%0 Journal Article %T Q-FACTOR INVESTIGATION OF ANTENNAS OVER METAMATERIALS SUBSTRATES %+ Institut d'Électronique et des Technologies du numéRique (IETR) %+ Institut d'Electronique et de Télécommunications de Rennes (IETR) %A Collardey, Sylvain %A Sharaiha, Ala %A Abdouni, Wafa %A Niamien, Constant %A Tarot, Anne-Claude %Z WOS %< avec comité de lecture %@ 0895-2477 %J Microwave and Optical Technology Letters %I Wiley %V 52 %N 6 %P 1321-1325 %8 2010-06-01 %D 2010 %R 10.1002/mop.25213 %Z Engineering Sciences [physics]/ElectromagnetismJournal articles %X In this article, antennas over metamaterials substrates are investigated with the radiating Q factor determined by using a time-domain method. The main objective is to illustrate the electromagnetic behavior of this kind of complex structure by calculating its energy budget (stored and radiated energies). An example of a patch antenna using such materials is analyzed and experimental results are presented. %G English %L hal-00467807 %U https://hal.science/hal-00467807 %~ SUPELEC %~ UNIV-NANTES %~ UNIV-RENNES1 %~ CNRS %~ INSA-RENNES %~ IETR %~ IETR_SRC %~ UR1-HAL %~ UR1-MATH-STIC %~ UR1-UFR-ISTIC %~ IETR-CUTE %~ IETR-ADH %~ TEST-UNIV-RENNES %~ TEST-UR-CSS %~ UNIV-RENNES %~ INSA-GROUPE %~ UR1-MATH-NUM %~ IETR-STAR %~ NANTES-UNIVERSITE %~ UNIV-NANTES-AV2022