185 citations · 1.4k across the 63 of their papers we have counts for
4 papers · 1 filter
Maximum Radiation Efficiency of Arbitrarily-Shaped Implantable Antennas
Jakub Liska, Mingxiang Gao, Lukas Jelinek +3
Performance limitations for implanted antennas, taking radiation efficiency as the metric, are presented. The performance limitations use a convex optimization procedure with the c…
On the applications of mu=-1 metamaterial lenses for magnetic resonance imaging
Manuel J. Freire, Lukas Jelinek, Ricardo Marques
In this work some possible applications of negative permeability magnetic metamaterial lenses for magnetic resonance imaging (MRI) are analyzed. Metamaterials are artificial compos…
Metamaterial radiofrequency lens for magnetic resonance imaging
Manuel J. Freire, Ricardo Marques, Lukas Jelinek +2
The purpose of this work is to test the ability of a new class of passive electromagnetic device to increase the penetration depth of phased arrays of surface coils for magnetic re…
Experimental demonstration of a mu=-1 metamaterial lens for magnetic resonance imaging
Manuel J. Freire, Ricardo Marques, Lukas Jelinek
In this work a mu=-1 metamaterial (MM) lens for magnetic resonance imaging (MRI) is demonstrated. MRI uses surface coils to detect the radiofrequency(RF) energy absorbed and emitte…