org/article/f84548b64cf441f98a2732a1c9cdcbec
Autor:
Jawad Yousaf, Satanai Yakoub, Sara Karkanawi, Taimur Hassan, Eqab Almajali, Huma Zia, Mohammed Ghazal
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 6, Pp 1815-1837 (2024)
Ultra-wideband radar technology (UWB) has demonstrated its vital role through various applications in surveillance, search and rescue, health monitoring, and the military. Unlike conventional radars, UWB radars use high-frequency, wide-bandwidth puls
Externí odkaz:
https://doaj.org/article/14da169c482a4d67bbf448bbc5265a9d
Publikováno v:
IEEE Access, Vol 12, Pp 129103-129119 (2024)
Detecting falls in elderly individuals is crucial for their safety and well-being, especially in high-risk areas such as bathrooms. To enhance human activity recognition (HAR) while ensuring user privacy, we developed an advanced fall detection syste
Externí odkaz:
https://doaj.org/article/9f534a2bc20545c58b35c959ff7c2875
Autor:
Eric D. Robinson, Carey M. Rappaport
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 5, Pp 1340-1350 (2024)
Unbalanced-fed Tightly-Coupled Dipole Arrays (TCDAs) allow for the realization of ultrawideband, wide-scanning phased arrays without the need for baluns, which may increase size, weight, and cost. However, unbalanced-fed TCDAs often have additional r
Externí odkaz:
https://doaj.org/article/1cb4a3b870d348c999a4f9c39dc22965
Autor:
Bisma Arif, Muhammad Bilal, Asim Quddus, Rashid Saleem, Khmaies Ouahada, Ateeq Ur Rehman, Muhammad Farhan Shafique, Habib Hamam
Publikováno v:
IEEE Access, Vol 12, Pp 73247-73257 (2024)
In this manuscript, gain improvement is observed for an ultra-wideband (UWB) antenna. The proposed arrangement is optimally designed for high gain wideband communications. This arrangement comprises a low profile and easily circuit integrated antenna
Externí odkaz:
https://doaj.org/article/22eec09c5c3d41248bdd047b9c79fde4
Publikováno v:
IEEE Access, Vol 12, Pp 61252-61264 (2024)
As an increasing number of people suffer from sleep disorders, such as insomnia or sleep apnea, sleep monitoring and management using consumer devices have gained increasing attention from research communities. As sleep quality is closely related to
Externí odkaz:
https://doaj.org/article/67540032f9a74b96a64b8d9f913fea8c
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 2, Pp 241-255 (2024)
Wireless capsule endoscopy (WCE) systems are used to capture images of the human digestive tract for medical applications, especially the noninvasive diagnostics and treatments of small intestinal diseases. As an important part of the WCE system, the
Externí odkaz:
https://doaj.org/article/da38b4ab3ece4626ba22b923088c4f67