Wagner, D., Leuterer, F., Kircher, M., Monaco, F., Münich, M., Schubert, M., Stober, J., Zohm, H., Gantenbein, G., Jelonnek, J., Thumm, M., Meier, A., Scherer, T., Strauss, D., Kasparek, W., Lechte, C., Plaum, B., Zach, A., Litvak, A. G., Denisov, G. G., Chirkov, A., Popov, L. G., Nichiporenko, V. O., Myasnikov, V. E., Tai, E. M., Solyanova, E. A., Malygin, S. A., & ASDEX Upgrade Team, Max Planck Institute for Plasma Physics, Max Planck Society (2016). Extension of the Multi-Frequency ECRH System at ASDEX Upgrade. Talk presented at 41st International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2016). Copenhagen. 2016-09-25 - 2016-09-30.