Results 1 to 10 of about 1,835 (87)

Active Delay Stabilization of a 440-km Fiber Link in a Wideband Microwave Delay System

open access: yesIEEE Photonics Journal, 2019
In this paper, a wideband microwave delay system with an equivalent 440-km fiber link is presented. The fiber link propagation delay fluctuation, suffering from temperature variation, is detected incorporating with a reference RF signal. With the help of
Hao Zhang   +5 more
doaj   +3 more sources

Monolithically integrated ultra-wideband photonic receiver on thin film lithium niobate [PDF]

open access: yesCommunications Engineering
As the demand for data capacity in wireless networks and mobile communications continues to grow, they are moving toward higher carrier frequencies and wider modulation bandwidths. Unfortunately, electronic device performance degrades in association with
Marco Moller de Freitas   +6 more
doaj   +2 more sources

A highly miniaturized circularly polarized self-duplexing implantable antenna with enhanced performance for wireless capsule endoscopy applications [PDF]

open access: yesScientific Reports
Multiband implantable antennas are crucial components of biomedical implantable devices (BIDs), enabling the establishment of wireless communication links with external base stations.
Syed Misbah Un Noor   +6 more
doaj   +2 more sources

Application of 4.9 GHz Timeslot Flipping Technology Based on Triple-frequency Networking in Xiwan Coal Mine

open access: yesKongzhi Yu Xinxi Jishu, 2022
Unmanned driving & remote driving transportation business in Xiwan Coal Mine requires three-dimensional coverage of wireless network with large bandwidth and low latency in light-load test area, heavy-load test area and whole mining area.
MA Xiaolong, LEI Jian, WANG Xiaoqi
doaj   +5 more sources

Experimental Demonstration of Interference Mitigation Using Ultra-Wideband Spreading

open access: yesIEEE Journal of Microwaves, 2023
Spectrum scarcity for wireless communication and data transfers has prompted interest to analyze interference among wireless links. As more bandwidth is utilized for communication links, there is a growing need to mitigate interference.
Md Rakibur Rahman   +2 more
doaj   +1 more source

Design and Modeling of Ultra-Compact Wideband Implantable Antenna for Wireless ISM Band

open access: yesBioengineering, 2023
This paper proposes a wideband ultra-compact implantable antenna for a wireless body area network (WBAN). The proposed patch antenna works in the industrial, scientific, and medical (ISM) bands.
Ahmed Z. A. Zaki   +6 more
doaj   +1 more source

Multipurpose Laser Instrument for Interplanetary Ranging, Time Transfer, and Wideband Communications

open access: yesPhotonics, 2023
In this paper, we discuss the design and feasibility of a multifunctional laser instrument capable of precision ranging, time transfer, and wideband communications over interplanetary distances throughout our solar system.
John J. Degnan
doaj   +1 more source

Towards Industrial Ultra-Wideband Networks: Experiments for Machine Vibration Monitoring

open access: yesIEEE Access, 2020
We discuss the potential of ultra-wideband (UWB) technology for realizing use cases in industry 4.0 and demonstrate the implementation of an UWB sensor network with off-the-shelf transceivers for machine vibration monitoring. We propose a flexible medium
Jorge F. Schmidt   +2 more
doaj   +1 more source

Empirical Characterization of the Indoor Radio Channel for Array Antenna Systems in the 3 to 4 GHz Frequency Band

open access: yesIEEE Access, 2019
Concerning the design and planning of new radio interfaces for the fifth-generation (5G) systems, this paper presents a useful contribution to the characterization of the wideband indoor radio channel in the 3-4-GHz frequency band. A measurement campaign
Jesus R. Perez   +6 more
doaj   +1 more source

A Novel High-Linearity Microwave Photonic Link Based on the Strategy of Adding a Compensation Path Using a Bidirectional Phase Modulator

open access: yesIEEE Photonics Journal, 2016
A novel phase-modulation direct-demodulation microwave photonic link for improving the spurious-free dynamic range (SFDR) is proposed and experimentally demonstrated.
Tianwei Jiang   +4 more
doaj   +1 more source

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