Results 21 to 30 of about 716,699 (142)
A Study on Automatically Target-Chasing Microwave Power Transfer Systems in Multipath Environments
Energies, 2022 In this paper, we propose novel retrodirective systems to improve the efficiency and safety of microwave power transmission (MPT) systems in multipath environments.
Naoki Shinohara, Taichi Sasaki
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Development in ambient backscatter communications
IET Microwaves, Antennas &Propagation, Volume 17, Issue 13, Page 963-973, October 2023., 2023 In this paper, we conduct an up‐to‐date review of one branch of BackCom systems, namely Ambient BackCom, which utilises the already available ambient signals, instead of a dedicated radio frequency (RF) carrier in most of the BackCom works, to establish BackCom links.
Shujuan Chang, Yuan Ding
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The EUV Reflectance of Mercury's Surface Measured by BepiColombo/PHEBUS
Journal of Geophysical Research: Planets, Volume 128, Issue 3, March 2023., 2023 Abstract On 9 and 10 October 2021, Probing the Hermean Exosphere by Ultraviolet Spectroscopy aboard BepiColombo observed the disk‐integrated reflected light from the Sun by Mercury in the spectral range 90–160 nm at a phase angle of 70°. These observations are used to derive the EUV reflectance of the surface of Mercury in this wavelength range for the
J.‐Y. Chaufray +12 more
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Retrodirective Antenna for Inter-Satellite Data Transmission
IEEE Access, 2020 A new X-band retrodirective antenna based on superheterodyne mixer and phase conjugating technology is proposed for inter-satellite data transmission in this paper.
Xiaoli Wei, Lianxing He, Lei Chen
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Analysis of outboard cross‐eye jamming using an unmanned platform
IET Signal Processing, Volume 17, Issue 2, February 2023., 2023 This study establishes the theoretical mathematical framework to illustrate the positive effects of outboard configuration on the jamming effect and proves the feasibility of using an unmanned platform to implement outboard cross‐eye jamming. Abstract To address the problem and reduce the risk wherein a ship‐based cross‐eye jammer could set a protected
Zhaodong Wu, Shengliang Hu, Yasong Luo
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Synthesis‐free backscatter directional modulation communication using Van‐Atta arrays
IET Microwaves, Antennas &Propagation, Volume 16, Issue 10, Page 654-659, August 2022., 2022 Abstract Backscatter communication, an emerging ultra‐low‐power wireless communication paradigm, has been studied as a promising solution for wireless communications in some Internet‐of‐Things (IoT) applications. The required ubiquitous data transmission in the IoT world is demanding information security.
Gaojian Huang +4 more
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A model for non‐ideal retrodirective channels in non‐line‐of‐sight geometry
Electronics Letters, Volume 58, Issue 10, Page 382-384, May 2022., 2022 Abstract Backscatter radio communication typically has less reliability than conventional radio links, hindering adaptation. Retrodirective arrays have been shown to enhance the link with gain and a recently‐observed resistance to small‐scale fading. However, the statistical advantages of retrodirective backscatter channels have only been theoretically
Mohammad Alhassoun
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A short‐time range‐angle‐decoupled beam pattern synthesis for frequency diverse arrays
IET Microwaves, Antennas &Propagation, Volume 15, Issue 8, Page 855-870, 1 July 2021., 2021 Abstract Frequency diverse array (FDA), by virtue of its range‐angle‐dependent beam pattern, has drawn a substantial attention in recent years. However, as far as the time‐variant range‐angle‐coupled beam pattern is concerned, such inherent flaw has become a bottleneck of its further development.
Can Cui +4 more
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International Journal of Antennas and Propagation, Volume 2021, Issue 1, 2021., 2021 This paper presents a compact, dual polarized bistatic (two closely spaced transmit and receive radiators) patch antenna with excellent interport isolation performance. The presented antenna system employs differential receive mode operation for the cancellation of self‐interference (SI) to achieve very high interport isolation for 2.4 GHz in‐band full
Haq Nawaz +4 more
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Scatterers in the Rx Near Field for RF Energy Harvesting Efficiency Enhancement
Energies, 2022 In this paper, we investigate the enhancement of RF–RF energy harvesting efficiency (erf–rf) in multipath environments in the context of wireless power transfer (WPT).
Zahra Katbay +2 more
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