Results 61 to 70 of about 65,492 (218)

Wideband and UWB antennas for wireless applications. A comprehensive review [PDF]

, 2017
A comprehensive review concerning the geometry, the manufacturing technologies, the materials, and the numerical techniques, adopted for the analysis and design of wideband and ultrawideband (UWB) antennas for wireless applications, is presented. Planar,
Cicchetti, Renato, Miozzi, Emanuela, Testa, Orlandino   +2 more
core   +3 more sources

Subterranean Mine Inspection Using the Prometheus Re‐Configurable Drone

Journal of Field Robotics, Volume 43, Issue 3, Page 1646-1660, May 2026.
ABSTRACT This paper describes the design, development, and real‐world testing of an autonomous drone for subterranean exploration, known as “Prometheus.” Driven by requirements from industry that the drone be able to be deployed through areas of restricted access, Prometheus was designed to be directly deployed through a 150 mm aperture.
Liam Brown, Robert Clarke, Ali Akbari, Ferdian Jovan, Jameel Marafie, Ognjen Marjanovic, Sara Bernardini, Tom Richardson, Simon Watson   +8 more
wiley   +1 more source

Fast design optimization of UWB antenna with WLAN Band-Notch [PDF]

, 2015
In this paper, a methodology for rapid design optimization of an ultra-wideband ( UWB) monopole antenna with a lower WLAN band-notch is presented. The band-notch is realized using an open loop resonator implemented in the radiation patch of the antenna ...
Bekasiewicz, A, Dhaene, Tom, Koziel, S, Ulaganathan, Selvakumar   +3 more
core   +2 more sources

Airborne Radar Reveals Area‐Wide Decadal Increase of Surface Mass Balance on the Plateau in Dronning Maud Land, East Antarctica

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Projections of Antarctica's sea‐level contribution depend on future changes in surface mass balance (SMB), yet it remains uncertain whether climate change has already impacted SMB on the East Antarctic Plateau, given diverging trends in prior studies.
Alexandra M. Zuhr, Steven Franke, Olaf Eisen, Daniel Steinhage, Veit Helm, Maria Hörhold, Johannes Freitag, Reinhard Drews   +7 more
wiley   +1 more source

Implementation and Investigation of a Compact Circular Wide Slot UWB Antenna with Dual Notched Band Characteristics using Stepped Impedance Resonators [PDF]

, 2012
A coplanar waveguide (CPW) fed ultra-wideband (UWB) antenna with dual notched band characteristics is presented in this paper. The circular wide slot and circular radiation patch are utilized to broaden the impedance bandwidth of the UWB antenna.
Tao Jiang, Wenxing Li, Yingsong Li
core   +1 more source

Joint Ultra-wideband and Signal Strength-based Through-building Tracking for Tactical Operations

, 2013
Accurate device free localization (DFL) based on received signal strength (RSS) measurements requires placement of radio transceivers on all sides of the target area. Accuracy degrades dramatically if sensors do not surround the area.
Bocca, Maurizio, McCracken, Merrick, Patwari, Neal   +2 more
core   +1 more source

Multitasking Smart Intestinal Capsule Robot: A Cutting‐Edge Platform for Sampling, Diagnosis, and Therapy

Advanced Robotics Research, Volume 2, Issue 2, April 2026.
Gut microbiota and biomarkers are linked to diseases like neurological disorders and metabolic syndromes. Ingestible capsule robots enable minimally invasive gut health assessment. This article proposes a promising direction for the advancement of capsule robots, integrating in situ sampling, real‐time diagnostics, and personalized therapy.
Xizong Chen, Libing Huang, Lei Ren, Miao Wang   +3 more
wiley   +1 more source

Unequal Land and Water Changes Between Nations Driven by International Boundary Rivers: Mapping and Temporal Analysis of Shared Borders Between China and Its Neighbors

Earth's Future, Volume 14, Issue 4, April 2026.
Abstract International Boundary Rivers (IBRs), as natural political frontiers, constitute one‐third of China's land borders. However, a lack of systematic monitoring has led to a limited understanding of the distribution of these politically significant rivers and the potential risks posed by their dynamic nature.
Shengquan Lu, Bin Wu, Wenzhu Zhang, Xiangying Kong, Guanhai Gu, Kai Jiang   +5 more
wiley   +1 more source

YOLOv8-SAB: Terahertz Image Detection Network Based on Shuffle Attention and YOLOv8

IEEE Access
The limited accuracy of detecting small objects with current AI algorithm is becoming prominent under background of security check using low-resolved terahertz images.
Yu Jiang, Yizhang Li, Zhongmin Wang, Feng Qi, Fenggui Wang, Yongsheng Liu, Tao Chen   +6 more
doaj   +1 more source

3D As‐Built Environments in Extended Reality Applications: A Systematic Review

The Photogrammetric Record, Volume 41, Issue 194, April/June 2026.
This systematic review identifies BIM and game engines as the primary tools for integrating 3D as‐built environments into XR. While multi‐sensor fusion and multimodal interaction enhance immersion, persistent challenges like manual modeling and bandwidth limitations continue to hinder full ecosystem maturation.
Jesús Balado, Yu Feng, Zhouyan Qiu, Weixiao Gao, Arttu Julin   +4 more
wiley   +1 more source