Results 21 to 30 of about 1,449,714 (389)

A novel reverse design method of tag antenna based on image analysis

open access: yesJournal of Algorithms & Computational Technology, 2020
Since the working efficiency of the entire radio frequency identification system depends on the performance of the radio frequency identification tag antenna, the research and design of the tag antenna have received attention, especially for radio ...
Zhenlu Liu   +4 more
doaj   +1 more source

Calibration of the Logarithmic-Periodic Dipole Antenna (LPDA) Radio Stations at the Pierre Auger Observatory using an Octocopter [PDF]

open access: yes, 2017
An in-situ calibration of a logarithmic periodic dipole antenna with a frequency coverage of 30 MHz to 80 MHz is performed. Such antennas are part of a radio station system used for detection of cosmic ray induced air showers at the Engineering Radio ...
Aab, A.   +404 more
core   +3 more sources

A Chip Antenna in LTCC for UWB Radios [PDF]

open access: yesIEEE Transactions on Antennas and Propagation, 2008
The correspondence presents a chip antenna for ultrawide- band (UWB) radios. The chip antenna is realized with a simple radiating element and small ground plane in low temperature cofired ceramic (LTCC) technology. The chip antenna has size 17 X 8 X 0.8 mm3 and achieves impedance bandwidth from 3.75 to 10.45 GHz and gain from - 2 to 2.3 dBi over this ...
Sun, Mei, Zhang, Yue Ping
openaire   +3 more sources

A Tutorial on Fluid Antenna System for 6G Networks: Encompassing Communication Theory, Optimization Methods and Hardware Designs [PDF]

open access: yesIEEE Communications Surveys and Tutorials
The advent of the sixth-generation (6G) networks presents another round of revolution for the mobile communication landscape, promising an immersive experience, robust reliability, minimal latency, extreme connectivity, ubiquitous coverage, and ...
W. New   +11 more
semanticscholar   +1 more source

Experimental study of on-body radio channel performance of a compact ultra wideband antenna [PDF]

open access: yes, 2015
In this paper, on-body radio channel performance of a compact ultra wideband (UWB) antenna is investigated for body-centric wireless communications.
Abbasi, Qammer H.   +3 more
core   +1 more source

A Reconfigurable MIMO/UWB MIMO Antenna for Cognitive Radio Applications

open access: yesIEEE Access, 2019
A novel multi-mode frequency reconfigurable MIMO and an ultrawideband (UWB) MIMO antenna design for cognitive radio applications is proposed in this paper.
Xiongwen Zhao, S. Riaz, S. Geng
semanticscholar   +1 more source

Foldable all-textile cavity-backed slot antennas for personal UWB localization [PDF]

open access: yes, 2020
An all-textile multimoded cavity-backed slot antenna has been designed and fabricated for body-worn impulse radio ultra-wideband (IR-UWB) operation in the 3,744-4,742.4 MHz frequency band, thereby covering Channels 2 and 3 of the IEEE 802.15.4a standard.
Lemey, Sam   +4 more
core   +1 more source

Embedding a Rydberg Atom-Based Sensor Into an Antenna for Phase and Amplitude Detection of Radio-Frequency Fields and Modulated Signals

open access: yesIEEE Access, 2019
We demonstrate a Rydberg atom-based sensor embedded in a parallel-plate waveguide (PPWG) for amplitude and phase detection of a radio-frequency (RF) electric field. This embedded atomic sensor is also capable of receiving modulated communications signals.
M. Simons   +4 more
semanticscholar   +1 more source

A Review on Antenna Technologies for Ambient RF Energy Harvesting and Wireless Power Transfer: Designs, Challenges and Applications

open access: yesIEEE Access, 2022
Radio frequency energy harvesting (RFEH) and wireless power transmission (WPT) are two emerging alternative energy technologies that have the potential to offer wireless energy delivery in the future.
Md. Amanath Ullah   +5 more
semanticscholar   +1 more source

CREATION AND APPROBATION OF A LOW-FREQUENCY RADIO ASTRONOMY ANTENNA FOR STUDIES OF OBJECTS OF THE UNIVERSE FROM THE MOON'S FARSIDE [PDF]

open access: yesRadio Physics and Radio Astronomy, 2021
Purpose: Theoretical and experimental studies of the active antenna – an element of the low-frequency radio telescope antenna array for the future observatory on the farside of the Moon.
I. N. Bubnov   +5 more
doaj   +1 more source

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