Results 11 to 20 of about 300,396 (142)
Ultracompact Retrodirective Antenna Arrays With Superdirective Radiation Patterns [PDF]
IEEE Transactions on Antennas and Propagation, 2016 It is shown that the direction-of-arrival (DoA) information carried by an incident electromagnetic (EM) wave can be encoded into the evanescent near field of an electrically small resonance antenna array with a spatial rate higher than that of the incident field oscillation rate in free space.
Oleksandr Malyuskin, Vincent F. Fusco
openaire +5 more sources
Experimental Study of Electrically Compact Retrodirective Monopole Antenna Arrays [PDF]
IEEE Transactions on Antennas and Propagation, 2017 Auto-pointing and angular super-resolution properties of the radiation patterns generated by an electrically compact retrodirective monopole antenna array are demonstrated experimentally for the first time. The operation of electrically compact (element spacings less than one-fifth of the radiation wavelength) retrodirective antenna arrays that were ...
Oleksandr Malyuskin, Vincent F. Fusco
openaire +4 more sources
A Tri‐Functional Active Reconfigurable Retrodirective Array
IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.This paper presents a broadband active reconfigurable retrodirective array system operating from 6.4 to 11.2 GHz, which integrates a filtering magneto‐electric dipole antenna with inherent out‐of‐band suppression and a function‐switching network to support three modes: absorption, active retrodirective array and active phased array.
Xiang Wang +4 more
wiley +2 more sources
Reconfigurable metasurface array for diverse retrodirective reflections and radar cross section reduction. [PDF]
NanophotonicsAbstract Retroreflectors can scatter the arbitrarily incident wave back to incoming direction, demonstrating great potential in wireless communication. However, there are limitations in adaptive retroreflection and polarization modulation with the existing retroreflectors. In this paper, a novel metasurface array with a reconfigurable transmission line
Wei WY, Shi Y, Meng ZK, Hui R, Wu QW.
europepmc +2 more sources
Validation of a Large Retrodirective CASSIOPeiA Solar Power Satellite Antenna Array
2024 18th European Conference on Antennas and Propagation (EuCAP)The CASSIOPeiA Solar power satellite (SPS) helix antenna array concept has been shown to provide a viable concept with no mechanical rotational joints required between the photovoltaic cells and the antenna. The important feature of the CASSIOPeiA antenna is that it can provide 360 degrees azimuth electronic beam steering, pointing a highly directional
Buchanan, Neil +3 more
openaire +4 more sources
Maxwell Fisheye Lens Based Retrodirective Array. [PDF]
Sci Rep, 2019 A Maxwell fisheye lens using parallel plate index grading is presented in this study to develop a passive retrodirective antenna array. As a proof-of-concept a design frequency of 10 GHz was selected for fabrication and experiment.
Abbasi MAB, Fusco VF.
europepmc +3 more sources
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
wiley +1 more source
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
wiley +1 more source
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
wiley +1 more source
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
wiley +1 more source