Results 1 to 10 of about 3,808 (118)

Wearable K Band Sensors for Telemonitoring and Telehealth and Telemedicine Systems [PDF]

open access: yesSensors
Novel K band wearable sensors and antennas for Telemonitoring, Telehealth and Telemedicine Systems, Internet of Things (IoT) systems, and communication sensors are discussed in this paper.
Albert Sabban
doaj   +2 more sources

Enhancing Efficiency for Wideband Antennas by Controlling the Parasitic Resonance of the Feed Structure [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2022
Parallel resonance feed structures can be used to implement wideband impedance characteristics. However, at some frequencies, parasitic resonance is generated in the feed structure.
Hyunwoong Shin, Hyeongdong Kim
doaj   +1 more source

Embroidered Textile Antennas: Influence of Moisture in Communication and Sensor Applications

open access: yesSensors, 2021
Moisture causes detuning and increased losses in textile antennas, and it affects resonant and wideband textile antennas differently. In this work, we studied the effect of moisture on a resonant textile planar inverted-F antenna (PIFA) and a wideband ...
Davor Bonefačić, Juraj Bartolić
doaj   +1 more source

Antennas for Licensed Shared Access in 5G Communications with LTE Mid- and High-Band Coverage

open access: yesSensors, 2023
Two novel antennas are presented for mobile devices to enable them to access both licensed shared access (LSA) bands (1452–1492 and 2300–2400 MHz) and all the long-term evolution (LTE) mid (1427–2690 MHz) and high (3400–3800 MHz) bands, together with the
Khaled M. Morshed   +2 more
doaj   +1 more source

Advances in MIMO Antenna Design for 5G: A Comprehensive Review

open access: yesSensors, 2023
Multiple-input multiple-output (MIMO) technology has emerged as a highly promising solution for wireless communication, offering an opportunity to overcome the limitations of traffic capacity in high-speed broadband wireless network access.
Tej Raj   +3 more
doaj   +1 more source

Wideband Multiport Antennas

open access: yesSensors, 2020
In this paper, a wideband four port 2–6 GHz antenna is proposed. One-, two-, and four-port antennas are implemented and characterized between 2 and 6 GHz. The isolation between the ports is improved by connecting and optimizing the ground plane sections.
Mehdi Seyyedesfahlan   +3 more
doaj   +1 more source

A novel method for optimization of flat monopole antennas with the help of a universal definition for geometric shapes

open access: yesSN Applied Sciences, 2023
In this research, a novel method is proposed optimization of flatted ultra-wideband monopole antennas. In this method, the shape of the antennas is described in general terms.
A. Shirpay, E. Zarezadeh
doaj   +1 more source

A Compact Planar Ultra-Wideband Array Antenna

open access: yesInternational Journal of Antennas and Propagation, 2023
Ultra-wideband (UWB) antennas have recently gained prominence in communication, radar technology, and electronic warfare domains. The quick development of these antennas is due to the wide bandwidth requirements of pulse radar, ground penetrating radar ...
Junli Zhu   +3 more
doaj   +1 more source

A single layer wideband Vivaldi antenna with a novel feed structure

open access: yesIET Microwaves, Antennas & Propagation, 2023
An increase of 7 GHz in the industrial, scientific and medical ISM band around 60 GHz has opened it up for many modern wireless applications such as 5G.
Farhan A. Ghaffar   +2 more
doaj   +1 more source

An Ultra-Wideband Vivaldi Antenna System for Long-Distance Electromagnetic Detection

open access: yesApplied Sciences, 2022
Enlarging or reducing the antenna beam width of antennas can improve the positioning capability of detection systems. A miniaturized and easily fabricated ultra-wideband (UWB) antenna system for long-distance electromagnetic detection is proposed in this
Jinjing Ren   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy