643 research outputs found
Mutual coupling compensation in uniform circular arrays with center element using a coupling matrix based on phase modes
Shanks-transform accelerated PML-based series expansions for the 1-D periodic 3-D Green's functions of multilayered media
A PerfectlyMatched Layer (PML) based formalismis proposed to derive fast converging series expansions for the 1D periodic
3D Green’s functions of layered media. The Shanks transform is applied to accelerate the PML-based series
Ewald-transform accelerated PML-based series expansions for the 1-D periodic 3-D Green's functions of multilayered media
Derivation of fast converging 2-D periodic Green's function series using PML-based eigenmodes
New series expansions for the 3-D Green's function of multilayered media with 1-D periodicity based on perfectly matched layers
2-D direction of arrival estimation combining UCA-RARE and MUSIC for uniform circular arrays subject to mutual coupling
Analytical spherical-mode-based compensation of mutual coupling in uniform circular arrays for direction-of-arrival estimation
Substrate integrated waveguide textile antennas as energy harvesting platforms
Textile multi-antenna systems are key components of smart fabric and interactive textile (SFIT) systems, as they establish reliable and energy-efficient wireless body-centric communication links. In this work, we investigate how their functionality can further be extended by exploiting their surface as an energy harvesting and power management platform. We provide guidelines for selecting an appropriate antenna topology and describe a suitable integration procedure. We demonstrate this approach by integrating two flexible solar cells, a micro-energy cell and a flexible power management system onto a well-chosen wearable substrate integrated waveguide cavity-backed textile slot antenna, without affecting its performance, to enable energy harvesting from solar and artificial light. In addition, the compact and highly-integrated harvesting module provides a terminal for connecting a thermoelectric generator, enabling thermal body energy harvesting. Measurements in a realistic indoor environment have demonstrated that this hybrid energy harvesting approach leverages a more continuous flow of scavenged energy, enabling energy scavenging in most of the indoor and outdoor scenarios
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