O. Tekkouk , K. Kemih , M. Benslama , H. Baudrand , Adaptation by Schottky Contact Coupled Lines for Planar Antennas on Photonic Bandgap, International Journal of Electrical and Power Engineering, Volume 1,Issue 2, 2007, Pages 165-168, ISSN 1990-7958, ijepe.2007.165.168, (https://makhillpublications.co/view-article.php?doi=ijepe.2007.165.168) Abstract: The antennas manufactured on photonic crystal used as substrate, are multi-bands and are by consequent not adapted always well to the lines which feed them. It is often necessary to resort to geometrical modifications on the drivers to cure with the problem of the loss of adaptability line-antenna. We propose a device of adaptation by Schottky contact coupled lines on semiconductor which makes it possible to modify the parameters of the feeders of antenna by the means of the tension. Keywords: Adaptation;photonic crystal;Schottky;antenna;multi-bands