Results 51 to 60 of about 18,238 (168)

Wideband Dipole Antenna

open access: yesBulletin of the South Ural State University. Ser. Computer Technologies, Automatic Control & Radioelectronics, 2016
The dipole antenna providing 13% bandwidth with VSWR lower than 1.15 is considered in the paper. The antenna is characterized by its compactness, mechanical durability, low aerodynamic resistance. The antenna can be executed both in tubular, and in microstrip design. © 2013 EurAAP.
VOYTOVICH N.I., ERSHOV A.V.
openaire   +5 more sources

Design of Two Compact Wideband Monopoles Through Loading with Linear Approximated Lumped Components

open access: yesMicromachines
In this paper, two ultra-wideband monopoles in a colinear structure are presented for application in remote terrestrial communication systems. The antennas consist of a loaded monopole with a hat and an elevated loaded monopole located in the upper ...
Jiansen Ma, Weiping Cao, Xinhua Yu
doaj   +1 more source

A Method of Interference Suppression in Integrated OTFS Communication and Sensing Systems

open access: yesIEEE Access
The orthogonal time-frequency space (OTFS) modulation is resistant to double selective fading, making it a promising modulation scheme for next-generation integrated sensing and communication (ISAC) systems.
Zhiling Tang, Long Yu
doaj   +1 more source

A Low-Sidelobe Fully Metallic Ridge Gap Waveguide Antenna Array for W-Band Applications

open access: yesSensors
To address the critical demand for high-gain, low-sidelobe, and high-efficiency antennas in W-band arrays, this work presents a low-sidelobe all-metal array antenna based on ridge gap waveguide technology.
Huixia Jiang   +6 more
doaj   +1 more source

Ultra-Wideband Antennas

open access: yes, 2015
The focus of UWB antenna research activity has matured in recent years and currently mainly concentrates on applications such as biomedicine and security. Early UWB antenna designs were driven by the FCC allocation of spectrum in 2002 and focussed on obtaining wide impedance bandwidths with reasonable group delay characteristics.
Ammann, Max   +2 more
openaire   +3 more sources

A Mathematical Model for Wideband Ranging

open access: yesIEEE Journal of Selected Topics in Signal Processing, 2015
Wideband ranging is essential for numerous emerging applications that rely on accurate location awareness. The quality of range information, which depends on network intrinsic properties and signal processing techniques, affects the localization accuracy.
Stefania Bartoletti   +3 more
openaire   +2 more sources

Wideband Patch Antenna Using Multiple Parasitic Patches and Its Array Application With Mutual Coupling Reduction

open access: yesIEEE Access, 2018
A dual-layer patch antenna using multiple parasitic patches for the bandwidth enhancement is presented. Two additional resonances can be obtained with the help of the parasitic patches of the antenna. Consequently, a wide impedance bandwidth of 17% (|S11|
Kai Da Xu   +3 more
doaj   +1 more source

Multi-Scale Spatio-Temporal Attention Networks for Network-Scale Traffic Learning and Forecasting

open access: yesSensors
Accurate and timely forecasting of traffic on local road networks is crucial for deploying effective dynamic traffic control, advanced route planning, and navigation services.
Cong Wu   +3 more
doaj   +1 more source

Energy-Efficient Device-to-Device Communications for Green Internet of Things Using Unmanned Aerial Vehicle-Mounted Intelligent Reflecting Surface

open access: yesDrones
The Internet of Things (IoT) serves as a crucial element in interconnecting diverse devices within the realm of smart technology. However, the energy consumption of IoT technology has become a notable challenge and an area of interest for researchers ...
Fangqing Tan   +4 more
doaj   +1 more source

Energy-efficient access point clustering and power allocation in cell-free massive MIMO networks: a hierarchical deep reinforcement learning approach

open access: yesEURASIP Journal on Advances in Signal Processing
Cell-free massive multiple-input multiple-output (CF-mMIMO) has attracted considerable attention due to its potential for delivering high data rates and energy efficiency (EE). In this paper, we investigate the resource allocation of downlink in CF-mMIMO
Fangqing Tan, Quanxuan Deng, Qiang Liu
doaj   +1 more source

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