THz fractal antennas for electrical and optical semiconductor emitters and receptors英文电子书.pdf

phys. stat. sol. (c) (2004) THz fractal antennas for electrical and optical semiconductor emitters and receptors 1 ∗ 1 1 1 2 Cédric Gaubert , Laurent Chusseau , Alain Giani , Daniel Gasquet , Frédéric Garet , 2 2 2 3 Fabien Aquistapace , Lionel Duvillaret , Jean-Louis Coutaz , and Wojciech Knap 1 ◦ Centre d’Électronique et de Microoptoélectronique de Montpellier, UMR n 5507 au CNRS, Université Montpellier II, 34095 Montpellier, France 2 Laboratoire d’Hyperfréquences et Caractérisation, Université de Savoie, 73376 Le Bourget du Lac, France 3 ◦ Groupe d’Étude des Semiconducteurs, UMR n 5650 au CNRS, Université Montpellier II, 34095 Mont- pellier, France Received 2 October 2003, accepted 4 October 2003 Published online 19 February 2004 PACS 07.57.Ty, 42.25.Fx, 78.47.+p, 84.40.Ba THz waves have recently attracted considerable interest mainly because of their various applications. Ef- ficient and compact CW sources are currently under development. Their optimization requires the most efficient coupling of THz radiation from the intrinsic inner semiconductor source to the outside world. In terms of compactness and planarity, this is best achieved using antennas that are fabricated using common processes in semiconductor technology. Although most antennas are narrow band devices, wide bands are