N. Klein

Miniaturized high-temperature superconductor microstrip patch antenna

G. Splitt, M. Peiniger, H. Chaloupka, 1991 .

Frequency stable oscillators based on cryogenic whispering gallery mode resonators

S. Vitusevich, N. Klein, M. Winter, 2001, Fourth International Kharkov Symposium 'Physics and Engineering of Millimeter and Sub-Millimeter Waves'. Symposium Proceedings (Cat. No.01EX429).

Temperature compensated high-Q dielectric resonators for long term stable low phase noise oscillators

N. Klein, I. Ghosh, D. Schemion, 1997, Proceedings of International Frequency Control Symposium.

Microwave surface resistance of epitaxial YBa2Cu3O7 thin films at 18.7 GHz measured by a dielectric resonator technique

U. Poppe, K. Urban, N. Klein, 1992 .

Microwave absorption, surface resistance and magnetization: Comparative studies of YBa2Cu3O7 thin films

N. Klein, H. Piel, M. Hein, 1990 .

Superconductors and cryogenics for future communication systems

Christian Neumann, Matthias Klauda, Helmut Piel, 2000 .