Results 11 to 20 of about 5,914 (307)
Channel inversion method for optimum power delivery in RF harvesting backscatter systems
, 2021 This work presents a method for enhanced wireless power transfer using an algorithm to calculate the optimum phases of multiple transmitting antennas in a passive UHF RFID system. The algorithm performs the calculation based on measured backscatter phase
Yang, S, Penty, RV, Crisp, M, Chen, R, ,
core +3 more sources
Power Transport Theorem Based Decoupling Mode Theory for Wave-Port-Fed Transmitting Antennas
, 2021 Employing the work-energy principle based physical interpretation for characteristic mode theories (CMTs), it is exposed that: strictly speaking, the existing CMTs are the modal analysis theories for incident-field-driven scattering objects and lumped ...
Renzun Lian (10267586) +1 more
core +1 more source
Secrecy and BER analysis of antenna sequence spatial modulation: An information theoretic approach
IET Communications, 2022 5G and future generation networks require physical layer security (PLS) to reinforce the security at the higher communication layers. A novel technique of securely transmitting data in a wireless network is presented, by ensuring its security and ...
Joseph A. Obadha +2 more
doaj +1 more source
A survey of mechanical antennas applied for low-frequency transmitting
iScience, 2023 Summary: The mechanical antenna (MA) is a new type of low-frequency (LF) transmitting antenna that generates an alternating electromagnetic (EM) signal through the mechanical movement of electric charges or magnetic dipoles, which is an interdisciplinary
Yong Cui +6 more
doaj +1 more source
The capacity of fading vector Gaussian channels under amplitude constraints on antenna subsets [PDF]
, 2022 Upper bounds on the capacity of vector Gaussian channels affected by fading are derived under peak amplitude constraints at the input. The focus is on constraint regions that can be decomposed in a Cartesian product of sub-regions. This constraint models
Magarini, M +3 more
core +1 more source
Solar-Terrestrial Physics, 2019 When developing the first topside ionosphere sounding stations, the issue was debated concerning the improvement of the electromagnetic compatibility of such devices through the use of chirp signals.
Podlesnyi A.V. +2 more
doaj +1 more source
Comparison of GA and DDE for optimizing coverage in indoor environment [PDF]
, 2015 This paper presents a method for determining the required number and locations of transmitting antennas to optimize wireless propagation coverage in indoor ultra-wideband communication system.
Shu-Han Liao, Chien-Ching Chiu* andMin-Hui Ho +1 more
core +1 more source
Intelligent Surface-Aided Transmitter Architectures for Millimeter-Wave Ultra Massive MIMO Systems
IEEE Open Journal of the Communications Society, 2021 In this article, we study two novel massive multiple-input multiple-output (MIMO) transmitter architectures for millimeter wave (mmWave) communications which comprise few active antennas, each equipped with a dedicated radio frequency (RF) chain, that ...
Vahid Jamali +4 more
doaj +1 more source
The new transmitting antenna for BIRALES
Materials Research Proceedings, 2023 Abstract. In the last decades the increasing Resident Space Objects (RSOs) population is fostering many Space Surveillance and Tracking (SST) initiatives, which are currently based on the use of ground sensors. These can be distinguished in optical, laser and radar and categorized in tracking and survey sensors.
G. Bianchi +9 more
openaire +1 more source
Serial Patch Array Antenna for an FMCW Radar Housed in a White Cane
International Journal of Antennas and Propagation, 2016 The design, realization, and test of the transmitting and receiving antennas for an FMCW radar operating between 24 and 24.25 GHz (ISM band), to be housed in a white cane for improving mobility of visually impaired subjects, have been performed.
Stefano Pisa +2 more
doaj +1 more source